27 results on '"RAMÍREZ-CHAVES, HÉCTOR E."'
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2. Beyond hippos: Evidence of an introduced deer in Colombia.
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Ramírez-Chaves, Héctor E., Roncancio-Duque, Néstor, and Morales-Martínez, Darwin M.
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HIPPOPOTAMUS ,DEER ,INTRODUCED species ,WILD boar ,CERVIDAE ,WHITE-tailed deer ,MAMMALS ,RODENTS ,HERBIVORES - Abstract
Copyright of Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales is the property of Academia Colombiana de Ciencias Exactas, Fisicas y Naturales and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2023
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3. Historical perspective and state of knowledge of the nonavian reptiles (Vertebrata: Sauropsida) of the Department of Caldas, Central Andes of Colombia.
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Rojas-Morales, Julián A., Arias-Monsalve, Héctor F., Caicedo-Martínez, L. Santiago, Henao-Osorio, José J., Cardona-Galvis, Erika Alejandra, and Ramírez-Chaves, Héctor E.
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REPTILES ,BIOLOGICAL specimens ,VERTEBRATES ,REPTILE diversity ,BIODIVERSITY ,PROTECTED areas - Abstract
Copyright of Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales is the property of Academia Colombiana de Ciencias Exactas, Fisicas y Naturales and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2023
- Full Text
- View/download PDF
4. Distribution and noteworthy records of parasitic bugs genus Hesperoctenes (Hemiptera: Polyctenidae) associated with bats (Chiroptera) in Colombia.
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Ospina-Pérez, Erika M., Velásquez-Guarín, Daniela, Mejía-Fontecha, Ingrith Y., Ossa-López, Paula A., Llano Arias, Camilo A., Rivera-Páez, Fredy A., and Ramírez-Chaves, Héctor E.
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CYTOCHROME oxidase ,BATS ,HEMIPTERA - Abstract
The family Polyctenidae (Cimicoidea: Hemiptera) is a group of ectoparasites that has received very little attention from researchers. These bugs are typically associated with bats and are found primarily in tropical and subtropical regions worldwide. Polyctenidae consist of 32 species, which are divided into two subfamilies (Polycteninae and Hesperocteninae) and five genera (Adroctenes , Eoctenes , Hypoctenes, and Polyctenes within Polycteninae and Hesperoctenes within Hesperocteninae). The genus Hesperoctenes comprises 16 species restricted to the Western Hemisphere (South and North America), whereas the other four genera are exclusive to the Old World (Africa, Asia, and Australia), that likely is the diversification center of this group. Besides the wide distribution in the Neotropics there are limited records for all the taxa described, except for Hesperoctenes fumarius and Hesperoctenes cartus. Furthermore, the association with the hosts and the distribution patterns are still unclear. In high diverse countries such as Colombia where more than 217 bat species have been reported, there are only few records of Polyctenids. To contribute to the knowledge of Neotropical Polyctenids, we reviewed the records of Hesperoctenes and the association with mammal hosts in America, and present noteworthy records of Hesperoctenes hermsi , H. fumarius and new associations with bats in Colombia. We identified individuals of both species by morphological comparisons and PCR amplification of a fragment of the mitochondrial gene cytochrome c oxidase subunit I (COI). Due to the few records at the molecular level, the sequence of H. hermsi is the first reported for this species. Our study reports for the first time the presence of H. hermsi in Colombia, since it has only been reported in Brazil, USA, and Venezuela. We also report new associations with the bats Cynomops planirostris and Molossus pretiosus , since it has only been associated with other Molossids such as Molossus molossus , Eumops glacinus , Nyctinomops laticaudatus , and Nyctinomops macrotis. [ABSTRACT FROM AUTHOR]
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- 2023
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5. Interaction Networks between Bats (Mammalia: Chiroptera) and Ectoparasitic Flies (Diptera: Hippoboscoidea) in the Colombian Orinoquia Region.
