431 results
Search Results
2. Quantitative paper chromatographic estimation of various amino acids; a modification of Fisher's method.
- Author
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OHTSU T and MIZUNO D
- Subjects
- Animals, Amino Acids analysis, Antifibrinolytic Agents, Chromatography, Paper, Mustelidae, Regression Analysis
- Published
- 1952
- Full Text
- View/download PDF
3. Evolutionary characteristics of the mitochondrial NADH dehydrogenase subunit 6 gene in some populations of four sympatric Mustela species (Mustelidae, Mammalia) from central Europe.
- Author
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Tissaoui G, Suchentrunk F, Awadi A, Smith S, Weber A, and Ben Slimen H
- Subjects
- Animals, Bayes Theorem, DNA, Mitochondrial genetics, Europe, Genetics, Population, Haplotypes genetics, Selection, Genetic, Evolution, Molecular, Mustelidae genetics, NADH Dehydrogenase genetics, Phylogeny, Sympatry genetics
- Abstract
Background: Selection on or reticulate evolution of mtDNA is documented in various mammalian taxa and could lead to misleading phylogenetic conclusions if not recognized. We sequenced the MT-ND6 gene of four sympatric Mustelid species of the genus Mustela from some central European populations. We hypothesised positive selection on MT-ND6, given its functional importance and the different body sizes and life histories of the species, even though climatic differences may be unimportant for adaptation in sympatry., Methods and Results: MT-ND6 genes were sequenced in 187 sympatric specimens of weasels, Mustela nivalis, stoats, M. erminea, polecats, M. putorius, and steppe polecats, M. eversmannii, from eastern Austria and of fourteen allopatric polecats from eastern-central Germany. Median joining networks, neighbour joining and maximum likelihood analyses as well as Bayesian inference grouped all species according to earlier published phylogenetic models. However, polecats and steppe polecats, two very closely related species, shared the same two haplotypes. We found only negative selection within the Mustela sequences, including 131 downloaded ones covering thirteen species. Positive selection was observed on three MT-ND6 codons of other mustelid genera retrieved from GenBank., Conclusions: Negative selection for MT-ND6 within the genus Mustela suggests absence of both environmental and species-specific effects of cellular energy metabolism despite large species-specific differences in body size. The presently found shared polymorphism in European polecats and steppe polecats may result from ancestral polymorphism before speciation and historical or recent introgressive hybridization; it may indicate mtDNA capture of steppe polecats by M. putorius in Europe., (© 2024. The Author(s), under exclusive licence to Springer Nature B.V.)
- Published
- 2024
- Full Text
- View/download PDF
4. NEOTROPICAL CARNIVORES: a data set on carnivore distribution in the Neotropics.
- Author
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Nagy-Reis M, Oshima JEF, Kanda CZ, Palmeira FBL, de Melo FR, Morato RG, Bonjorne L, Magioli M, Leuchtenberger C, Rohe F, Lemos FG, Martello F, Alves-Eigenheer M, da Silva RA, Silveira Dos Santos J, Priante CF, Bernardo R, Rogeri P, Assis JC, Gaspar LP, Tonetti VR, Trinca CT, Ribeiro AS, Bocchiglieri A, Hass A, Canteri A, Chiarello AG, Paglia AP, Pereira AA, de Souza AC, Gatica A, Medeiro AZ, Eriksson A, Costa AN, González-Gallina A, Yanosky AA, Jesus de la Cruz A, Bertassoni A, Bager A, Bovo AAA, Cravino Mol A, Bezerra AMR, Percequillo A, Vogliotti A, Costa Lopes AM, Keuroghlian A, Zúñiga Hartley AC, Devlin AL, de Paula A, García-Olaechea A, Sánchez A, Aquino ACMM, Srbek-Araujo AC, Ochoa AC, Tomazzoni AC, Lacerda ACR, Bacellar AEF, Campelo AKN, Herrera Victoria AM, Paschoal AMO, Potrich AP, Gomes APN, Olímpio APM, Cunha Costa AR, Jácomo ATA, Calaça AM, Jesus AS, de Barros Barban A, Feijó A, Pagoto A, Rolim AC, Hermann AP, Souza ASMCE, Chein Alonso A, Monteiro A, Mendonça AF, Luza AL, Moura ALB, da Silva ALF, Lanna AM, Antunes AP, Nunes AV, Dechner A, Carvalho AS, Novaro AJ, Scabin AB, Gatti A, Nobre AB, Montanarin A, Deffaci ÂC, de Albuquerque ACF, Mangione AM, Pinto AMS, Mendes Pontes AR, Bertoldi AT, Calouro AM, Fernandes A, Ferreira AN, Ferreguetti AC, Rosa ALM, Banhos A, Francisco BDSS, Cezila BA, Beisiegel BM, de Thoisy B, Ingberman B, Neves BDS, Pereira-Silva B, Bertagni de Camargo B, Andrade BDS, Santos BS, Leles B, Torres Parahyba Campos BA, Kubiak BB, França BRA, Saranholi BH, Pereira Mendes C, Cantagallo Devids C, Pianca C, Rodrigues C, Islas CA, de Lima CA, de Lima CR, Gestich CC, Tedesco CD, De Angelo C, Fonseca C, Hass C, Peres CA, Kasper CB, Durigan CC, Fragoso CE, Verona CE, Rocha CFD, Salvador CH, Vieira CL, Ruiz CEB, Cheida CC, Sartor CC, Espinosa CDC, Fieker CZ, Braga C, Sánchez-Lalinde C, Machado CIC, Cronemberger C, Luna CL, Del Vechio C, Bernardo CSS, Hurtado CM, Lopes CM, da Rosa CA, Cinta CC, Costa CG, Zárate-Castañeda CP, Novaes CL, Jenkins CN, Seixas CS, Martin C, Zaniratto CP, López-Fuerte CF, da Cunha CJ, De-Carvalho CB, Chávez C, Santos CC, Polli DJ, Buscariol D, Carreira DC, Galiano D, Thornton D, Ferraz DDS, Lamattina D, Moreno DJ, Moreira DO, Farias DA, Barros-Battesti DM, Tavares DC, Costa Braga D, Gaspar DA, Friedeberg D, Astúa D, Silva DA, Viana DC, Lizcano DJ, Varela DM, Loretto D, Gräbin DM, Eaton DP, Machado da Silva D, Dias DM, Camara EMVC, Barbier E, Chávez-González E, Rocha EC, Lima ES, Carrano E, Eizirik E, Nakano-Oliveira E, Rigacci ED, Santos EM, Venticinque EM, Alexandrino ER, Abreu Ribeiro E, Setz E, Rocha ECLD, Carvalho EAR Jr, Rechenberg E, Fraga EDC, Mendonça EN, D'Bastiani E, Isasi-Catalá E, Guijosa-Guadarrama E, Ramalho EE, González E, Hasui É, Saito EN, Fischer E, Aguiar EF, Rocha ES, Martínez Nambo ED, de la Peña-Cuéllar E, Castro ÉP, de Freitas EB, Pedó E, Rocha FL, Girardi F, Pereira FA, Soares FAM, Roque FO, Díaz-Santos FG, Patiu FM, do Nascimento FO, Keesen Ferreira F, Diaz-Santos F, Moreli Fantacini F, Pedrosa F, Pessoa da Silva F, Velez-Garcia F, Gomes FBR, Guedes da Silva F, Michalski F, de Azevedo FC, de Barros FC, Santos FDS, Abra FD, Ramalho FDP, Hatano FM, Anaguano-Yancha F, Gonçalves F, Pedroni F, Passos FC, Jacinavicius FC, Bonfim FCG, Puertas FH, Contreras-Moreno FM, Tortato FR, Santos FM, Chaves FG, Tirelli FP, Vilas Boas FE, Rodrigues FHG, Ubaid FK, Grotta-Neto F, Palomares F, Souza FL, Costa FE, França FGR, Ramírez Pinto F, Aguiar GL, Hofmann GS, Heliodoro G, Duarte GT, Ribeiro de Andrade G, Beca G, Zapata-Ríos G, Giné GAF, Powell GVN, Wilson Fernandes G, Forero-Medina G, Melo GL, Santana GG, Ciocheti G, Alves GB, Souto GHBO, Villarroel GJ, Porfirio GEO, Batista GO, Behling GM, Ayala Crespo GM, Mourão GM, Rezende GZ, Toledo GADC, Herrera HM, Alves Prado H, Bergallo HG, Secco H, Rajão H, Roig HL, Concone HVB, Duarte H, Ermenegildo H, Ferreira Paulino Neto H, Quigley H, Lemos HM, Cabral H, Fernandes-Ferreira H, Del Castillo HF, Ribeiro IK, Coelho IP, Franceschi IC, Melo I, Oliveira-Bevan I, Mourthe I, Bernardi I, de la Torre JA, Marinho-Filho J, Martinez J, Palacios Perez JX, Pérez-Torres J, Bubadué J, Silveira JR, Seibert JB, Oliveira JF, Assis JR, De la Maza J, Hinojosa J, Metzger JP, Thompson JJ, Svenning JC, Gouvea JA, Souza JRD, Pincheira-Ulbrich J, Nodari JZ, Miranda J, Zecchini Gebin JC, Giovanelli JGR, Rossi Junior JL, Pandini Favoretti JP, Villani JP, Just JPG, Souza-Alves JP, Costa JF, Rocha J, Polisar J, Sponchiado J, Cherem JJ, Marinho JR, Ziegler J, Cordeiro J, de Sousa E Silva Júnior J, Rodriguez-Pulido JA, Chaves Dos Santos JC, Dos Reis Júnior JC, Mantovani JE, Moreira Ramírez JF, Sarasola JH, Cartes JL, Duarte JMB, Longo JM, Dantas JO, Venancio JO, de Matos JR, Pires JSR, Hawes JE, Santos JG, Ruiz-Esparza J, Martínez Lanfranco JA, Rudolf JC, Charre-Medellin JF, Zanón-Martínez JI, Peña-Mondragón JL, Campos Krauer JM, Arrabal JP, Beduschi J, Ilha J, Mata JC, Bonanomi J, Jordao J, de Almeida-Rocha JM, Pereira-Ribeiro J, Zanoni JB, Bogoni JA, Chacón Pacheco JJ, Contreras Palma KM, Strier KB, Rodriguez Castro KG, Didier K, Schuchmann KL, Chávez-Congrains K, Burs K, Ferraz KMPMB, Juarez KM, Flesher K, Morais KDR, Lautenschlager L, Grossel LA, Dahmer LC, de Almeida LR, Fornitano L, Barbosa LNB, Bailey LL, Barreto LN, Villalba LM, Magalhães LM, Cullen L Jr, Marques L, Marques Costa L, Silveira L, Moreira LS, Sartorello L, Oliveira LC, Gomes LP, Aguiar LDS, da Silva LH, Mendonça LS, Valenzuela LA, Benavalli L, Dias LCS, Munhoes LP, Catenacci L, Rampim LE, de Paula LM, Nascimento LA, Gonçalves da Silva L, Quintilham L, Ramis Segura L, Perillo LN, Rezende LR, Martínez Retta L, Rojas LNS, Guimarães LN, Araújo L, Zago da Silva L, Querido LCA, Verdade LM, Perera-Romero LE, Carvalho-Leite LJ, Hufnagel L, Rezende Bernardo LR, Oliveira LF, Oliveira Santos LGR, Lyra LH, Borges LHM, Severo MM, Benchimol M, Quatrocchi MG, Martins MZA, Rodrigues M, Penteado MJF, Figuerêdo Duarte Moraes M, Oliveira MA, Lima MGM, Pônzio MDC, Cervini M, da Silva M, Passamani M, Villegas MA, Dos Santos Junior MA, Yamane MH, Jardim MMA, Leite de Oliveira M, Silveira M, Tortato MA, Figueiredo MSL, Vieira MV, Sekiama ML, Andrade da Silva MA, Nuñez MB, Siviero MB, Carrizo MC, Barros MC, Barros MAS, do Rosário MCF, Peñuela Mora MC, Fleytas Jover MDC, Morandi MEF, Huerta ME, Fernandes MEA, Viscarra Siñani ME, Iezzi ME, Ramos Pereira MJ, Gomez Vinassa ML, Lorini ML, Jorge MLSP, Morini MS, Guenther M, Landis MB, Vale MM, Xavier MS, Tavares MS, Kaizer M, Velilla M, Bergel MM, Hartmann MT, Lima da Silva M, Rivero M, Salles Munerato M, Xavier da Silva M, Zanin M, Marques MI, Haberfeld M, Di Bitetti MS, Bowler M, Galliez M, Ortiz-Moreno ML, Buschiazzo M, Montes MA, Alvarez MR, Melo-Dias M, Reis MG, Corrêa MRJ, Tobler MW, Gompper ME, Nunez-Regueiro M, Brandão Vecchi M, Graipel ME, Godoi MN, Moura MO, Konzen MQ, Pardo MV, Beltrão MG, Mongelli M, Almeida MO, Gilmore MP, Schutte M, Faria MB, Luiz MR, de Paula M, Hidalgo-Mihart MG, Perilli MLL, Freitas-Junior MC, da Silva MP, Denkiewicz NM, Torres NM, Olifiers N, De Lima NDS, de Albuquerque NM, Canassa NF, de Almeida Curi NH, Prestes NP, Falconi N, Gurgel-Filho NM, Pasqualotto N, Cáceres NC, Peroni N, de la Sancha NU, Zanella N, Monroy-Vilchis O, Pays O, Arimoro OA, Ribeiro OS, Villalva P, Gonçalves PR, Santos PM, Brennand P, Rocha P, Akkawi P, Cruz P, Ferreira PM, Prist PR, Martin PS, Arroyo-Gerala P, Auricchio P, Hartmann PA, Antas PTZ, Camargo PHSA, Marinho PH, Ruffino PHP, Prado PI, Martins PW, Cordeiro-Estrela P, Luna P, Sarmento P, Faria Peres PH, Galetti PM Jr, de Castilho PV, Renaud PC, Scarascia PO, Cobra PPA, Lombardi PM, Bessa R, Reyna-Hurtado R, de Souza RCC, Hoogesteijn RJ, Alves RSC, Romagna RS, Silva RL, de Oliveira R, Beltrão-Mendes R, Alencar RM, Coutinho R, da Silva RC, Caribé Grando RLSC, Matos RG, Araujo RDS, Pedroso RF, Durães RMN, Ribeiro RLA, Chagas R, Miotto R, Twardowsky Ramalho Bonikowski R, Muylaert RL, Pagotto RV, Hilário RR, Faria RT, Bassini-Silva R, Sampaio R, Sartorello R, Pires RA, Hatakeyama R, Bianchi RC, Buitenwerf R, Wallace R, Paolino RM, Fusco-Costa R, Trovati RG, Tomasi RJ, Espíndola Hack RO, Magalhães RA, Nobrega RAA, Nobre RA, Massara RL, Fróes RM, Araújo RPDC, León Pérez RR, Jorge RSP, de Paula RC, Martins R, da Cunha RGT, Costa R, Alves RRN, Garcia-Anleu R, Santos Almeida RP, Cueva Loachamín RD, Andrade RS, Juárez R, Bordallo SU, Guaragni SA, Carrillo-Percastegui SE, Seber S, Astete S, Hartz SM, Espinosa S, Álvarez Solas S, Ramos Lima S, Silvestre SM, Machado SAS, Keuroghlian-Eaton S, Albanesi S, Costa SA, Bazilio S, Mendes SL, Althoff SL, Pinheiro SD, Napiwoski SJ, Fernández Ramirez S, Talamoni SA, Age SG, Pereira TC, Moreira TC, Trigo TC, Gondim TMDS, Karlovic TC, Cavalcante T, Maccarini T, Rodrigues TF, de Camargo E Timo TP, Monterrubio TC, Piovezan U, Cavarzere V, Towns V, Onofrio VC, Oliveira VB, Araújo VC, Melo VL, Kanaan VT, Iwakami V, Vale V, Picinatto Filho V, Alberici V, Bastazini VAG, Orsini VS, Braz VDS, Rojas Bonzi VB, Guedes Layme VM, Gaboardi VTR, Rocha VJ, Martins WP, Tomas WM, Hannibal W, Dáttilo W, Silva WR, Endo W, Bercê W, Bravata de la Cruz Y, Ribeiro YGG, Galetti M, and Ribeiro MC
