40 results on '"Capdevielle-Dulac, C."'
Search Results
2. The Cotesia sesamiae story: insight into host-range evolution in a Hymenoptera parasitoid and implication for its use in biological control programs
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Kaiser, L., Dupas, S., Branca, A., Herniou, E. A., Clarke, C. W., Capdevielle Dulac, C., Obonyo, J., Benoist, R., Gauthier, J., Calatayud, P. A., Silvain, J. F., and Le Ru, B. P.
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- 2017
- Full Text
- View/download PDF
3. Clarifying the source of Conicofrontia sesamoides Hampson (Lepidoptera: Noctuidae) population in South African sugarcane using morphological identification and mitochondrial DNA analysis
- Author
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Assefa, Y., Goftishu, M., Capdevielle-Dulac, C., and Le Ru, B.
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- 2017
- Full Text
- View/download PDF
4. PSDR4 DYNAMIQUES - Dynamiques de la biodiversité et des services écosystémiques pendant le développement périurbain. Innovations Agronomiques 86, 71-79
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Allaoui, F., Barraud, C., Baudry, E., Bessa-Gomes, C., Bimbot, M., Capdevielle-Dulac, C., Crouzet, O., Delarue, G., Hanot, C., Harry, M., Héraudet, V., Hulot, F.D., Karolak, S., Lamy, I., Nélieu, S., and Renaud, E.
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- 2022
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5. Reconstructing the invasion and the demographic history of the yellow-legged hornet, Vespa velutina, in Europe
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Arca, M., Mougel, F., Guillemaud, T., Dupas, S., Rome, Q., Perrard, A., Muller, F., Fossoud, A., Capdevielle-Dulac, C., Torres-Leguizamon, M., Chen, X. X., Tan, J. L., Jung, C., Villemant, C., Arnold, G., and Silvain, J.-F.
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- 2015
- Full Text
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6. Development of microsatellite markers for the yellow-legged Asian hornet, Vespa velutina, a major threat for European bees
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Arca, M., Capdevielle-Dulac, C., Villemant, C., Mougel, F., Arnold, G., and Silvain, J.-F.
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- 2012
- Full Text
- View/download PDF
7. Inferring native range and invasion scenarios with mitochondrial DNA: the case of T. solanivora successive north–south step-wise introductions across Central and South America
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Torres-Leguizamón, M., Dupas, S., Dardon, D., Gómez, Y., Niño, L., Carnero, A., Padilla, A., Merlin, I., Fossoud, A., Zeddam, J.-L., Lery, X., Capdevielle-Dulac, C., Dangles, O., and Silvain, J.-F.
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- 2011
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- View/download PDF
8. Genetic bottleneck in invasive species: the potato tuber moth adds to the list
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Puillandre, N., Dupas, S., Dangles, O., Zeddam, J.-L., Capdevielle-Dulac, C., Barbin, K., Torres-Leguizamon, M., and Silvain, J.-F.
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- 2008
- Full Text
- View/download PDF
9. Population genetics of the Mediterranean corn borer (Sesamia nonagrioides) differs between wild and cultivated plants
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Naino Jika, Abdel Kader, Le Ru, B., Capdevielle-Dulac, C., Chardonnet, F., Silvain, J. F., Kaiser, L., Dupas, S., Evolution, génomes, comportement et écologie (EGCE), Institut de Recherche pour le Développement (IRD)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), and Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay
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Topography ,[SDV]Life Sciences [q-bio] ,Plant Science ,Moths ,Plant Genetics ,Geographical locations ,ComputingMilieux_MISCELLANEOUS ,Geography ,Eukaryota ,food and beverages ,Agriculture ,Plants ,Europe ,Insects ,Phylogeography ,Experimental Organism Systems ,Biogeography ,Moths and Butterflies ,Medicine ,France ,Research Article ,Valleys ,Arthropoda ,Science ,Research and Analysis Methods ,Zea mays ,Host-Parasite Interactions ,Model Organisms ,Plant and Algal Models ,Genetics ,Animals ,Grasses ,European Union ,Evolutionary Biology ,Landforms ,Population Biology ,Ecology and Environmental Sciences ,fungi ,Organisms ,Biology and Life Sciences ,Genetic Variation ,Geomorphology ,Bayes Theorem ,Invertebrates ,Maize ,Genetics, Population ,Animal Studies ,Earth Sciences ,People and places ,Population Genetics - Abstract
The population genetic structure of crop pest populations gives information about their spatial ecology, which helps in designing management strategies. In this paper, we investigated the genetic structure of the Mediterranean Corn Borer (MCB), Sesamia nonagrioides Lefèbvre (Lepidoptera: Noctuidae), one of the most important maize pests in the Mediterranean countries, using microsatellite markers for the first time in this species. Insects were collected in twenty-five locations in southwest and southeast France from cultivated and wild host plants (Zea mays, Sorghum halepense and Typha domingensis). Contrary to what has been reported so far in France, we found that MCB populations could be locally abundant on wild poales plants. Analysis was carried out at 11 polymorphic microsatellite markers. Molecular variance was significantly determined by geography, then by host plant, with 17% and 4%, respectively, when considered as a major effect, and with 14% and 1%, respectively, when considered as a marginal effect in permutational analysis. Multidimensional scaling (MDS) and GENELAND Bayesian clustering suggested that populations infecting wild plants (T. domingensis and S. halepense) were more structured locally than those affecting cultivated maize. In S. halepense, significant Isolation By Distance (IBD) indicated that this factor could explain genetic differentiation of the moth populations. In T. domingensis, local population differentiation was strong but did not depend on distance. The implication of this absence of population structure in maize and the heterogeneity of population genetics patterns in wild plants are discussed in the context of the population dynamics hypothesis and population management strategies.