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Rivera, Camila López, Padilla, Juliana Florez, Ospina Pérez, Erika M., Urbano, Freddy Méndez, Guarín, Daniela Velásquez, Mejía Fontecha, Ingrith Y., Ossa López, Paula A., Rivera Páez, Fredy A., and Ramírez-Chaves, Héctor E.
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BATS ,MAMMALS ,DIPTERA ,BIPARTITE graphs ,HUMAN settlements ,HISTORY associations - Abstract
The study of host-parasite interactions is key to understanding ecological interactions since parasites play a crucial role in the regulation of populations of host species. The families Nycteribiidae and Streblidae (Diptera: Hippoboscoidea) are ectoparasitic flies specific to bats, which have evolved adaptations to their host. The host-parasite interactions are formed by coevolutionary processes and illustrate the current and historical associations between the species involved. For this reason, the use of ecological networks in parasite-host interactions allows us to elucidate how the structure of their interactions respond to biotic and abiotic factors. In the present study, we evaluated changes in the fly-bat interaction networks in two contrasting landscapes in the Department of Arauca of the Colombian Orinoquia Region. The first landscape is composed of savannas and alluvial forests and the second with anthropogenic disturbances composed of cocoa crops, livestock areas and human settlements. We used mist nets to capture bats and collect their respective parasitic flies. Using this data, we built a bipartite interaction network for each landscape, and we calculated the main metrics of each network. 19.8% of the 524 bats captured presented ectoparasitic flies, with a total of 326 flies belonging to nine genera of Streblidae and one genus of Nycteribiidae. The diversity and prevalence of ectoparasitic flies of bats was higher for the disturbed landscape in contrast to savannas and forests. The networks of both landscapes were characterized by being highly specialized and modular. Nonetheless, the network obtained in the savannas and alluvial forests showed greater specialization, and the landscape with anthropogenic impact presented greater modularity. Our results confirm the high specialization and modularity that characterizes the ectoparasitic bat-fly antagonistic network. Also, we provided new observations suggesting that a degraded landscape may affect the bat hosts and favors overcrowding and, consequently, the exchange of ectoparasites between bat species, reducing the level of specialization and promoting the increased prevalence of bat ectoparasitic flies. [ABSTRACT FROM AUTHOR]
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- 2022
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6. Bacterial community of ticks (Acari: Ixodidae) and mammals from Arauca, Colombian Orinoquia.
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Ossa-López, Paula A., Ramírez-Chaves, Héctor E., Álvarez López, María Elena, Castaño Villa, Gabriel Jaime, and Rivera-Páez, Fredy A.
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Ticks are obligate hematophagous ectoparasites of vertebrates and are relevant worldwide due to the number of bacterial and other pathogens they can transmit. To date, the knowledge about the microorganisms that ticks harbor and transmit to their hosts is incipient. In this study, 24 samples of mammals belonging to four taxonomic orders and ticks of the genera Amblyomma and Rhipicephalus from the Orinoco region of Colombia were analyzed to described and compare the bacterial microbiome. Genetic extraction was performed, and the V3–V4 region of the 16S rRNA gene was amplified by PCR. Libraries were created, and those samples with adequate quality indices were sequenced using Illumina MiSeq technology. Bacterial taxonomic assignment analyses were conducted through Amplicon Sequence Variants (ASVs) and Operational Taxonomic Units (OTUs). The results correspond to 16 samples that passed the quality filters, with 3218 OTUs (415 families). Although a considerable number of unknown bacteria was found, Enterobacteriaceae, Beijerinckiaceae, Moraxellaceae, and Burkholderiaceae are the most prevalent families, and the presence of the genera Coxiella , Escherichia-Shigella , Enterobacter , which can harbor pathogenic species was confirmed. In individuals of Amblyomma mixtum found actively feeding