- Subjects
- Animals, Ecosystem, Humans, Canidae, Carnivora, Mustelidae, Ursidae
- Abstract
Mammalian carnivores are considered a key group in maintaining ecological health and can indicate potential ecological integrity in landscapes where they occur. Carnivores also hold high conservation value and their habitat requirements can guide management and conservation plans. The order Carnivora has 84 species from 8 families in the Neotropical region: Canidae; Felidae; Mephitidae; Mustelidae; Otariidae; Phocidae; Procyonidae; and Ursidae. Herein, we include published and unpublished data on native terrestrial Neotropical carnivores (Canidae; Felidae; Mephitidae; Mustelidae; Procyonidae; and Ursidae). NEOTROPICAL CARNIVORES is a publicly available data set that includes 99,605 data entries from 35,511 unique georeferenced coordinates. Detection/non-detection and quantitative data were obtained from 1818 to 2018 by researchers, governmental agencies, non-governmental organizations, and private consultants. Data were collected using several methods including camera trapping, museum collections, roadkill, line transect, and opportunistic records. Literature (peer-reviewed and grey literature) from Portuguese, Spanish and English were incorporated in this compilation. Most of the data set consists of detection data entries (n = 79,343; 79.7%) but also includes non-detection data (n = 20,262; 20.3%). Of those, 43.3% also include count data (n = 43,151). The information available in NEOTROPICAL CARNIVORES will contribute to macroecological, ecological, and conservation questions in multiple spatio-temporal perspectives. As carnivores play key roles in trophic interactions, a better understanding of their distribution and habitat requirements are essential to establish conservation management plans and safeguard the future ecological health of Neotropical ecosystems. Our data paper, combined with other large-scale data sets, has great potential to clarify species distribution and related ecological processes within the Neotropics. There are no copyright restrictions and no restriction for using data from this data paper, as long as the data paper is cited as the source of the information used. We also request that users inform us of how they intend to use the data., (© 2020 The Authors. Ecology © 2020 The Ecological Society of America.)
- Published
- 2020
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5. Politics, preparedness, or resources Examining state responsiveness to the COVID-19 pandemic .
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Lucero L, Diaz-Kope L, and Galadima H
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- Humans, Animals, Pandemics, Analysis of Variance, Correlation of Data, Politics, COVID-19 epidemiology, Mustelidae
- Abstract
U.S. states are often the primary decision makers during a public health crisis. The COVID-19 pandemic led to several different reopening processes across states based on their unique characteristics. We analyze whether states' reopening policy decisions were driven by their public health preparedness, resources, COVID-19 impact, or state politics and political culture. To do so, we summarized state characteristics and compared them across three categories of reopening scores in a bivariate analysis using the chi-square or Fisher exact test for the categorical variables and a one-way analysis of variance (ANOVA) for the continuous variables. A cumulative logit model was used to assess the primary research question. A significant factor in a state's reopening decision was the party of the governor, regardless of the party in control of the legislature, state political culture, public health preparedness, cumulative number of deaths per 100,000, and Opportunity Index score.
- Published
- 2023
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6. Badger culling to control bovine TB.
- Author
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Hancox M
- Subjects
- Animals, Cattle, Disease Reservoirs veterinary, Population Control, Cattle Diseases, Mustelidae, Mycobacterium bovis, Tuberculosis, Bovine prevention & control
- Published
- 2022
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7. Badger culling to control bovine TB.
- Author
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Langton TE, Jones MW, and McGill I
- Subjects
- Animals, Cattle, Disease Reservoirs veterinary, Population Control, Cattle Diseases, Mustelidae, Mycobacterium bovis, Tuberculosis, Bovine prevention & control
- Published
- 2022
- Full Text
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8. African climate and geomorphology drive evolution and ghost introgression in sable antelope.
- Author
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Rocha JL, Vaz Pinto P, Siegismund HR, Meyer M, Jansen van Vuuren B, Veríssimo L, Ferrand N, and Godinho R
- Subjects
- Animals, DNA, Mitochondrial genetics, Genetic Variation genetics, Phylogeny, Phylogeography, Antelopes genetics, Mustelidae
- Abstract
The evolutionary history of African ungulates has been explained largely in the light of Pleistocene climatic oscillations and the way these influenced the distribution of vegetation types, leading to range expansions and/or isolation in refugia. In contrast, comparatively fewer studies have addressed the continent's environmental heterogeneity and the role played by its geomorphological barriers. In this study, we performed a range-wide analysis of complete mitogenomes of sable antelope (Hippotragus niger) to explore how these different factors may have contributed as drivers of evolution in southcentral Africa. Our results supported two sympatric and deeply divergent mitochondrial lineages in west Tanzanian sables, which can be explained as the result of introgressive hybridization of a mitochondrial ghost lineage from an archaic, as-yet-undefined, congener. Phylogeographical subdivisions into three main lineages suggest that sable diversification may not have been driven solely by climatic events affecting populations differently across a continental scale. Often in interplay with climate, geomorphological features have also clearly shaped the species' patterns of vicariance, where the East Africa Rift System and the Eastern Arc Mountains acted as geological barriers. Subsequent splits among southern populations may be linked to rearrangements in the Zambezi system, possibly framing the most recent time when the river attained its current drainage profile. This work underlines how the use of comprehensive mitogenomic data sets on a model species with a wide geographical distribution can contribute to a much-enhanced understanding of environmental, geomorphological and evolutionary patterns in Africa throughout the Quaternary., (© 2022 John Wiley & Sons Ltd.)
- Published
- 2022
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9. A recovery network leads to the natural recolonization of an archipelago and a potential trailing edge refuge.
- Author
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Smith MM, Gilbert JH, Olson ER, Scribner KT, Van Deelen TR, Van Stappen JF, Williams BW, Woodford JE, and Pauli JN
- Subjects
- Animals, Forests, Gene Flow, Genotype, Humans, Ecosystem, Mustelidae
- Abstract
Rapid environmental change is reshaping ecosystems and driving species loss globally. Carnivore populations have declined and retracted rapidly and have been the target of numerous translocation projects. Success, however, is complicated when these efforts occur in novel ecosystems. Identifying refuges, locations that are resistant to environmental change, within a translocation framework should improve population recovery and persistence. American martens (Martes americana) are the most frequently translocated carnivore in North America. As elsewhere, martens were extirpated across much of the Great Lakes region by the 1930s and, despite multiple translocations beginning in the 1950s, martens remain of regional conservation concern. Surprisingly, martens were rediscovered in 2014 on the Apostle Islands of Lake Superior after a putative absence of >40 yr. To identify the source of martens to the islands and understand connectivity of the reintroduction network, we collected genetic data on martens from the archipelago and from all regional reintroduction sites. In total, we genotyped 483 individual martens, 43 of which inhabited the Apostle Islands (densities 0.42-1.46 km
-2 ). Coalescent analyses supported the contemporary recolonization of the Apostle Islands with progenitors likely originating from Michigan, which were sourced from Ontario. We also identified movements by a first-order relative between the Apostle Islands and the recovery network. We detected some regional gene flow, but in an unexpected direction: individuals moving from the islands to the mainland. Our findings suggest that the Apostle Islands were naturally recolonized by progeny of translocated individuals and now act as a source back to the reintroduction sites on the mainland. We suggest that the Apostle Islands, given its protection from disturbance, complex forest structure, and reduced carnivore competition, will act as a potential refuge for marten along their trailing range boundary and a central node for regional recovery. Our work reveals that translocations, even those occurring along southern range boundaries, can create recovery networks that function like natural metapopulations. Identifying refuges, locations that are resistant to environmental change, within these recovery networks can further improve species recovery, even within novel environments. Future translocation planning should a priori identify potential refuges and sources to improve short-term recovery and long-term persistence., (© 2021 by the Ecological Society of America.)- Published
- 2021
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10. Test and vaccinate or remove: Methodology and preliminary results from a badger intervention research project.
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Menzies FD, McCormick CM, O'Hagan MJH, Collins SF, McEwan J, McGeown CF, McHugh GE, Hart CD, Stringer LA, Molloy C, Burns G, McBride SJ, Doyle LP, Courcier EA, McBride KR, McNair J, Thompson S, Corbett DM, Harwood RG, and Trimble NA
- Subjects
- Animals, Cattle, Disease Reservoirs, United Kingdom, Vaccination veterinary, Cattle Diseases, Mustelidae, Mycobacterium bovis, Tuberculosis, Bovine prevention & control
- Abstract
Background: In the British Isles, it is generally accepted that the Eurasian badger (Meles meles) plays a role in the maintenance of bovine tuberculosis (bTB) in cattle. Non-selective culling is the main intervention method deployed in controlling bTB in badgers along with smaller scale Bacillus Calmette-Guérin (BCG) vaccination areas. This paper describes the use of selective badger culling combined with vaccination in a research intervention trial., Methods: In Northern Ireland, a 100 km
2 area was subjected to a test and vaccinate or remove (TVR) badger intervention over a 5-year period. Badgers were individually identified and tested on an annual basis. Physical characteristics and clinical samples were obtained from each unique badger capture event., Results: A total of 824 badgers were trapped with 1520 capture/sampling events. There were no cage-related injuries to the majority of badgers (97%). A low level of badger removal was required (4.1%-16.4% annually), while 1412 BCG vaccinations were administered. A statistically significant downward trend in the proportion of test positive badgers was observed., Conclusion: This is the first project to clearly demonstrate the feasibility of cage side testing of badgers. The results provide valuable data on the logistics and resources required to undertake a TVR approach to control Mycobacterium bovis in badgers., (© 2021 British Veterinary Association.)- Published
- 2021
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11. Using fisher-contributed secondary fins to fill critical shark-fisheries data gaps.
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Quinlan JR, O'Leary SJ, Fields AT, Benavides M, Stumpf E, Carcamo R, Cruz J, Lewis D, Wade B, Amato G, Kolokotronis SO, Clementi GM, and Chapman DD
- Subjects
- Animals, Conservation of Natural Resources, Fisheries, Seafood, Mustelidae, Sharks
- Abstract
Developing-world shark fisheries are typically not assessed or actively managed for sustainability; one fundamental obstacle is the lack of species and size-composition catch data. We tested and implemented a new and potentially widely applicable approach for collecting these data: mandatory submission of low-value secondary fins (anal fins) from landed sharks by fishers and use of the fins to reconstruct catch species and size. Visual and low-cost genetic identification were used to determine species composition, and linear regression was applied to total length and anal fin base length for catch-size reconstruction. We tested the feasibility of this approach in Belize, first in a local proof-of-concept study and then scaling it up to the national level for the 2017-2018 shark-fishing season (1,786 fins analyzed). Sixteen species occurred in this fishery. The most common were the Caribbean reef (Carcharhinus perezi), blacktip (C. limbatus), sharpnose (Atlantic [Rhizoprionodon terraenovae] and Caribbean [R. porosus] considered as a group), and bonnethead (Sphyrna cf. tiburo). Sharpnose and bonnethead sharks were landed primarily above size at maturity, whereas Caribbean reef and blacktip sharks were primarily landed below size at maturity. Our approach proved effective in obtaining critical data for managing the shark fishery, and we suggest the tools developed as part of this program could be exported to other nations in this region and applied almost immediately if there were means to communicate with fishers and incentivize them to provide anal fins. Outside the tropical Western Atlantic, we recommend further investigation of the feasibility of sampling of secondary fins, including considerations of time, effort, and cost of species identification from these fins, what secondary fin type to use, and the means with which to communicate with fishers and incentivize participation. This program could be a model for collecting urgently needed data for developing-world shark fisheries globally. Article impact statement: Shark fins collected from fishers yield data critical to shark fisheries management in developing nations., (© 2021 Society for Conservation Biology.)
- Published
- 2021
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12. Evaluating the effectiveness of badger vaccination combined with cattle test-and-removal in managing Bovine Tuberculosis: Insights from a two-host and multi-route transmission model.
- Author
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Chang Y, Widgren S, de Jong MCM, Tratalos JA, More SJ, and Hartemink N
- Subjects
- Animals, Cattle, Ireland, Disease Reservoirs veterinary, Animal Culling, Models, Biological, Tuberculosis, Bovine transmission, Tuberculosis, Bovine prevention & control, Mustelidae microbiology, Vaccination veterinary, Mycobacterium bovis immunology
- Abstract
Bovine tuberculosis (bTB) has a complex infection ecology and is difficult to control in many countries, including Ireland. For many years, the Irish national bTB eradication programme relied on cattle-based control measures, including test-and-removal with related movement restrictions. In the early 2000s, badger culling was added as a part of the control measure in the national programme. As badgers are protected animals under Wildlife Acts, making culling undesirable, this practice is now progressively being replaced by badger vaccination. However, it is unclear whether badger vaccination, in combination with the cattle test-and-removal and movement restriction, is sufficient to eradicate bTB, or whether additional measures will be needed. Assessing the impact of badger vaccination on reducing bTB in cattle is complex due to the involvement of multiple hosts and transmission routes. Key contributors include transmission to and from wildlife (e.g., European badger, Meles meles), the persistence of Mycobacterium bovis in the environment, and - due to imperfect diagnostic tests - the movement of infected cattle and residual infection in the herd. Understanding of relative contribution of these infectious sources is a key knowledge gap. This study aims to assess the impact of badger vaccination, in addition to cattle test-and-removal and movement restriction, on bTB eradication at a regional level and to assess whether additional interventions are needed. Additionally, we investigate the contribution of several transmission mechanisms such as, local cattle, residual infection, badgers and introduced cattle on the transmission of bTB at the level of both the individual and the herd. To achieve this, we developed a metapopulation model that includes each of the above-mentioned transmission mechanisms for the Kilkenny badger vaccination trial area. The model incorporates within-herd transmission for cattle and within-territory transmission for badgers, and also transmission between herds, both via cattle trade movements and via overlapping badger territories. Our results show that cattle-to-cattle transmission contributes most to new cattle infections at the individual animal (cattle) level, while breakdowns at the herd level usually involve multiple routes. Badger vaccination, when combined with cattle test-and-removal programme, may not be sufficient to achieve eradication in this region. We highlight the need for additional interventions that target cattle, badger, and movement to form a comprehensive intervention strategy, including cattle vaccination, improve farm biosecurity, badger vaccination and risk-based trading., Competing Interests: Declaration of Competing Interest The authors declare that they have no known conflict of financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)
- Published
- 2025
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13. Sex‐specific ontogenetic patterns of cranial morphology, theoretical bite force, and underlying jaw musculature in fishers and American martens
- Author
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Chris J. Law
- Subjects
Male ,0301 basic medicine ,Histology ,Ontogeny ,Bite Force ,03 medical and health sciences ,0302 clinical medicine ,Sagittal crest ,Martes americana ,Mustelidae ,Physiological cross-sectional area ,Animals ,Muscle, Skeletal ,Molecular Biology ,Process (anatomy) ,Ecology, Evolution, Behavior and Systematics ,Sex Characteristics ,biology ,Skull ,Feeding Behavior ,Cell Biology ,Anatomy ,biology.organism_classification ,Original Papers ,Sexual dimorphism ,Bite force quotient ,030104 developmental biology ,Jaw ,Female ,Adductor muscles ,030217 neurology & neurosurgery ,Developmental Biology - Abstract
The carnivoran cranium undergoes tremendous growth in size and development of shape to process prey as adults and, importantly, these ontogenetic processes can also differ between the sexes. How these ontogenetic changes in morphology actually relate to the underlying jaw musculature and overall bite performance has rarely been investigated. In this study, I examined sex‐specific ontogenetic changes in cranial morphology, jaw adductor muscles, and theoretical bite force between subadults and adults in the fisher (Pekania pennanti) and American marten (Martes americana). I found evidence that cranial size alone does not completely explain ontogenetic increases in bite forces as found in other mammalian species. Instead, cranial shape development also drives ontogenetic increases in relative bite force by broadening the zygomatic arches and enlargement of the sagittal crest, both of which enable relatively larger jaw adductor muscles to attach. In contrast, examination of sexual dimorphism within each age‐class revealed that cranial shape dimorphism did not translate to dimorphism in either size‐corrected bite forces or size‐corrected physiological cross‐sectional area of the jaw adductor muscles. These results reveal that morphological size and shape variation can have different influences on bite performance depending on the level of intraspecific variation that is examined (i.e. ontogenetic versus sexual dimorphism).
- Published
- 2020
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14. Aging processes in dental thermoplastics - Thermoanalytical investigations and effects on Vickers as well as Martens hardness.
- Author
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Kreitczick J, Schmohl L, Hahnel S, Vejjasilpa K, Schulz-Siegmund M, and Koenig A
- Subjects
- Animals, Materials Testing, Hardness, Polymers chemistry, Polyethylene Glycols chemistry, Ketones chemistry, Ethanol, Lactic Acid, Dental Materials, Surface Properties, Polymethyl Methacrylate chemistry, Mustelidae, Benzophenones
- Abstract
Objective: The influence of various aging protocols, representing and accelerating influences present in the dental context, on possible changes in the microstructure and mechanical properties of thermoplastics was investigated. In order to minimize the complexity of the systems, first pure polymers and then later the equivalent dental polymeric materials were analyzed., Materials and Methods: Pure polymers (Poly(methyl methacrylate) - PMMA, Polyoxymethylene homopolymer - POM-H, Polyether ether ketone - PEEK, Nylon 12 - PA12, Polypropylene - PP) were analyzed before as well as after applying different aging protocols relevant to the oral environment (ethanol, thermocycling, alkaline and acidic setting) by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The thermoanalytical parameters used were glass transition temperature (T
g ), melting peak and crystallization peak temperature (Tpm, Tpc ) and decomposition behavior. In a second step selected commercially available dental products (Telio CAD - PMMAD , Zirlux Acetal - POMD , Juvora Natural Dental Disc - PEEKD ) aged by the protocol that previously showed strong effects were examined and additionally tested for changes in their Vickers and Martens hardness by Mann-Whitney-U test., Results: The combinations of pure polymers and viable aging protocols analyzed within this study were identified via TGA or DSC as PA12 & thermocycling, POM-H & denture cleanser/lactic acid/ethanol, PP & lactic acid. The dental polymeric materials PMMAD and POMD due to aging in lactic acid showed slight but significantly (p < 0.01) reduced Vickers and partly Martens hardness. PEEK showed the greatest material resistance within this study., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)- Published
- 2024
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15. Is badger culling associated with risk compensation behaviour among cattle farmers?
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Brunton L and Enticott G
- Subjects
- Animals, Cattle, United Kingdom, Humans, Risk-Taking, Risk Reduction Behavior, Mustelidae, Farmers psychology, Animal Culling, Tuberculosis, Bovine prevention & control
- Abstract
Background: Risk compensation theory suggests that behaviours are modified in response to interventions that remove risks by substituting them with other risky behaviours to maintain a 'risk equilibrium'. Alternatively, risk reduction interventions may result in spill-over behaviours that seek to minimise risks further. This paper assessed evidence for these behavioural risk responses among farmers in response to badger culling that seeks to remove the risk of bovine tuberculosis in cattle., Methods: Data from the UK's randomised badger culling trial were re-analysed, comparing farmers' cattle movement practices in proactive and reactive culling areas and control areas. Analysis compared cattle movements during and after the trial using zero-inflated negative binomial regression., Results: The analysis found no strong evidence of risk compensation behaviours among farmers who experienced proactive culling. However, strong evidence for a reduction in cattle movements in reactive culling areas was found. The results indicate high levels of inertia within farming systems in relation to cattle purchasing., Limitations: Data do not account for the risk of cattle purchases and reflect previous policy regimens. Evidence from recent badger culling interventions should be analysed., Conclusion: Proactive badger culling was not associated with risk compensation behaviours, while reactive badger culling was associated with decreased risk taking among farmers., (© 2024 The Authors. Veterinary Record published by John Wiley & Sons Ltd on behalf of British Veterinary Association.)
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- 2024
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16. Effect of selective removal of badgers (Meles meles) on ranging behaviour during a ‘Test and Vaccinate or Remove’ intervention in Northern Ireland
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A. W. Gordon, C. F. McGeown, G. E. McHugh, S.F. Collins, Carl McCormick, Kathryn R. McBride, Fraser Menzies, M. J. H. O'Hagan, and N. A. Trimble
- Subjects
Male ,0106 biological sciences ,Veterinary medicine ,Badger ,Animal Culling ,040301 veterinary sciences ,Epidemiology ,animal diseases ,Home range ,Wildlife ,Northern Ireland ,Culling ,Meles ,Northern ireland ,test and vaccinate or remove ,010603 evolutionary biology ,01 natural sciences ,Bovine tuberculosis ,0403 veterinary science ,Homing Behavior ,biology.animal ,Mustelidae ,Animals ,Disease Reservoirs ,Original Paper ,biology ,selective culling ,Vaccination ,04 agricultural and veterinary sciences ,bacterial infections and mycoses ,biology.organism_classification ,Mycobacterium bovis ,Infectious Diseases ,Intervention research ,homeranges ,Cattle ,Female ,Tuberculosis, Bovine ,Badgers - Abstract
The role of the Eurasian badger (Meles meles) as a wildlife host has complicated the management of bovine tuberculosis (bTB) in cattle. Badger ranging behaviour has previously been found to be altered by culling of badgers and has been suggested to increase the transmission of bTB either among badgers or between badgers and cattle. In 2014, a five-year bTB intervention research project in a 100 km2area in Northern Ireland was initiated involving selective removal of dual path platform (DPP) VetTB (immunoassay) test positive badgers and vaccination followed by release of DPP test negative badgers (‘Test and Vaccinate or Remove’). Home range sizes, based on position data obtained from global positioning system collared badgers, were compared between the first year of the project, where no DPP test positive badgers were removed, and follow-up years 2–4 when DPP test positive badgers were removed. A total of 105 individual badgers were followed over 21 200 collar tracking nights. Using multivariable analyses, neither annual nor monthly home ranges differed significantly in size between years, suggesting they were not significantly altered by the bTB intervention that was applied in the study area.