on Hydrochoerus hydrochaeris , bacteria of the genera Escherichia-Shigella and Enterobacter were documented. Similarly, Rhipicephalus microplus found actively feeding on Odocoileus virginianus cariacou shared Escherichia-Shigella. Ralstonia was shared among the blood samples of H. hydrochaeris , while Anaplasma and Eubacterium were shared in blood and liver samples of O. v. cariacou. Shared bacteria between A. mixtum and R. microplus included Bacillus , Coxiella , and Escherichia-Shigella. The results highlight the need of additional studies in other natural regions of Colombia and other American countries where tick-borne diseases have been detected. Likewise, the recorded data are the first at the level of bacterial communities in ticks of the family Ixodidae and provide valuable knowledge for the understanding host-tick and pathogen interactions. [Display omitted] • Relative frequency analyses associated artiodactyls with bacteria within Anaplasmataceae, Prevotellaceae, and Mycoplasmaceae. • Didelphimorphia was associated with bacteria within Clostridiaceae, Pseudomonadaceae, Moraxellaceae, and Rhodobacteraceae. • 1) Mycoplasmaceae - Streptococcaceae and 2) Enterococcaceae - Rhizobiaceae were detected in rodents and bats, respectively. • The main family of bacteria detected in ticks using relative frequency analyses was Coxiellaceae. • Enterobacter , Escherichia-Shigella , Ralstonia may include pathogenic species shared between wild and domestic mammals. [ABSTRACT FROM AUTHOR]
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- 2024
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7. The Bat Lands, un proyecto que busca explorar áreas potenciales de brotes zoonóticos mediados por murciélagos.
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Ramírez-Chaves, Héctor E.
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BATS ,SPECIES ,URBANIZATION ,PUBLIC health ,PANDEMICS ,ALGORITHMS - Abstract
Copyright of Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales is the property of Academia Colombiana de Ciencias Exactas, Fisicas y Naturales and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
- Full Text
- View/download PDF
8. Infestation, histology, and molecular confirmation of Sarcoptes scabiei in an Andean porcupine (Coendou quichua) from the Central Andes of Colombia.
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Busi, Ana, Ospina-Pérez, Erika Mayerly, Rodríguez-Hurtado, Caterine, Mejía-Fontecha, Ingrith Y., Ossa-López, Paula A., Rivera-Páez, Fredy A., and Ramírez-Chaves, Héctor E.
- Abstract
Sarcoptic mange is a highly contagious, worldwide disease that affects the skin of mammals, including humans. It is caused by the mite Sarcoptes scabiei , however, the information available in wild mammal populations in the world, and particularly in Colombia is limited. Here, we document a new case of sarcoptic mange in an Andean porcupine (Coendou quichua) from the Andean region of Colombia. We morphologically and molecularly confirmed the mite as S. scabiei and documented the histopathology associated with scabies, and show the different stages of the life cycle of S. scabiei from the Andean porcupine skin samples. Our review of reports of additional cases of scabies in wild mammal species in South America showed 15 species, mostly carnivores, artiodactyls, and rodents. Considering the limited information in Colombia, it is urgent to evaluate the risk of this condition on mammals which would contribute to the epidemiological knowledge and the potential implications of sarcoptic mange in the ecology and conservation of wild mammals in the country. [Display omitted] • Mange in an Andean porcupine. • Cases of sarcoptic mange in South American mammals. • Morphological, histopathologic and genetic data of Sarcoptes scabiei in Colombia. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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9. On the distribution of three exotic geckos of genus Hemidactylus Gray, 1825 (Squamata, Gekkonidae), and an unusual record of the native lizard Gymnophthalmus speciosus (Hallowell, 1861) outside its elevational range in Colombia.
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Henao-Osorio, Jose J., Pereira-Ramírez, Ana M., Cardona-Giraldo, Alexandra, Fabio Arias-Monsalve, Héctor, Rojas-Morales, Julián A., Rancés Caicedo-Portilla, José, and Ramírez-Chaves, Héctor E.
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HEMIDACTYLUS ,GECKOS ,SQUAMATA ,REPTILES ,LIZARDS ,INTRODUCED species - Abstract
Copyright of Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales is the property of Academia Colombiana de Ciencias Exactas, Fisicas y Naturales and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
10. New records of mammals of the Coffee Region, Central Andes of Colombia using citizen science.
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Terán-Sánchez, Sofía, Díaz-Arango, Alejandra, Fabio Arias-Monsalve, Héctor, and Ramírez-Chaves, Héctor E.
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CITIZEN science ,PARK rangers ,NATURAL history museums ,ADULT education workshops ,MAMMALS ,COFFEE - Abstract
The Coffee Region of Colombia is one of the most representative areas of the country due to its cultural appeal. 200 of the 528 mammal species in the country occur in this region. Pre-existing knowledge about the group in this region has been obtained through indirect and direct sampling methods. We present new records of mammals of the "Reserva Forestal Protectora Bosques de la Central Hidroeléctrica de Caldas (CHEC)", located in the Coffee Region, based on vouchered citizen science records. To accomplish this, we held training workshops on the relevance of information provided by non-invasive vouchers for mammal collections that include bone remains, hairs, skin and other signs that can be found incidentally in the field by park rangers and other staff of the Reserve. In addition, we included photographic and video records of mammals taken by park rangers before and after the training workshops. We added vouchers obtained by the park rangers to the biological collection of the Natural History Museum of the Universidad de Caldas (MHN-UCa). Using this method, we obtained records of 34 mammalian species belonging to 20 families and 11 orders. We highlight the obtention of museum preserved vouchers of the Northern Naked-tailed Armadillo, Cabassous centralis (Miller 1899), and the Cauca Slender Opossum, Marmosops caucae (Thomas 1900), that had limited samples in national collections or had not been previously collected in the study area. With this work, a contribution network with the CHEC reserve staff was established, promoting the inclusion of these agents in the development of scientific research, and showing the relevance of collaborative science in assisting with filling information gaps about medium and large mammals. [ABSTRACT FROM AUTHOR]
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- 2021
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11. What's on the menu? A presumed attack of Andean bear on a Mountain tapir at the Puracé National Natural Park, Colombia.
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Adolfo Pisso-Florez, Gustavo, Gómez-Lora, Ignacio, Mauricio Vela-Vargas, I., Pizo, Héctor, Bedoya Dorado, Isaac, and Ramírez-Chaves, Héctor E.
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SPECTACLED bear ,NATIONAL parks & reserves ,MOUNTAIN ecology ,MENUS - Abstract
Two iconic and charismatic species that inhabit the northern Andes of South America are the Andean bear (Tremarctos ornatus) and the Mountain tapir (Tapirus pinchaque). Both species can be found sympatrically in several areas of Colombia, Ecuador, and northern Peru. Despite their overlap in distribution, little is known about interactions between both species, with few reported cases of Andean bear attacks on the Mountain tapir. Here, we report a possible attack by an Andean bear on a Mountain tapir in the northern part of Puracé National Natural Park, Colombia based on strong wounds and marks on a tapir's back and rump. The wounds match typical attack patterns generated by Andean bears and corroborates previous camera traps records of bears attacking tapirs in this locality. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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12. Rickettsia parkeri strain Atlantic rainforest in ticks (Acari: Ixodidae) of wild birds in Arauca, Orinoquia region of Colombia.
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Cardona-Romero, Marelid, Martínez-Sánchez, Estefani T., Alvarez Londoño, Johnathan, Tobón-Escobar, William D., Ossa-López, Paula A., Pérez-Cárdenas, Jorge E., Ramírez-Chaves, Héctor E., Blandón-Marín, Giovanny, Cuervo, Ludwin A., Castaño-Villa, Gabriel J., and Rivera-Páez, Fredy A.