- Published
- 2021
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17. The first report of rabies in stone marten (Martes foina) in Chaharmahal and Bakhtiari Province (Iran).
- Author
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Zamzam SH, Ghorani M, Eslami F, and Mostofi S
- Subjects
- Humans, Animals, Iran epidemiology, Zoonoses, Mustelidae, Rabies epidemiology, Rabies veterinary
- Abstract
Rabies is a prevalent endemic and zoonotic fatal disease, which is normally transmitted to humans by contact (scratches and bites) from infected animals. The present paper deals with the first documented evidence of rabies in the stone marten (Martes foina). Rabies symptoms were observed in a marten in Chaharmahal and Bakhtiari province. The animal with a strange demeanour approached people without fear, which was died after some while. Samples were taken from its brain (cerebellum, hippocampus, and hypothalamus), shortly after death. In this report, laboratory evidence of rabies by fluorescent antibody (FAT) was proved. The present work is valuable because of the environmental importance of the stone marten. Hence, sensitive surveillance and advanced reporting systems should be regularly monitored on suspected cases of rabies in animals and humans to control and prevent this deadly disease. This involves exposure history, clinical examinations, symptoms and experimental results. Rabies can be controlled by fast diagnostic tests and vaccination., (© 2023 The Authors. Veterinary Medicine and Science published by John Wiley & Sons Ltd.)
- Published
- 2024
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18. First report of Thelazia callipaeda Railliet & Henry, 1910 in a zoo lion (Panthera leo) (Linnaeus, 1758) from Romania.
- Author
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Deak G, Ionică AM, and Mihalca AD
- Subjects
- Female, Animals, Male, Humans, Swine, Dogs, Romania epidemiology, Eye, Lions, Spirurida Infections epidemiology, Spirurida Infections veterinary, Spirurida Infections parasitology, Mustelidae, Thelazioidea, Canidae, Lagomorpha, Dog Diseases parasitology, Swine Diseases
- Abstract
Thelazia callipaeda, the zoonotic "oriental eye worm", is an emerging nematode known to infect a wide range of hosts, particularly carnivores (wild and domestic canids and felids, mustelids, and ursids), but also other mammal groups (suids, lagomorphs, monkeys, and humans), across a wide geographical area. New host-parasite associations and human cases have mostly been reported in endemic areas. A less studied group of hosts is represented by zoo animals that may harbor T. callipaeda.A 23-year old male lion (Panthera leo) that was born in a public zoo in Reșița (Caraș-Severin County, Romania) was submitted to the University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca for investigations after death from unknown reasons in November 2022. Four nematodes were collected from the right eye during the necropsy and submitted to morphological and molecular characterization.Collected nematodes were morphologically identified as three females and one male T. callipaeda. The BLAST analysis revealed 100% nucleotide identity to numerous isolates of T. callipaeda haplotype 1.The present paper presents a new host-parasite association between T. callipaeda and P. leo from a zoo in Romania., (© 2023. The Author(s), under exclusive licence to Springer Nature B.V.)
- Published
- 2023
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19. Development of a quantitative real-time RT-PCR assay for detecting Taiwan ferret badger rabies virus in ear tissue of ferret badgers and mice
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Chung-Hsi Chou, Yu-Hua Shih, Chun-Hsien Tseng, Florence Cliquet, Kuo-Jung Tsai, Wen-Jane Tu, Re-Shang Chen, Yi-Ta Lu, Ai-Ping Hsu, Hsiang-Jung Tsai, Council of Agriculture, National Taiwan University [Taiwan] (NTU), Laboratoire de la rage et de la faune sauvage de Nancy (LRFSN), and Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)
- Subjects
0301 basic medicine ,Badger ,Rabies ,040301 veterinary sciences ,[SDV]Life Sciences [q-bio] ,030106 microbiology ,Taiwan ,real-time RT-PCR ,medicine.disease_cause ,Virus ,0403 veterinary science ,Mice ,03 medical and health sciences ,rabies diagnosis ,Virology ,biology.animal ,Mustelidae ,medicine ,Ferret ,Animals ,Phylogeny ,Taiwan ferret badger rabies ,Mice, Inbred BALB C ,[SDV.BA.MVSA]Life Sciences [q-bio]/Animal biology/Veterinary medicine and animal Health ,Full Paper ,General Veterinary ,biology ,Reverse Transcriptase Polymerase Chain Reaction ,Rabies virus ,Ferrets ,RNA ,04 agricultural and veterinary sciences ,Ferret-badger ,medicine.disease ,biology.organism_classification ,3. Good health ,Reverse transcription polymerase chain reaction ,Real-time polymerase chain reaction ,[SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/Virology ,RNA, Viral - Abstract
International audience; In 2013, the first case of Taiwan ferret badger rabies virus (RABV-TWFB) infection was reported in Formosan ferret badgers, and two genetic groups of the virus were distinguished through phylogenetic analysis. To detect RABV-TWFB using a sensitive nucleic acid-based method, a quantitative real-time reverse transcription polymerase chain reaction targeting the conserved region of both genetic groups of RABV-TWFB was developed. This method had a limit of detection (LOD) of 40 RNA copies/reaction and detected viral RNA in brain and ear tissue specimens of infected and dead Formosan ferret badgers and mice with 100% sensitivity and specificity. The mean viral RNA load detected in the ear tissue specimens of ferret badgers ranged from 3.89 × 108 to 9.73 × 108 RNA copies/g-organ, which was 111-fold to 2,220-fold lower than the concentration detected in the brain specimens, but 2,000-fold to 5,000-fold higher than the LOD of the assay. This highly sensitive technique does not require facilities or instruments complying with strict biosafety criteria. Furthermore, it is efficient, safe, and labor-saving as only ear specimens need be sampled. Therefore, it is a promising technique for epidemiological screening of Taiwan ferret badger rabies.
- Published
- 2018
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20. Quantitative interferon-gamma responses predict future disease progression in badgers naturally infected with Mycobacterium bovis
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S. N. Buzdugan, Julian A. Drewe, Mark A. Chambers, and Richard J. Delahay
- Subjects
Male ,0301 basic medicine ,Badger ,Epidemiology ,030106 microbiology ,Population ,Animals, Wild ,Meles ,Serology ,03 medical and health sciences ,Immune system ,Predictive Value of Tests ,biology.animal ,Mustelidae ,medicine ,Animals ,Tuberculosis ,Interferon gamma ,education ,education.field_of_study ,Mycobacterium bovis ,biology ,biology.organism_classification ,Original Papers ,United Kingdom ,Vaccination ,030104 developmental biology ,Infectious Diseases ,Immunology ,Disease Progression ,Female ,Interferon-gamma Release Tests ,medicine.drug - Abstract
SUMMARYThe diagnosis and control of Mycobacterium bovis infection (bovine tuberculosis: TB) continues to present huge challenges to the British cattle industry. A clearer understanding of the magnitude and duration of immune response to M. bovis infection in the European badger (Meles meles) – a wildlife maintenance host – may assist with the future development of diagnostic tests, and vaccination and disease management strategies. Here, we analyse 5280 diagnostic test results from 550 live wild badgers from a naturally-infected population to investigate whether one diagnostic test (a gamma interferon release [IFNγ] assay, n = 550 tests) could be used to predict future positive results on two other tests for the same disease (a serological test [n = 2342 tests] and mycobacterial culture [n = 2388 tests]) and hence act as an indicator of likely bacterial excretion or disease progression. Badgers with the highest IFNγ optical density (OD) values were most likely to subsequently test positive on both serological and culture tests, and this effect was detectable for up to 24 months after the IFNγ test. Furthermore, the higher the original IFNγ OD value, the greater the chance that a badger would subsequently test positive using serology. Relationships between IFNγ titres and mycobacterial culture results from different types of clinical sample suggest that the route of infection may affect the magnitude of immune response in badgers. These findings identify further value in the IFNγ test as a useful research tool, as it may help us to target studies at animals and groups that are most likely to succumb to more progressive disease.
- Published
- 2017
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21. Northern Ireland farm-level management factors for prolonged bovine tuberculosis herd breakdowns
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Doyle, L P, Courcier, E A, Gordon, A W, O'Hagan, M J H, Johnston, P, McAleese, E, Buchanan, J R, Stegeman, J A, Menzies, F D, Sub Algemeen Marine & Atmospheric Res, FAH veterinaire epidemiologie, dFAH I&I, dFAH AVR, Sub Algemeen Marine & Atmospheric Res, FAH veterinaire epidemiologie, dFAH I&I, and dFAH AVR
- Subjects
Veterinary medicine ,medicine.medical_specialty ,Farms ,040301 veterinary sciences ,animal diseases ,case-control study ,Northern ireland ,Bovine tuberculosis ,0403 veterinary science ,Farm level ,Risk Factors ,Epidemiology ,medicine ,Mustelidae ,Odds Ratio ,Animals ,Animal Husbandry ,Mycobacterium bovis ,Original Paper ,biology ,0402 animal and dairy science ,04 agricultural and veterinary sciences ,biology.organism_classification ,040201 dairy & animal science ,Infectious Diseases ,cattle ,Case-Control Studies ,Herd ,epidemiology ,Tuberculosis, Bovine ,chronic breakdowns - Abstract
This study determined farm management factors associated with long-duration bovine tuberculosis (bTB) breakdowns disclosed in the period 23 May 2016 to 21 May 2018; a study area not previously subject to investigation in Northern Ireland. A farm-level epidemiological investigation (n = 2935) was completed when one or more Single Intradermal Comparative Cervical Test (SICCT) reactors or when one or more confirmed (positive histological and/or bacteriological result) lesion at routine slaughter were disclosed. A case-control study design was used to construct an explanatory set of management factors associated with long-duration bTB herd breakdowns; with a case (n = 191) defined as an investigation into a breakdown of 365 days or longer. Purchase of infected animal(s) had the strongest association as the most likely source of infection for long-duration bTB herd breakdowns followed by badgers and then cattle-to-cattle contiguous herd spread. However, 73.5% (95% CI 61.1–85.9%) of the herd type contributing to the purchase of infection source were defined as beef fattening herds. This result demonstrates two subpopulations of prolonged bTB breakdowns, the first being beef fattening herds with main source continuous purchase of infected animals and a second group of primary production herds (dairy, beef cows and mixed) with risk from multiple sources.
- Published
- 2020
22. Diagnosis of tuberculosis in groups of badgers: an exploration of the impact of trapping efficiency, infection prevalence and the use of multiple tests
- Author
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Richard J. Delahay, Julian A. Drewe, S. N. Buzdugan, and Mark A. Chambers
- Subjects
Veterinary Medicine ,0106 biological sciences ,medicine.medical_specialty ,Veterinary medicine ,Tuberculosis ,Badger ,040301 veterinary sciences ,Epidemiology ,animal diseases ,Population ,Biology ,Sensitivity and Specificity ,010603 evolutionary biology ,01 natural sciences ,Single test ,0403 veterinary science ,biology.animal ,Mustelidae ,Prevalence ,medicine ,Animals ,education ,Group level ,education.field_of_study ,Mycobacterium bovis ,Diagnostic Tests, Routine ,Infection prevalence ,Mycobacterium tuberculosis ,04 agricultural and veterinary sciences ,bacterial infections and mycoses ,medicine.disease ,biology.organism_classification ,Original Papers ,Infectious Diseases ,England ,Female - Abstract
SUMMARYAccurate detection of infection withMycobacterium bovisin live badgers would enable targeted tuberculosis control. Practical challenges in sampling wild badger populations mean that diagnosis of infection at the group (rather than the individual) level is attractive. We modelled data spanning 7 years containing over 2000 sampling events from a population of wild badgers in southwest England to quantify the ability to correctly identify the infection status of badgers at the group level. We explored the effects of variations in: (1) trapping efficiency; (2) prevalence ofM. bovis; (3) using three diagnostic tests singly and in combination with one another; and (4) the number of badgers required to test positive in order to classify groups as infected. No single test was able to reliably identify infected badger groups if 80% sensitive, at least 94% specific, and able to be performed rapidly in the field.
- Published
- 2016
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23. A General Framework for Neutrality Tests Based on the Site Frequency Spectrum.
- Author
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Ramos-Onsins SE, Marmorini G, Achaz G, and Ferretti L
- Subjects
- Animals, Genetic Drift, Motivation, Sample Size, Biological Evolution, Mustelidae
- Abstract
One of the main necessities for population geneticists is the availability of sensitive statistical tools that enable to accept or reject the standard Wright-Fisher model of neutral evolution. A number of statistical tests have been developed to detect specific deviations from the null frequency spectrum in different directions (e.g., Tajima's D, Fu and Li's F and D tests, Fay and Wu's H). A general framework exists to generate all neutrality tests that are linear functions of the frequency spectrum. In this framework, it is possible to develop a family of optimal tests with almost maximum power against a specific alternative evolutionary scenario. In this paper we provide a thorough discussion of the structure and properties of linear and nonlinear neutrality tests. First, we present the general framework for linear tests and emphasise the importance of the property of scalability with the sample size (that is, the interpretation of the tests should not depend on the sample size), which, if missing, can lead to errors in interpreting the data. After summarising the motivation and structure of linear optimal tests, we present a more general framework for the optimisation of linear tests, leading to a new family of tunable neutrality tests. In a further generalisation, we extend the framework to nonlinear neutrality tests and we derive nonlinear optimal tests for polynomials of any degree in the frequency spectrum.