- Abstract
Birds are important hosts for the development of the immature stages of several tick species that are vectors for disease-causing microorganisms in animals and humans. Colombia has the highest number of bird species worldwide; however, there is scarce data on the role of birds in the circulation of ticks and their associated pathogens, such as rickettsiae. The department of Arauca has a high diversity of resident and migratory (boreal and austral) birds and ticks associated with the transmission of Rickettsia. The objective of this research was to identify tick species parasitizing birds and to detect Rickettsia species in these ectoparasites. We conducted samplings in the municipalities of Arauca, Cravo Norte, and Tame between November of 2018 and August of 2019. Birds were captured using mist nets and examined for the presence of tick species. The collected ticks were morphologically and molecularly identified. Furthermore, we detected rickettsiae in ticks by amplifying fragments of the citrate synthase (gltA) and outer membrane protein (ompB) genes. We captured 606 birds belonging to 25 families and 115 species. Tick infestation rate was 3.3% (20/606) in the birds captured and eight new associations between wild birds and ticks are reported for the American continent. We identified four tick species: Amblyomma nodosum, Amblyomma longirostre , Amblyomma mixtum , and Amblyomma sp.. Moreover, we confirmed the presence of Rickettsia parkeri strain Atlantic rainforest in A. nodosum , a medically-relevant rickettsia due to cases of rickettsiosis in the American continent. This finding manifests the importance of wild birds as hosts and dispersal agents of ticks infected with pathogenic rickettsiae, as well as the need to monitor migratory birds in the Orinoquia and other regions of Colombia and America. Image 1 • Wild birds are important hosts of ticks of the family Ixodidae that are infected by pathogen rickettsiae. • This study provides knowledge on the interactions between birds, ticks, and rickettsiae in Colombia. • We report new associations between wild birds and ticks in the American continent. [ABSTRACT FROM AUTHOR]
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- 2020
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13. Coendou vestitus(Rodentia: Erethizontidae)
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Torres-Martínez, María M, Aya-Cuero, Carlos A, Noguera-Urbano, Elkin A, Passos, Fernando C, and Ramírez-Chaves, Héctor E
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Coendou vestitusThomas, 1899, a rodent commonly known as the brown hairy dwarf porcupine, is one of the smallest Neotropical porcupines; its body is covered by three different types of hair and a short tail. C. vestitusis endemic to the western foothills of the Eastern Cordillera (Cordillera Oriental) of the Andes region of Colombia, where it has been confirmed through museum voucher specimens from only six localities characterized by lower montane moist forest vegetation. Globally, C. vestitusis listed as “Data Deficient” (DD) by the International Union for Conservation of Nature (IUCN); however, in Colombia it is categorized as “Vulnerable” (VU) by the Minister of Environment and Sustainable Development.
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- 2021
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14. Plecturocebus caquetensis(Primates: Pitheciidae)
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Villota, Johana, Ramírez-Chaves, Héctor E, and Defler, Thomas R
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Plecturocebus caquetensis(Defler, Bueno, and García, 2010) is a Neotropical primate commonly called the Caquetá titi monkey. It is small-sized with long, soft pelage of mixed coloration including grayish and buffy brown to agouti tones. It lacks the blackish or whitish band that is present on the forehead of closely related species. The tail is agouti-colored and slightly banded at its base. Endemic to the Amazonian region of Colombia with a distribution in areas near the eastern slopes of the Eastern and Central Cordillera of the Andes, P. caquetensisis confirmed in 104 localities in the departments of Cauca and Caquetá in Colombia. P. caquetensisis considered “Critically Endangered” (CR) by the International Union for Conservation of Nature and Natural Resources.
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- 2021
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15. A new cryptic species of yellow-eared bat Vampyressa melissaspecies complex (Chiroptera: Phyllostomidae) from Colombia
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Morales-Martínez, Darwin M, Rodríguez-Posada, Miguel E, and Ramírez-Chaves, Héctor E
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The Vampyressa melissaspecies complex comprises three rare bat species poorly represented in museum collections. Vampyressa melissaand V. sinchiare restricted to the eastern slope of the Andes, while V. elisabethaeonly is known from Panama, in Central America. The species complex has received recent attention in terms of systematic reviews, which concluded in the description of two species: one from Panama (V. elisabethae) and one from Colombia (V. sinchi). Vampyressa melissarecently was reported from the eastern slopes of the Cordillera Oriental of Colombia, in the department of Casanare. However, morphological and genetic (Cytochrome b) comparisons showed that these specimens belong to an undescribed species of the genus. The new species is the smallest member of the V. melissacomplex and has a unique set of morphological characters compared to other Vampyressaspecies. Molecular evidence shows that the new species is sister to V. melissa(sensu stricto) from Colombia and Peru, albeit with high genetic divergence (7.9%). Nevertheless, Cytochrome bsequences of V. elisabethaeand V. sinchistill are unknown. This new species increases to six the number of species in the genus. Vampyressa melissa, V. sinchi, and the new species, exhibit restricted distributions in the eastern slopes of the Andean Cordillera, in specific altitudinal ranges. Because of geographic constraints, their biological rarity, and the high deforestation rates in their distributional area, we suggest that these three species must be considered as taxa threatened with extinction.
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- 2021
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16. Sarcoptic mange in wild quichua porcupines (Coendou quichua Thomas, 1899) in Colombia.
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Gonzalez-Astudillo, Viviana, Leon-Alvarado, Omar D., Ossa-Lopez, Paula Andrea, Rivera-Paez, Fredy Arvey, and Ramírez-Chaves, Héctor E.
- Abstract
The Quichua porcupine ( Coendou quichua ) is a neotropical rodent with uncertain taxonomic and conservation status. Two Quichua porcupines with severe hyperkeratosis and alopecia were found in the Magdalena River Basin of Colombia. Sarcoptes scabiei , the mite causing mange, a disease carried mainly by domestic animals, was confirmed via parasitological and molecular methods. This is the first report of mange in neotropical porcupines to date. The population-level impact of mange in Coendou spp., related mammals and predators in Colombia might represent a threat and needs further investigation. [ABSTRACT FROM AUTHOR]
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- 2018
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17. Handleyomys intectus(Rodentia: Cricetidae)
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Vargas, Laura M, Ramírez-Chaves, Héctor E, and Velazco, Paúl M
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Handleyomys intectus(Thomas, 1921) is a rodent commonly called the Colombian rice rat or white-footed Handley’s mouse. It is a dull brownish-gray to blackish small mouse with frosted ventral pelage and with dark gray and pure-white (or indistinctly pigmented) hairs over the dorsum of hindfeet. H. intectusis endemic to the Central Andes of Colombia and it is known from several localities between 1,500 and 2,800 m. It may be a common species along its distribution. Globally, it is considered “Least Concern” by the International Union for Conservation of Nature and Natural Resources.
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- 2019
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18. Morphological and molecular confirmation of Ornithodoros hasei (Schulze, 1935) (Acari: Argasidae) in Colombia.
- Author
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Ossa-López, Paula A., Mancilla-Agrono, Lorys Y., Micolta, Lizeth Fernanda Banguero, Ramírez-Chaves, Héctor E., Agudelo, Juan David Carvajal, Muñoz-Leal, Sebastián, Labruna, Marcelo B., Lloyd, Vett, and Rivera-Páez, Fredy A.