- Published
- 2023
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24. Effects of weather and social factors on hormone levels in the European badger (Meles meles).
- Author
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Sugianto NA, Newman C, Macdonald DW, and Buesching CD
- Subjects
- Female, Male, Animals, Social Factors, Weather, Seasons, Testosterone, Estrone, Mustelidae anatomy & histology
- Abstract
Animals in the wild continually experience changes in environmental and social conditions, which they respond to with behavioural, physiological and morphological adaptations related to individual phenotypic quality. During unfavourable environmental conditions, reproduction can be traded-off against self-maintenance, mediated through changes in reproductive hormone levels. Using the European badger (Meles meles) as a model species, we examine how testosterone in males and oestrogens in females respond to marked deviations in weather from the long-term mean (rainfall and temperature, where badger earthworm food supply is weather dependent), and to social factors (number of adult males and females per social group and total adults in the population), in relation to age, weight and head-body length. Across seasons, testosterone levels correlated postively with body weight and rainfall variability, whereas oestrone correlated positively with population density, but negatively with temperature variability. Restricting analyses to the mating season (spring), heavier males had higher testosterone levels and longer females had higher oestradiol levels. Spring oestrone levels were lower when temperatures were above normal. That we see these effects for this generally adaptive species with a broad bioclimatic niche serves to highlight that climatic effects (especially with the threat of anthropogenic climate change) on reproductive physiology warrant careful attention in a conservation context., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 The Authors. Published by Elsevier GmbH.. All rights reserved.)
- Published
- 2023
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25. Comparative functional anatomy of hindlimb muscles and bones with reference to aquatic adaptation of the sea otter
- Author
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Kent Mori, Daisuke Koyabu, Sung-Yong Han, Hideki Endo, Satoshi Suzuki, and Junpei Kimura
- Subjects
Male ,muscle ,mustelidae ,Mustelidae ,Peroneus muscles ,Wildlife Science ,Otter ,hindlimb ,sea otter ,biology.animal ,medicine ,Animals ,Muscle, Skeletal ,River otter ,geography.river ,geography ,General Veterinary ,biology ,Enhydra lutris ,Full Paper ,Popliteus muscle ,Anatomy ,biology.organism_classification ,Adaptation, Physiological ,medicine.anatomical_structure ,Weasel ,Tensor fasciae latae muscle ,swimming locomotion ,Otters - Abstract
Although the sea otter (Enhydra lutris) is a complete aquatic species, spending its entire life in the ocean, it has been considered morphologically to be a semi-aquatic animal. This study aimed to clarify the unique hindlimb morphology and functional adaptations of E. lutris in comparison to other Mustelidae species. We compared muscle mass and bone measurements of five Mustelidae species: the sea otter, Eurasian river otter (Lutra lutra), American mink (Neovison vison), Japanese weasel (Mustela itatsi) and Siberian weasel (M. sibirica). In comparison with the other 4 species, E. lutris possessed significantly larger gluteus, popliteus and peroneus muscles, but smaller adductor and ischiopubic muscles. The popliteus muscle may act as a medial rotator of the crus, and the peroneus muscle may act as an abductor of the fifth toe and/or the pronator of the foot. The bundles of the gluteus superficialis muscle of E. lutris were fused with those of the tensor fasciae latae muscle and gluteofemoralis muscles, and they may play a role in femur abduction. These results suggest that E. lutris uses the abducted femur, medially rotated crus, eversion of the ankle and abducted fifth digit or extended interdigital web as a powerful propulsion generator. Therefore, we conclude that E. lutris is a complete aquatic animal, possessing differences in the proportions of the hindlimb muscles compared with those in other semi-aquatic and terrestrial mustelids.
- Published
- 2015
26. Neighbouring-group composition and within-group relatedness drive extra-group paternity rate in the European badger (Meles meles)
- Author
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David W. Macdonald, Hannah L. Dugdale, Chris Newman, Yung Wa Sin, Christina D. Buesching, Geetha Annavi, Terry Burke, Weissing group, and Komdeur lab
- Subjects
Male ,Superfecundation ,Heterozygote ,Genotype ,Badger ,Population ,European badger ,inbreeding ,INBREEDING AVOIDANCE ,Biology ,Meles ,PAIR PATERNITY ,SEXUAL SELECTION ,Sexual Behavior, Animal ,extra-pair paternity ,promiscuity ,biology.animal ,Mustelidae ,Animals ,Inbreeding avoidance ,heterozygosity ,mating system ,HIGH-DENSITY POPULATION ,education ,Ecology, Evolution, Behavior and Systematics ,mate incompatibility ,Genetics ,HETEROZYGOSITY-FITNESS CORRELATIONS ,education.field_of_study ,group composition ,Reproduction ,SPATIAL-ORGANIZATION ,MULTILOCUS HETEROZYGOSITY ,REPRODUCTIVE TACTICS ,Mating system ,biology.organism_classification ,Pedigree ,breeding density ,Genetics, Population ,England ,Sexual selection ,FEMALE MATE CHOICE ,Female ,Inbreeding ,EURASIAN BADGER ,Research Paper ,Demography - Abstract
Extra-group paternity (EGP) occurs commonly among group-living mammals and plays an important role in mating systems and the dynamics of sexual selection; however, socio-ecological and genetic correlates of EGP have been underexplored. We use 23years of demographic and genetic data from a high-density European badger (Meles meles) population, to investigate the relationship between the rate of EGP in litters and mate availability, mate incompatibility and mate quality (heterozygosity). Relatedness between within-group assigned mothers and candidate fathers had a negative quadratic effect on EGP, whereas the number of neighbouring-group candidate fathers had a linear positive effect. We detected no effect of mean or maximum heterozygosity of within-group candidate fathers on EGP. Consequently, EGP was associated primarily with mate availability, subject to within-group genetic effects, potentially to mitigate mate incompatibility and inbreeding. In badgers, cryptic female choice, facilitated by superfecundation, superfoetation and delayed implantation, prevents males from monopolizing within-group females. This resonates with a meta-analysis in group-living mammals, which proposed that higher rates of EGP occur when within-group males cannot monopolize within-group females. In contrast to the positive meta-analytic association, however, we found that EGP associated negatively with the number of within-group assigned mothers and the number of within-group candidate fathers; potentially a strategy to counter within-group males committing infanticide. The relationship between the rate of EGP and socio-ecological or genetic factors can therefore be intricate, and the potential for cryptic female choice must be accounted for in comparative studies.
- Published
- 2014
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27. 'Big science' in the field: experimenting with badgers and bovine TB, 1995-2015
- Author
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Angela, Cassidy
- Subjects
Animal Experimentation ,Original Paper ,RCTs ,Ecology ,Animal health ,Science and policy ,Public Policy ,Evidence based policy ,History, 20th Century ,Field science ,History, 21st Century ,Agricultural research ,United Kingdom ,Mustelidae ,Animals ,Cattle ,Population Control ,Tuberculosis, Bovine ,Randomized Controlled Trials as Topic - Abstract
Since wild badgers were first connected with outbreaks of bovine TB (bTB) in UK cattle herds in the early 1970s, the question of whether to cull them to control infections in cattle has been the subject of a protracted public and policy controversy. Following the recommendation of Prof. John Krebs that a "scientifically based experimental trial" be carried out to test the effectiveness of badger culling, the Randomised Badger Culling Trial (RBCT) was commissioned by Government in 1998. One of the largest field experiments ever conducted in the UK, the RBCT sought to recreate the conditions of a randomised controlled trial (RCT) across approximately 3000 km(2) of the South West of England. Despite widespread expectations that the RBCT would provide the necessary evidence to resolve the controversy, its findings have instead been widely contested and reinterpreted, while arguments over badger culling have become increasingly polarised. This paper will investigate the complexities of field experimental knowledge by following the story of the RBCT from this initial proposal, through processes of research design, implementation, analysis, interpretation and reinterpretation of the findings by multiple actors. It asks what kind of experiment the RBCT actually was, and examines how it has contributed to the protracted controversy over whether to cull badgers in order to control bTB in cattle. Finally, it will explore the wider implications of this case for contemporary debates over the contribution that RCTs can make to formulating public policy.
- Published
- 2015
28. Molecular identification of Bartonella spp. and Rickettsia felis in fox fleas, Chile.
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Millán J, Sepúlveda-García P, Di Cataldo S, Canales N, Sallaberry-Pincheira N, Painean J, Cevidanes A, and Müller A
- Subjects
- Dogs, Animals, Foxes, Chile epidemiology, Ferrets genetics, Real-Time Polymerase Chain Reaction veterinary, Siphonaptera microbiology, Bartonella genetics, Rickettsia felis genetics, Dog Diseases microbiology, Flea Infestations epidemiology, Flea Infestations veterinary, Rickettsia genetics, Ctenocephalides genetics, Carnivora, Mustelidae
- Abstract
Seventy-five flea pools (one to ten fleas per pool) from 51 Andean foxes (Lycalopex culpaeus) and five South American grey foxes or chillas (Lycalopex griseus) from the Mediterranean region of Chile were analyzed for the presence of DNA of Bartonella spp. and Rickettsia spp. through quantitative real-time PCR for the nouG and gltA genes, respectively. Positive samples were further characterized by conventional PCR protocols, targeting gltA and ITS genes for Bartonella, and gltA, ompA, and ompB genes for Rickettsia. Bartonella was detected in 48 % of the Pulex irritans pools (B. rochalimae in three pools, B. berkhoffii in two pools, B. henselae in one pool), and 8 % of the Ctenocephalides felis felis pools (B. rochalimae, one pool). Rickettsia was confirmed in 11 % of P. irritans pools and 92 % of the Ct. felis pools. Characterization confirmed R. felis in all sequenced Rickettsia-positive pools. All Ct. canis pools were negative. A Ct. felis pool from a wild-found domestic ferret (Mustela putorius furo) also resulted positive for R. felis. Although opportunistic, this survey provides the first description of zoonotic pathogens naturally circulating in fleas parasitizing Chilean free-living carnivores., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2023
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29. Relationships between soil and badger elemental concentrations across a heterogeneously contaminated landscape.
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Sartorius A, Cahoon M, Corbetta D, Grau-Roma L, Johnson MF, Sandoval Barron E, Smallman-Raynor M, Swift BMC, Yon L, Young S, and Bennett M
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- Humans, Animals, Soil, Cadmium, Ecosystem, Lead, Environmental Monitoring, Mustelidae, Soil Pollutants analysis, Environmental Pollutants, Metals, Heavy analysis
- Abstract
Understanding the links between environmental and wildlife elemental concentrations is key to help assess ecosystem functions and the potential effects of legacy pollutants. In this study, livers from 448 European badgers (Meles meles) collected across the English Midlands were used to investigate the relationship between elemental concentrations in topsoils and wildlife. Mean soil sample concentrations within 2 km of each badger, determined using data from the British Geological Survey's 'Geochemical Baseline Survey of the Environment', were compared to badger liver elemental concentrations, focusing primarily on Ag, As, Cd, Cr, Cu, K, Mn, Pb, Se, Zn. Generally, the badgers appeared to have elemental concentrations comparable with those published for other related animals, though Cu concentrations tended to be lower than expected. While there was no relationship between soil and badger liver concentrations for most biologically essential elements, biologically non-essential elements, specifically Pb, Cd, As, and Ag, were positively correlated between soil and badger livers. Lead and Cd, the elements with the strongest relationships between soils and badger livers, were primarily elevated in badgers collected in Derbyshire, a county with a millennia-long history of Pb mining and significant Pb and Cd soil pollution. Cadmium concentrations in badgers were also, on average, almost nine times higher than the local soil concentrations, likely due to Cd biomagnification in earthworms, a dietary staple of badgers. While badgers are good models for studying associations between soil and wildlife elemental concentrations, due to their diet, burrowing behaviours, and site fidelity, all flora and fauna local to human-modified environments could be exposed to and impacted by legacy pollutants., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 The Authors. Published by Elsevier B.V. All rights reserved.)
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- 2023
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30. The clinical characteristics, etiologic pathogens and the risk factors associated with dehydration status among under-five children hospitalized with acute diarrhea in Savannakhet Province, Lao PDR.