- Abstract
A large number of tick species are proven vectors for the transmission of bacteria, protozoa, and viruses. Soft ticks (Acari: Argasidae) in South America have been found to be the most frequent carriers of borreliae of the relapsing fever group (RFG); however, there are several information gaps specially on the taxonomy and distribution of some tick species. Here, we used light microscopy, scanning electron microscopy, and PCR amplification of a fragment of the mitochondrial 16S rRNA gene to evaluate 174 larvae of Ornithodoros (Argasidae) collected from three bat species (Eptesicus orinocensis, Molossus rufus and Noctilio albiventris) in the Orinoquia Region of Colombia. The morphological and molecular results confirmed that all the analyzed larvae corresponded to Ornithodoros hasei. Comparisons of mitochondrial 16S rDNA sequences showed low genetic divergence (0% - 0.3%) between larvae of the Department of Arauca in the Orinoquia Region and higher genetic divergence (3.4 - 4.7%) in sequences from other American countries. Our work represents the most recent collection of this species in Colombia and provides a molecular evaluation for the first time. Moreover, a new association of O. hasei with bats such as E. orinocensis is documented. Considering the wide distribution of O. hasei in the American Continent, and its putative role as vector for Borrelia , integrative studies that involve morphological, morphometric, molecular data and experimental crosses are needed to determine if the higher genetic distances are associated with cryptic speciation, as detected in other tick complexes, or represent genetic divergences among geographically different populations of O. hasei. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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19. Morphological and molecular confirmation of Ornithodoros hasei(Schulze, 1935) (Acari: Argasidae) in Colombia
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Ossa-López, Paula A., Mancilla-Agrono, Lorys Y., Micolta, Lizeth Fernanda Banguero, Ramírez-Chaves, Héctor E., Agudelo, Juan David Carvajal, Muñoz-Leal, Sebastián, Labruna, Marcelo B., Lloyd, Vett, and Rivera-Páez, Fredy A.
- Abstract
A large number of tick species are proven vectors for the transmission of bacteria, protozoa, and viruses. Soft ticks (Acari: Argasidae) in South America have been found to be the most frequent carriers of borreliae of the relapsing fever group (RFG); however, there are several information gaps specially on the taxonomy and distribution of some tick species. Here, we used light microscopy, scanning electron microscopy, and PCR amplification of a fragment of the mitochondrial 16S rRNA gene to evaluate 174 larvae of Ornithodoros(Argasidae) collected from three bat species (Eptesicus orinocensis, Molossus rufusand Noctilio albiventris) in the Orinoquia Region of Colombia. The morphological and molecular results confirmed that all the analyzed larvae corresponded to Ornithodoros hasei. Comparisons of mitochondrial 16S rDNA sequences showed low genetic divergence (0% - 0.3%) between larvae of the Department of Arauca in the Orinoquia Region and higher genetic divergence (3.4 - 4.7%) in sequences from other American countries. Our work represents the most recent collection of this species in Colombia and provides a molecular evaluation for the first time. Moreover, a new association of O. haseiwith bats such as E. orinocensisis documented. Considering the wide distribution of O. haseiin the American Continent, and its putative role as vector for Borrelia, integrative studies that involve morphological, morphometric, molecular data and experimental crosses are needed to determine if the higher genetic distances are associated with cryptic speciation, as detected in other tick complexes, or represent genetic divergences among geographically different populations of O. hasei.
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- 2023
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20. Borrelia spp. ¿patógenos olvidados o emergentes?: una aproximación desde su asociación con mamíferos silvestres en Caldas, Colombia.
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Mancilla-Agrono, Lorys Y., Banguero-Micolta, Lizeth F., Ossa-López, Paula A., Ramírez-Chaves, Héctor E., and Rivera-Páez, Fredy A.
- Abstract
Copyright of Biomédica: Revista del Instituto Nacional de Salud is the property of Instituto Nacional de Salud of Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
21. Sarna sarcóptica en un puercoespín andino (Coendou quichua) de los Andes centrales de Colombia: una evaluación integral de caracteres morfológicos, moleculares e histológicos.
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Ospina-Pérez, Érika Mayerly, Busi, Ana, Rodríguez-Hurtado, Caterine, Mejía-Fontecha, Ingrith Y., Ossa-López, Paula A., Rivera-Páez, Fredy A., and Ramírez-Chaves, Héctor E.
- Abstract
Copyright of Biomédica: Revista del Instituto Nacional de Salud is the property of Instituto Nacional de Salud of Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
22. Análisis geográfico y conservación del zorro andino Lycalopex culpaeus (Mammalia, Canidae) en Colombia.
- Author
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Noguera-Urbano, Elkin A., Ramírez-Chaves, Héctor E., and Torres-Martínez, María M.
- Abstract
Copyright of Iheringia. Série Zoologia is the property of Fundacao Zoobotanica do Rio Grande do Sul and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2016
- Full Text
- View/download PDF
23. Extension of the distribution of Amblyomma tristeKoch, 1844: Morphological and molecular confirmation of Morphotype I in Colombia
- Author
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Ossa-López, Paula A., Robayo-Sánchez, Laura Natalia, Uribe, Juan E., Ramírez-Hernández, Alejandro, Ramírez-Chaves, Héctor E., Cortés-Vecino, Jesús A., and Rivera-Páez, Fredy A.
- Abstract
Ticks of the Amblyomma maculatum(Acari: Ixodidae) group are represented by three species: Amblyomma maculatum, Amblyomma tigrinum, and Amblyomma triste. This group is widely distributed throughout the Nearctic and Neotropical regions, from the United States of America (USA) to Argentina. They parasitize several vertebrates, including domestic mammals and humans. Nonetheless, the identification and distribution of the species within the group have been controversial but can be solved with integrative studies on their taxonomy and ecology. In Colombia, a Neotropical country from which up to 58 tick species have been reported, only Amblyomma maculatumKoch, 1844 (sensu stricto - s.s.) - morphotype II – has been molecularly confirmed. Here, specimens of the A. maculatumgroup from three departments of Colombia were examined by morphological and molecular analyses. The results confirmed the wide distribution of A. maculatums.s. in Colombia. Furthermore, the presence of A. tristes.s. - morphotype I was confirmed for the first time at the molecular level, which broadens the distribution of this species in the American continent. Considering that both taxa are vectors of pathogens such as Rickettsia parkeris.s., additional taxonomic, reproductive compatibility and niche distribution studies are needed, as well as the application of new molecular markers due to the controversial taxonomy. This will allow us to explore cryptic diversity within the recently established putative groups.
- Published
- 2022
- Full Text
- View/download PDF
24. A Record of Scavenging Behavior of the Andean Bear (Tremarctos ornatus) on Mountain Tapir [Tapirus pinchaque) in Southwestern Colombia.
- Author
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Pablo López-Ordóñez, Juan, Gómez-Lora, Ignacio, and Ramírez-Chaves, Héctor E.
- Published
- 2020
25. Erratum to: A new cryptic species of yellow-eared bat Vampyressa melissaspecies complex (Chiroptera: Phyllostomidae) from Colombia
- Author
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Morales-Martínez, Darwin M, Rodríguez-Posada, Miguel E, and Ramírez-Chaves, Héctor E
- Published
- 2021
- Full Text
- View/download PDF
26. Erratum: Handleyomys intectus(Rodentia: Cricetidae)
- Author
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Vargas, Laura M, Ramírez-Chaves, Héctor E, and Velazco, Paúl M
- Published
- 2019
- Full Text
- View/download PDF
27. Mustela felipei (Carnivora: Mustelidae)
- Author
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Ramírez Chaves, Héctor E. and Patterson, Bruce D.
- Abstract
Mustela felipei Izor and de la Torre, 1978, is a mustelid commonly called the Colombian or Don Felipe’s weasel and is South America’s smallest weasel. It is also the darkest weasel in South America, with little variation in dorsal coloration; the venter is cream-colored with an oval spot the same color as the dorsum. The species is endemic to the Andes. Known from 6 specimens and 5 localities in Colombia and Ecuador, it may be the rarest carnivore in South America. Globally, it is considered “Vulnerable” by the International Union for Conservation of Nature and Natural Resources, although in Colombia it is considered “Endangered.”
- Published
- 2014
- Full Text
- View/download PDF
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