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Vorlasane L, Luu MN, Tiwari R, Imoto A, Sato M, Huy NT, Kamiya Y, and Moji K
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- Humans, Child, Animals, Dehydration complications, Dehydration epidemiology, Laos epidemiology, Retrospective Studies, Risk Factors, Diarrhea complications, Diarrhea epidemiology, Rotavirus, Mustelidae
- Abstract
Background: Acute diarrhea is a common health problem in children, especially those under five years of age (U5). The mortality rate due to acute diarrhea among U5 children accounted for 11% in Lao PDR in 2016. No study has been done to investigate the etiologic pathogens of acute diarrhea and the risk factors associated with dehydration status among U5 children hospitalized with acute diarrhea in this region., Objectives: The study aimed to evaluate the clinical characteristics, etiological agents and associated factors of dehydration status of acute diarrhea among hospitalized U5 children in Savannakhet Province, Lao PDR., Methods: This retrospective study reviewed paper-based medical records with available stool examination results of 33 U5 children hospitalized with acute diarrhea in Savannakhet Provincial Hospital, Lao PDR between Jan. 2018 and Dec. 2019. Descriptive statistics were used to describe clinical characteristics and etiologic agents of acute diarrhea of the children. Nonparametric test, Pearson's Chi-square test and Fisher exact test were used to determine the risk factors associated with level of dehydration of the participants., Results: Vomiting was the most common symptom (66.6%), followed by fever (60.6%). Dehydration was found in 48.4% of subjects. Rotavirus was the most common identified pathogen with a prevalence of 55.5%. Bacterial enteric infection was identified in 15.1% of patients. There is a significantly higher prevalence of dehydration among children with acute diarrhea caused by rotavirus compared to those with negative rotavirus testing (70.0% vs. 12.5%, p = 0.02)., Conclusions: Rotavirus was the most prevalent pathogen of acute diarrhea among U5 children. Pediatric patients with acute diarrhea caused by rotavirus had a higher prevalence of dehydration compared to those with negative rotavirus testing., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2023 Vorlasane et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
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- 2023
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31. Modelling the impact of vaccination on tuberculosis in badgers
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Michael R. Hutchings, Glenn Marion, Joanne L. Hardstaff, Piran C. L. White, and Mark T. Bulling
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Veterinary medicine ,Time Factors ,Tuberculosis ,Badger ,Epidemiology ,animal diseases ,Population ,Wildlife ,Culling ,Meles ,Models, Biological ,biology.animal ,Environmental health ,Mustelidae ,medicine ,Animals ,Computer Simulation ,Disease Eradication ,education ,Disease Reservoirs ,Population Density ,Spatial Analysis ,Mycobacterium bovis ,education.field_of_study ,biology ,Vaccination ,bacterial infections and mycoses ,biology.organism_classification ,medicine.disease ,Original Papers ,United Kingdom ,Infectious Diseases ,Population Control ,Ireland - Abstract
SUMMARYTuberculosis (TB) in livestock, caused by Mycobacterium bovis, persists in many countries. In the UK and Ireland, efforts to control TB through culling of badgers (Meles meles), the principal wildlife host, have failed and there is significant interest in vaccination of badgers as an alternative or complementary strategy. Using a simulation model, we show that where TB is self-contained within the badger population and there are no external sources of infection, limited-duration vaccination at a high level of efficacy can reduce or even eradicate TB from the badger population. However, where sources of external infection persist, benefits in TB reduction in badgers can only be achieved by ongoing, annual vaccination. Vaccination is likely to be most effective as part of an integrated disease management strategy incorporating a number of different approaches across the entire host community.
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- 2013
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32. Long-term temporal trends and estimated transmission rates for Mycobacterium bovis infection in an undisturbed high-density badger (Meles meles) population
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Chris L. Cheeseman, G. S. Smith, D. Wilkinson, Neil J. Walker, Richard S. Clifton-Hadley, Alexandra J. Tomlinson, Mark A. Chambers, and Richard J. Delahay
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Male ,Risk ,Veterinary medicine ,medicine.medical_specialty ,Badger ,Epidemiology ,Population ,Meles ,Serology ,law.invention ,law ,biology.animal ,Mustelidae ,Prevalence ,medicine ,Animals ,Tuberculosis ,education ,Population Density ,Spatial Analysis ,education.field_of_study ,Mycobacterium bovis ,Models, Statistical ,biology ,Incidence ,Incidence (epidemiology) ,biology.organism_classification ,Original Papers ,Infectious Diseases ,Transmission (mechanics) ,England ,Population Surveillance ,Female - Abstract
SUMMARYWe describe epidemiological trends in Mycobacterium bovis infection in an undisturbed wild badger (Meles meles) population. Data were derived from the capture, clinical sampling and serological testing of 1803 badgers over 9945 capture events spanning 24 years. Incidence and prevalence increased over time, exhibiting no simple relationship with host density. Potential explanations are presented for a marked increase in the frequency of positive serological test results. Transmission rates (R0) estimated from empirical data were consistent with modelled estimates and robust to changes in test sensitivity and the spatial extent of the population at risk. The risk of a positive culture or serological test result increased with badger age, and varied seasonally. Evidence consistent with progressive disease was found in cubs. This study demonstrates the value of long-term data and the repeated application of imperfect diagnostic tests as indices of infection to reveal epidemiological trends in M. bovis infection in badgers.
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- 2013
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33. Patterns of direct and indirect contact between cattle and badgers naturally infected with tuberculosis
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Robbie A. McDonald, Nicola Weber, Richard J. Delahay, Julian A. Drewe, and Heather M O’Connor
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Male ,Veterinary medicine ,Badger ,Epidemiology ,animal diseases ,Population ,Mustelidae ,Wildlife ,Meles ,law.invention ,law ,biology.animal ,Animals ,Tuberculosis ,education ,Proportional Hazards Models ,Mycobacterium bovis ,education.field_of_study ,biology ,business.industry ,bacterial infections and mycoses ,biology.organism_classification ,Original Papers ,Infectious Diseases ,Transmission (mechanics) ,England ,Multivariate Analysis ,Cattle ,Female ,Livestock ,Contact Tracing ,business ,Tuberculosis, Bovine - Abstract
SUMMARYTuberculosis (TB) due to infection with Mycobacterium bovis is transmitted between cattle and badgers (Meles meles) in the UK and Ireland but it is unclear where or when transmission occurs. We investigated direct and indirect interactions between badgers and cattle using automated proximity loggers on animals and at badger latrines located on pasture, in an area of south-west England with a high-density badger population. Direct contacts (interactions within 1·4 m) between badgers and cattle at pasture were very rare (four out of >500 000 recorded animal-to-animal contacts) despite ample opportunity for interactions to occur. Indirect interactions (visits to badger latrines by badgers and cattle) were two orders of magnitude more frequent than direct contacts: 400 visits by badgers and 1700 visits by cattle were recorded. This suggests that indirect contacts might be more important than direct contacts in terms of disease transmission at pasture. The TB infection status of individual badgers (ascribed with 93% accuracy using three diagnostic tests) did not affect the frequency or duration of their visits to latrines located on pasture grazed by cattle. Nevertheless, there was wide variation in contact behaviour between individuals, which highlights the importance of understanding heterogeneity in contact patterns when developing strategies to control disease spread in wildlife and livestock.
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- 2013
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34. Heterogeneity in the risk of Mycobacterium bovis infection in European badger (Meles meles) cubs
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Robbie A. McDonald, Richard J. Delahay, Stephen P. Carter, Graham Smith, G. J. Wilson, Alexandra J. Tomlinson, and Mark A. Chambers
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Male ,Risk ,Badger ,Population level ,Epidemiology ,Population ,Zoology ,Enzyme-Linked Immunosorbent Assay ,Meles ,biology.animal ,Mustelidae ,Bovine tuberculosis ,Animals ,Tuberculosis ,education ,Population Density ,Mycobacterium bovis ,education.field_of_study ,biology ,Risk of infection ,fungi ,biology.organism_classification ,Original Papers ,Disease control ,Infectious Disease Transmission, Vertical ,Logistic Models ,Infectious Diseases ,England ,Female ,Interferon-gamma Release Tests - Abstract
SUMMARYThe behaviour of certain infected individuals within socially structured populations can have a disproportionately large effect on the spatio-temporal distribution of infection. Endemic infection with Mycobacterium bovis in European badgers (Meles meles) in Great Britain and Ireland is an important source of bovine tuberculosis in cattle. Here we quantify the risk of infection in badger cubs in a high-density wild badger population, in relation to the infection status of resident adults. Over a 24-year period, we observed variation in the risk of cub infection, with those born into groups with resident infectious breeding females being over four times as likely to be detected excreting M. bovis than cubs from groups where there was no evidence of infection in adults. We discuss how our findings relate to the persistence of infection at both social group and population level, and the potential implications for disease control strategies.
- Published
- 2013
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35. Multi-state modelling reveals sex-dependent transmission, progression and severity of tuberculosis in wild badgers
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J. Graham, Trevor C. Bailey, Graham Smith, David J. Hodgson, Richard J. Delahay, and Robbie A. McDonald
- Subjects
Male ,medicine.medical_specialty ,Badger ,Epidemiology ,Population ,Enzyme-Linked Immunosorbent Assay ,Force of infection ,Disease ,Meles ,Wildlife disease ,Severity of Illness Index ,Sex Factors ,biology.animal ,Mustelidae ,medicine ,Animals ,Tuberculosis ,education ,Disease Reservoirs ,education.field_of_study ,Models, Statistical ,biology ,Transmission (medicine) ,Ecology ,biology.organism_classification ,Mycobacterium bovis ,Survival Analysis ,Original Papers ,United Kingdom ,Infectious Diseases ,Disease Progression ,Cattle ,Female ,Tuberculosis, Bovine ,Demography - Abstract
SUMMARYStatistical models of epidemiology in wildlife populations usually consider diseased individuals as a single class, despite knowledge that infections progress through states of severity. Bovine tuberculosis (bTB) is a serious zoonotic disease threatening the UK livestock industry, but we have limited understanding of key epidemiological processes in its wildlife reservoirs. We estimated differential survival, force of infection and progression in disease states in a population of Eurasian badgers (Meles meles), naturally infected with bTB. Our state-dependent models overturn prevailing categorizations of badger disease states, and find novel evidence for early onset of disease-induced mortality in male but not female badgers. Males also have higher risk of infection and more rapid disease progression which, coupled with state-dependent increases in mortality, could promote sex biases in the risk of transmission to cattle. Our results reveal hidden complexities in wildlife disease epidemiology, with implications for the management of TB and other zoonotic diseases.
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- 2013
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36. Detection and sequence analysis of Canine morbillivirus in multiple species of the Mustelidae family.
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Lanszki Z, Lanszki J, Tóth GE, Cserkész T, Csorba G, Görföl T, Csathó AI, Jakab F, and Kemenesi G
- Subjects
- Animals, Dogs, Animals, Wild, Ferrets, Phylogeny, Sequence Analysis veterinary, Mustelidae, Distemper Virus, Canine genetics, Distemper, Dog Diseases
- Abstract
Background: Canine morbillivirus (canine distemper virus, CDV) is a member of the Paramyxoviridae family. Canine distemper is a serious viral disease that affects many mammalian species, including members of the Mustelidae family. These animals have an elusive nature, which makes related virological studies extremely challenging. There is a significant knowledge gap about the evolution of their viruses and about the possible effects of these viruses to the population dynamics of the host animals. Spleen and lung tissue samples of 170 road-killed mustelids belonging to six species were collected between 1997 and 2022 throughout Hungary and tested for CDV with real-time RT-PCR., Results: Three species were positive for viral RNA, 2 out of 64 Steppe polecats (Mustela eversmanii), 1 out of 36 European polecats (Mustela putorius) and 2 out of 36 stone martens (Martes foina); all 18 pine martens (Martes martes), 10 least weasels (Mustela nivalis) and 6 stoats (Mustela erminea) tested negative. The complete CDV genome was sequenced in five samples using pan-genotype CDV-specific, amplicon-based Nanopore sequencing. Based on the phylogenetic analysis, all five viral sequences were grouped to the Europe/South America 1 lineage and the distribution of one sequence among trees indicated recombination of the Hemagglutinin gene. We verified the recombination with SimPlot analysis., Conclusions: This paper provides the first CDV genome sequences from Steppe polecats and additional complete genomes from European polecats and stone martens. The infected specimens of various species originated from distinct parts of the country over a long time, indicating a wide circulation of CDV among mustelids throughout Hungary. Considering the high virulence of CDV and the presence of the virus in these animals, we highlight the importance of conservation efforts for wild mustelids. In addition, we emphasize the importance of full genomic data acquisition and analysis to better understand the evolution of the virus. Since CDV is prone to recombination, specific genomic segment analyses may provide less representative evolutionary traits than using complete genome sequences., (© 2022. The Author(s).)
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- 2022
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37. A long-term observational study of the impact of badger removal on herd restrictions due to bovine TB in the Irish midlands during 1989–2004
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Simon J. More, J. Condon, I.M. Higgins, John A. Eves, Leonard A. Dolan, and Gabrielle E. Kelly
- Subjects
Veterinary medicine ,medicine.medical_specialty ,Badger ,Epidemiology ,animal diseases ,Culling ,Disease Vectors ,Bovine tuberculosis ,Badger culling ,Observational study ,biology.animal ,Mustelidae ,medicine ,Animals ,Longitudinal Studies ,Disease Reservoirs ,biology ,business.industry ,Incidence ,Incidence (epidemiology) ,Original Papers ,Confidence interval ,Infectious Diseases ,Communicable Disease Control ,Control area ,Herd ,Cattle ,Population Control ,business ,Ireland ,Tuberculosis, Bovine ,Demography - Abstract
SUMMARYAn observational study was carried out, using data collected from four areas in the Irish midlands, between 1989 and 2004, to critically evaluate the long-term effects of proactive badger culling and to provide insights into reactive badger culling tuberculosis (TB) prevalence in cattle. Confirmed cattle herd TB incidence is the outcome measure used throughout. Relative to reactive culling, proactive badger culling was associated with a decrease in incidence in each of the 16 years of observation, which encompassed periods of both intensive and less-intensive badger removal. By 2004, we observed a decrease of 22% [95% confidence interval (CI) 15–29, PPP=0·055). There was a decrease (constant over time) of at least 14% (95% CI 76–97, P=0·013) in incidence in the inner compared to the outer control area (herds ⩽2 km, >2 km, from proactive removal area boundaries, respectively). Incidence in the outer proactive removal area (herds P=0·890). Incidence in the outer control area and total control area, compared to a neighbouring area some distance away, increased over the course of the study. Differences with the total control area were not statistically significant but the outer control area was 11% higher than the neighbouring area by 2004 (borderline significance P=0·057).
- Published
- 2007
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38. Bovine tuberculosis and badgers in Britain: relevance of the past
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Philip A. Robinson and Peter Atkins
- Subjects
Veterinary medicine ,Disease reservoir ,Tuberculosis ,Badger ,Epidemiology ,animal diseases ,Population ,Wildlife ,Mustelidae ,Geographic Mapping ,Meles ,Bovine tuberculosis ,Britain ,biology.animal ,medicine ,Animals ,education ,Socioeconomics ,Wildlife reservoirs ,Disease Reservoirs ,Population Density ,Mycobacterium bovis ,education.field_of_study ,biology ,biology.organism_classification ,medicine.disease ,bacterial infections and mycoses ,Original Papers ,Infectious Diseases ,Geography ,England ,Cattle ,Tuberculosis, Bovine ,Badgers - Abstract
SUMMARYThe European badger (Meles meles) has been identified as a wildlife reservoir of bovine tuberculosis and a source of transmission to cattle in Britain and Ireland. Both behavioural ecology and statistical ecological modelling have indicated the long-term persistence of the disease in some badger communities, and this is postulated to account for the high incidence of bovine tuberculosis in cattle across large tracts of England and Wales. This paper questions this consensus by using historical cartographic evidence to show that tuberculosis in cattle had a very different spatial distribution before 1960 to the present day. Since few of the badgers collected in road traffic accidents between 1972 and 1990 had tuberculosis in counties such as Cheshire, where the disease had until shortly before that been rife in the cattle population, the role of badgers as reservoirs in spreading disease in similar counties outside the south-west of England has to be questioned.
- Published
- 2013
39. Design and development of hybrid optimization enabled deep learning model for COVID-19 detection with comparative analysis with DCNN, BIAT-GRU, XGBoost.
- Author
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Dar JA, Srivastava KK, and Ahmed Lone S
- Subjects
- Humans, Animals, SARS-CoV-2, Cough, Respiratory Sounds, COVID-19 diagnosis, Deep Learning, Mustelidae
- Abstract
The recent investigation has started for evaluating the human respiratory sounds, like voice recorded, cough, and breathing from hospital confirmed Covid-19 tools, which differs from healthy person's sound. The cough-based detection of Covid-19 also considered with non-respiratory and respiratory sounds data related with all declared situations. Covid-19 is respiratory disease, which is usually produced by Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2). However, it is more indispensable to detect the positive cases for reducing further spread of virus, and former treatment of affected patients. With constant rise in the COVID-19 cases, there has been a constant rise in the need of efficient and safe ways to detect an infected individual. With the cases multiplying constantly, the current detecting devices like RT-PCR and fast testing kits have become short in supply. An effectual Covid-19 detection model using devised hybrid Honey Badger Optimization-based Deep Neuro Fuzzy Network (HBO-DNFN) is developed in this paper. Here, the audio signal is considered as input for detecting Covid-19. The gaussian filter is applied to input signal for removing the noises and then feature extraction is performed. The substantial features, like spectral roll-off, spectral bandwidth, Mel frequency cepstral coefficients (MFCC), spectral flatness, zero crossing rate, spectral centroid, mean square energy and spectral contract are extracted for further processing. Finally, DNFN is applied for detecting Covid-19 and the deep leaning model is trained by designed hybrid HBO algorithm. Accordingly, the developed Hybrid HBO method is newly designed by incorporating Honey Badger optimization Algorithm (HBA) and Jaya algorithm. The performance of developed Covid-19 detection model is evaluated using three metrics, like testing accuracy, sensitivity and specificity. The developed Hybrid HBO-based DNFN is outpaced than other existing approaches in terms of testing accuracy, sensitivity and specificity of "0.9176, 0.9218 and 0. 9219". All the test results are validated with the k-fold cross validation method in order to make an assessment of the generalizability of these results. When k-fold value is 9, sensitivity of existing techniques and developed JHBO-based DNFN is 0.8982, 0.8816, 0.8938, and 0.9207. The sensitivity of developed approach is improved by means of gaussian filtering model. The specificity of DCNN is 0.9125, BI-AT-GRU is 0.8926, and XGBoost is 0.9014, while developed JHBO-based DNFN is 0.9219 in k-fold value 9., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022 Elsevier Ltd. All rights reserved.)
- Published
- 2022
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40. Northern Ireland farm-level management factors for recurrent bovine tuberculosis herd breakdowns.
- Author
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Doyle LP, Courcier EA, Gordon AW, O'Hagan MJH, Johnston P, McAleese E, Buchanan JR, Stegeman JA, and Menzies FD
- Subjects
- Animals, Cattle, Farms, Case-Control Studies, Northern Ireland epidemiology, Risk Factors, Tuberculosis, Bovine epidemiology, Tuberculosis, Bovine microbiology, Mycobacterium bovis, Mustelidae microbiology
- Abstract
Bovine tuberculosis (bTB) is a chronic, infectious and zoonotic disease of domestic and wild animals caused mainly by Mycobacterium bovis . This study investigated farm management factors associated with recurrent bTB herd breakdowns ( n = 2935) disclosed in the period 23 May 2016 to 21 May 2018 and is a follow-up to our 2020 paper which looked at long duration bTB herd breakdowns. A case control study design was used to construct an explanatory set of farm-level management factors associated with recurrent bTB herd breakdowns. In Northern Ireland, a Department of Agriculture Environment and Rural Affairs (DAERA) Veterinarian investigates bTB herd breakdowns using standardised guidelines to allocate a disease source. In this study, source was strongly linked to carryover of infection, suggesting that the diagnostic tests had failed to clear herd infection during the breakdown period. Other results from this study associated with recurrent bTB herd breakdowns were herd size and type (dairy herds 43% of cases), with both these variables intrinsically linked. Other associated risk factors were time of application of slurry, badger access to silage clamps, badger setts in the locality, cattle grazing silage fields immediately post-harvest, number of parcels of land the farmer associated with bTB, number of land parcels used for grazing and region of the country.
- Published
- 2022
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41. Weasel exposure to the anticoagulant rodenticide bromadiolone in agrarian landscapes of southwestern Europe.
- Author
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Fernandez-de-Simon J, Díaz-Ruiz F, Jareño D, Domínguez JC, Lima-Barbero JF, de Diego N, Santamaría AE, Herrero-Villar M, Camarero PR, Olea PP, García JT, Mateo R, and Viñuela J
- Subjects
- Animals, Anticoagulants, Arvicolinae, Europe, Rodentia, 4-Hydroxycoumarins, Mustelidae, Rodenticides
- Abstract
Bromadiolone is an anticoagulant rodenticide (AR) commonly used as a plant protection product (PPP) against rodent pests in agricultural lands. ARs can be transferred trophically to predators/scavengers when they consume intoxicated live or dead rodents. ARs exposure in weasels Mustela nivalis, small mustelids specialized on rodent predation, is poorly known in southern Europe. Moreover, in this species there is no information on bioaccumulation of AR diastereomers e.g., cis- and trans-bromadiolone. Trans-bromadiolone is more persistent in the rodent liver and thus, is expected to have a greater probability of trophic transfer to predators. Here, we report on bromadiolone occurrence, total concentrations and diastereomers proportions (trans- and cis-bromadiolone) in weasels from Castilla y León (north-western Spain) collected in 2010-2017, where bromadiolone was irregularly applied to control outbreaks of common voles Microtus arvalis mainly with cereal grain bait distributed by the regional government. We also tested variables possibly associated with bromadiolone occurrence and concentration, such as individual features (e.g., sex), spatio-temporal variables (e.g., year), and exposure risk (e.g., vole outbreaks). Overall bromadiolone occurrence in weasels was 22% (n = 32, arithmetic mean of concentration of bromadiolone positives = 0.072 mg/kg). An individual showed signs of bromadiolone intoxication (i.e., evidence of macroscopic hemorrhages or hyperaemia and hepatic bromadiolone concentration > 0.1 mg/kg). All the exposed weasels (n = 7) showed only trans-bromadiolone diastereomer in liver, whilst a single analyzed bait from those applied in Castilla y León contained trans- and cis-bromadiolone at 65/35%. Bromadiolone occurrence and concentration in weasels varied yearly. Occurrence was higher in 2012 (100% of weasels), when bromadiolone was widely distributed, compared to 2016-2017 (2016: 20%; 2017: 8.33%) when bromadiolone was exceptionally permitted. The highest concentrations happened in 2014 and 2017, both years with vole outbreaks. Our findings indicate that specialist rodent predators could be exposed to bromadiolone in areas and periods with bromadiolone treatments against vole outbreaks., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022 Elsevier B.V. All rights reserved.)
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- 2022
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42. The impact of BCG strains and repeat vaccinations on immunodiagnostic tests in Eurasian badgers (Meles meles).
- Author
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Courcier EA, Collins SF, McCormick CM, Arnold ME, Corbett DM, Ford T, McGeown CF, Barry C, Kirke R, and Menzies FD
- Subjects
- Animals, BCG Vaccine, Cattle, Immunologic Tests, Vaccination veterinary, Mustelidae, Mycobacterium bovis, Tuberculosis, Bovine prevention & control
- Abstract
Bacille Calmette-Guerin (BCG) is a potential tool in the control of Mycobacterium bovis in European badgers (Meles meles). A five year Test and Vaccinate or Remove (TVR) research intervention project commenced in 2014 using two BCG strains (BCG Copenhagen 1331 (Years 1-3/ BadgerBCG) and BCG Sofia SL2222 (Years 4-5). Badgers were recaptured around 9 weeks after the Year 5 vaccination and then again a year later. The Dual-Path Platform (DPP) Vet TB assay was used to detect serological evidence of M. bovis infection. Of the 48 badgers, 47 had increased Line 1 readings (MPB83 antigen) between the Year 5 vaccination and subsequent recapture. The number of BCG Sofia vaccinations influenced whether a badger tested positive to the recapture DPP VetTB assay Line 1 (p < 0.001) while the number of BadgerBCG vaccinations did not significantly affect recapture Line 1 results (p = 0.59). Line 1 relative light units (RLU) were more pronounced in tests run with sera than whole blood. The results from an in_house MPB83 ELISA results indicated that the WB DPP VetTB assay may not detect lower MPB83 IgG levels as well as the serum DPP VetTB assay. Changes in interferon gamma assay (IFN-γ) results were seen in 2019 with significantly increased CFP-10 and PPDB readings. Unlike BadgerBCG, BCG Sofia induces an immune response to MPB83 (the immune dominant antigen in M. bovis badger infection) that then affects the use of immunodiagnostic tests. The use of the DPP VetTB assay in recaptured BCG Sofia vaccinated badgers within the same trapping season is precluded and caution should be used in badgers vaccinated with BCG Sofia in previous years. The results suggest that the DPP VetTB assay can be used with confidence in badgers vaccinated with BadgerBCG as a single or repeated doses., Competing Interests: Declaration of Competing Interest This work was funded by the Department of Agriculture, Environment and Rural Affairs, Northern Ireland (DAERA). The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Crown Copyright © 2022. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2022
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43. CFHBA-PID Algorithm: Dual-Loop PID Balancing Robot Attitude Control Algorithm Based on Complementary Factor and Honey Badger Algorithm.
- Author
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Lin J, Zheng R, Zhang Y, Feng J, Li W, and Luo K
- Subjects
- Algorithms, Animals, Computer Simulation, Honey, Mustelidae, Robotics
- Abstract
The PID control algorithm for balancing robot attitude control suffers from the problem of difficult parameter tuning. Previous studies have proposed using metaheuristic algorithms to tune the PID parameters. However, traditional metaheuristic algorithms are subject to the criticism of premature convergence and the possibility of falling into local optimum solutions. Therefore, the present paper proposes a CFHBA-PID algorithm for balancing robot Dual-loop PID attitude control based on Honey Badger Algorithm (HBA) and CF-ITAE. On the one hand, HBA maintains a sufficiently large population diversity throughout the search process and employs a dynamic search strategy for balanced exploration and exploitation, effectively avoiding the problems of classical intelligent optimization algorithms and serving as a global search. On the other hand, a novel complementary factor (CF) is proposed to complement integrated time absolute error (ITAE) with the overshoot amount, resulting in a new rectification indicator CF-ITAE, which balances the overshoot amount and the response time during parameter tuning. Using balancing robot as the experimental object, HBA-PID is compared with AOA-PID, WOA-PID, and PSO-PID, and the results demonstrate that HBA-PID outperforms the other three algorithms in terms of overshoot amount, stabilization time, ITAE, and convergence speed, proving that the algorithm combining HBA with PID is better than the existing mainstream algorithms. The comparative experiments using CF prove that CFHBA-PID is able to effectively control the overshoot amount in attitude control. In conclusion, the CFHBA-PID algorithm has great control and significant results when applied to the balancing robot.
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- 2022
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44. PCBs, dioxins and furans in Hooded Merganser (Lophodytes cucullatus), Common Merganser (Mergus merganser) and mink (Mustela vison) collected along the St. Maurice River near La Tuque, Quebec
- Author
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Louise Champoux
- Subjects
biology ,Ecology ,business.industry ,Health, Toxicology and Mutagenesis ,Mustelidae ,Zoology ,Paper mill ,General Medicine ,Toxicology ,Anatidae ,biology.organism_classification ,Pollution ,Common merganser ,Geography ,biology.animal ,Bioaccumulation ,Mergus ,Mink ,business - Abstract
A pulp and paper mill located in La Tuque on the St. Maurice River, Quebec, and using the kraft bleaching process was historically the largest pulp and paper industry point source of chlorinated dibenzo-p-dioxins and dibenzofurans in Quebec. A study was undertaken to document the bioaccumulation of PCBs, dioxins and furans in piscivorous birds and mammals in this area. Hooded and Common Merganser eggs were collected in nest boxes along the St. Maurice River and Common Merganser fledglings were collected at two sites on the river. Wild minks were trapped along the St. Maurice River and in a control area upstream. Analysis of pooled merganser eggs showed contamination with dioxins, furans and PCBs. Liver samples of fledglings were contaminated with 2,3,7,8-tetrachlorodibenzofuran at the downstream site. Analysis of mink livers showed a significant higher contamination with dioxins and furans in some downstream samples compared with the upstream samples.
- Published
- 1995
45. Medical Image Classification Utilizing Ensemble Learning and Levy Flight-Based Honey Badger Algorithm on 6G-Enabled Internet of Things.
- Author
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Abd Elaziz M, Mabrouk A, Dahou A, and Chelloug SA
- Subjects
- Algorithms, Animals, Machine Learning, Honey, Internet of Things, Mustelidae
- Abstract
Recently, the 6G-enabled Internet of Medical Things (IoMT) has played a key role in the development of functional health systems due to the massive data generated daily from the hospitals. Therefore, the automatic detection and prediction of future risks such as pneumonia and retinal diseases are still under research and study. However, traditional approaches did not yield good results for accurate diagnosis. In this paper, a robust 6G-enabled IoMT framework is proposed for medical image classification with an ensemble learning (EL)-based model. EL is achieved using MobileNet and DenseNet architecture as a feature extraction backbone. In addition, the developed framework uses a modified honey badger algorithm (HBA) based on Levy flight (LFHBA) as a feature selection method that aims to remove the irrelevant features from those extracted features using the EL model. For evaluation of the performance of the proposed framework, the chest X-ray (CXR) dataset and the optical coherence tomography (OCT) dataset were employed. The accuracy of our technique was 87.10% on the CXR dataset and 94.32% on OCT dataset-both very good results. Compared to other current methods, the proposed method is more accurate and efficient than other well-known and popular algorithms., Competing Interests: The authors declare that there are no conflicts of interest regarding the publication of this paper., (Copyright © 2022 Mohamed Abd Elaziz et al.)
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- 2022
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46. Enhanced Feature Selection Based on Integration Containment Neighborhoods Rough Set Approximations and Binary Honey Badger Optimization.
- Author
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Hosny RA, Abd Elaziz M, and Ali Ibrahim R
- Subjects
- Algorithms, Animals, Honey, Mustelidae
- Abstract
This article appoints a novel model of rough set approximations (RSA), namely, rough set approximation models build on containment neighborhoods RSA (CRSA), that generalize the traditional notions of RSA and obtain valuable consequences by minifying the boundary areas. To justify this extension, it is integrated with the binary version of the honey badger optimization (HBO) algorithm as a feature selection (FS) approach. The main target of using this extension is to assess the quality of selected features. To evaluate the performance of BHBO based on CRSA, a set of ten datasets is used. In addition, the results of BHOB are compared with other well-known FS approaches. The results show the superiority of CRSA over the traditional RS approximations. In addition, they illustrate the high ability of BHBO to improve the classification accuracy overall the compared methods in terms of performance metrics., Competing Interests: The authors declare that there are no conflicts of interest regarding the publication of this paper., (Copyright © 2022 Rodyna A. Hosny et al.)
- Published
- 2022
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47. The prevalence, distribution and severity of detectable pathological lesions in badgers naturally infected with Mycobacterium bovis
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Jenkins, H.E., Morrison, W.I., Cox, D.R., Donnelly, C.A., Johnston, W.T., Bourne, F.J., Clifton-Hadley, R., Gettinby, G., McInerney, J.P., Watkins, G.H., Woodroffe, R., and Department of Environment, Food and Rural Affairs (Defra) (Funder)
- Subjects
Male ,Veterinary medicine ,medicine.medical_specialty ,Badger ,Epidemiology ,animal diseases ,Mycobacterium bovis/isolation & purification ,Culling ,Animal Structures/pathology ,Biology ,Lesion ,biology.animal ,medicine ,Mustelidae ,Prevalence ,Animals ,Tuberculosis ,Respiratory system ,QA ,Mycobacterium bovis ,Transmission (medicine) ,Animal Structures ,biology.organism_classification ,bacterial infections and mycoses ,Original Papers ,QR ,Tuberculosis/transmission ,Infectious Diseases ,medicine.anatomical_structure ,Tuberculosis/pathology ,Tuberculosis/epidemiology ,Mustelidae/microbiology ,Cattle ,Female ,medicine.symptom ,Respiratory tract - Abstract
SUMMARYThe Randomized Badger Culling Trial (RBCT) began in 1998 to determine the impact of badger culling in controlling bovine tuberculosis in cattle. A total of 1166 badgers (14% of total) proactively culled during the RBCT were found to be tuberculous, offering a unique opportunity to study the pathology caused byMycobacterium bovisin a large sample of badgers. Of these, 39% of adults (~6% of all adults culled) had visible lesions (detectable at necropsy) of bovine tuberculosis; cubs had a lower prevalence of infection (9%) but a higher percentage of tuberculous cubs (55·5%) had visible lesions. Only ~1% of adult badgers had extensive, severe pathology. Tuberculous badgers with recorded bite wounds (~5%) had a higher prevalence of visible lesions and a different distribution of lesions, suggesting transmission via bite wounds. However, the predominance of lesions in the respiratory tract indicates that most transmission occurs by the respiratory route.
- Published
- 2007
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48. Characterisation of the Complete Mitochondrial Genome of Critically Endangered Mustela lutreola (Carnivora: Mustelidae) and Its Phylogenetic and Conservation Implications.
- Author
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Skorupski J
- Subjects
- Animals, Mustelidae classification, Nucleic Acid Conformation, Genome, Mitochondrial, Mustelidae genetics, Phylogeny, Polymorphism, Single Nucleotide, RNA, Ribosomal genetics, RNA, Transfer genetics
- Abstract
In this paper, a complete mitochondrial genome of the critically endangered European mink Mustela lutreola L., 1761 is reported. The mitogenome was 16,504 bp in length and encoded the typical 13 protein-coding genes, two ribosomal RNA genes and 22 transfer RNA genes, and harboured a putative control region. The A+T content of the entire genome was 60.06% (A > T > C > G), and the AT-skew and GC-skew were 0.093 and -0.308, respectively. The encoding-strand identity of genes and their order were consistent with a collinear gene order characteristic for vertebrate mitogenomes. The start codons of all protein-coding genes were the typical ATN. In eight cases, they were ended by complete stop codons, while five had incomplete termination codons (TA or T). All tRNAs had a typical cloverleaf secondary structure, except tRNA
Ser(AGC) and tRNALys , which lacked the DHU stem and had reduced DHU loop, respectively. Both rRNAs were capable of folding into complex secondary structures, containing unmatched base pairs. Eighty-one single nucleotide variants (substitutions and indels) were identified. Comparative interspecies analyses confirmed the close phylogenetic relationship of the European mink to the so-called ferret group, clustering the European polecat, the steppe polecat and the black-footed ferret. The obtained results are expected to provide useful molecular data, informing and supporting effective conservation measures to save M. lutreola .- Published
- 2022
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49. Infection dynamics in ecosystems: on the interaction between red and grey squirrels, pox virus, pine martens and trees.
- Author
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Roberts MG and Heesterbeek JAP
- Subjects
- Animals, Environment, Sciuridae, Trees, Ecosystem, Mustelidae
- Abstract
Ecological and epidemiological processes and interactions influence each other, positively and negatively, directly and indirectly. The invasion potential of pathogens is influenced by the ecosystem context of their host species' populations. This extends to the capacity of (multiple) host species to maintain their (common) pathogen and the way pathogen dynamics are influenced by changes in ecosystem composition. This paper exemplifies these interactions and consequences in a study of red and grey squirrel dynamics in the UK. Differences and changes in background habitat and trophic levels above and below the squirrel species lead to different dynamic behaviour in many subtle ways. The range of outcomes of the different interactions shows that one has to be careful when drawing conclusions about the mechanisms and processes involved in explaining observed phenomena concerning pathogens in their natural environment. The dynamic behaviour also shows that planning interventions, for example for conservation purposes, benefits from understanding the complexity of interactions beyond the particular pathogen and its threatened host species.
- Published
- 2021
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50. Potentially toxic element accumulation in badgers (Meles meles): a compositional approach.
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Mullineaux ST, Redpath SHA, Ogle N, McKinley JM, Marks NJ, Scantlebury DM, and Doherty R
- Subjects
- Animals, Northern Ireland, Soil, Metals, Heavy analysis, Mustelidae, Soil Pollutants analysis
- Abstract
Potentially Toxic Elements (PTEs) in Badgers (Meles meles), otherwise known as heavy metals, are unique amongst environmental pollutants occurring, both naturally and anthropogenically. PTEs have a broad range of negative health and environmental effects, therefore identifying their sources and pathways through the environment is imperative for public health policy. This is difficult in terrestrial systems due to the compositional nature of soil geochemistry. In this study, a compositional statistical approach was used to identify how PTEs accumulate in a terrestrial carnivorous mammal, Eurasian Badgers (Meles meles). Compositional principal component analysis (PCA) was used on geochemical data from the Tellus survey, the soil baseline and badger tissue data to map geo-spatial patterns of PTEs and show accumulative trends measured in time. Mapping PCs identified distinct regions of PTE presence in soil and PTE accumulation in badger tissues in Northern Ireland. PTEs were most elevated in liver, kidney and then muscle tissues. Liver and kidney showed the most distinct geo-spatial patterns of accumulation and muscle was the most depleted. PC1 and 2 for each type were modelled using generalised additive mixed models (GAMM) to identify trends through time. PC1 for the liver and muscle were associated with rainfall and ∂N15 in the liver, showing a link to diet and a bioaccumulation pathway, whilst PC2 for both tissues was associated with mean temperature, showing a link to seasonal activity and a bioaccessibility pathway. However, in kidney tissue these trends are reversed and PC1 was associated with bioaccessibility and PC2 with bioaccumulation. Combined these techniques can elucidate both geo-spatial trends in PTEs and the mechanisms by which they move in environment and in future may be an effective tool for assessing PTE bioavailability in environmental health surveys., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2020 Elsevier B.V. All rights reserved.)
- Published
- 2021
- Full Text
- View/download PDF
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