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- 2020
10. Chromosomal resolution reveals symbiotic virus colonization of parasitic wasp genomes
- Author
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Gauthier, J., Boulain, H., van Vugt, J.F.A., Baudry, L., Persyn, E., Aury, J.M., Noel, B., Bretaudeau, A., Legeai, Fabrice, Warris, S., Amine Chebbi, M., Dubreuil, Géraldine, Duvic, Bernard, Kremer, Natacha, Gayral, P., Musset, K., Thibaut, J., Bigot, D., Bressac, C., Moreau, S., Periquet, G., Harry, M., Montagné, N., Boulogne, I., Sabeti-Azad, M., Maïbèche, M., Chertemps, T., Hilliou, F., Siaussat, D., Amselem, J., Luyten, I., Capdevielle-Dulac, C., Labadie, Karine, Laís Merlin, B., Barbe, Valérie, de Boer, J.G., Marbouty, M., Cônsoli, F.L., Dupas, S., Hua Van, A., Le Goff, G., Bézier, Annie, Jacquin-Joly, E., Whitfield, James B., Vet, L.E.M., Smid, H.M., Kaiser-Arnault, L., Koszul, R., Huguet, Elisabeth, Herniou, Elisabeth A., and Drezen, J.M.
- Subjects
BIOS Applied Bioinformatics ,fungi ,Life Science ,Laboratory of Entomology ,Laboratorium voor Entomologie - Abstract
Most endogenous viruses, an important proportion of eukaryote genomes, are doomed to slowly decay. Little is known, however, on how they evolve when they confer a benefit to their host. Bracoviruses are essential for the parasitism success of parasitoid wasps, whose genomes they integrated ~103 million years ago. Here we show, from the assembly of a parasitoid wasp genome, for the first time at a chromosomal scale, that symbiotic bracovirus genes spread to and colonized all the chromosomes. Moreover, large viral clusters are stably maintained suggesting strong evolutionary constraints. Genomic comparison with another wasps revealed that this organization was already established ~53 mya. Transcriptomic analyses highlight temporal synchronization of viral gene expression, leading to particle production. Immune genes are not induced, however, indicating the virus is not perceived as foreign by the wasp. This recognition suggests that no conflicts remain between symbiotic partners when benefits to them converge.
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- 2020
11. Genetic hitchhiking and resistance evolution to transgenic Bt toxins: insights from the African stalk borer Busseola fusca (Noctuidae)
- Author
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Campagne, P, primary, Capdevielle-Dulac, C, additional, Pasquet, R, additional, Cornell, S J, additional, Kruger, M, additional, Silvain, J-F, additional, LeRü, B, additional, and Van den Berg, J, additional
- Published
- 2016
- Full Text
- View/download PDF
12. Is genome size of Lepidoptera linked to host plant range?
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Calatayud, P.-A., primary, Petit, C., additional, Burlet, N., additional, Dupas, S., additional, Glaser, N., additional, Capdevielle-Dulac, C., additional, Le Ru, B., additional, Jacquin-Joly, E., additional, Kaiser-Arnauld, L., additional, Harry, M., additional, and Vieira, C., additional
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- 2016
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13. Permanent genetic resources added to molecular ecology resources database 1 august 2011-30 september 2011
- Author
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A'Hara , S.W., Amouroux , P., Argo , Emily.E., Avand-Faghih , A., Barat , Ashoktaru, Barbieri , Luiz, Bert , Theresa M., Blatrix , R., Blin , Aurelie, Bouktila , D., Broome , A., Burban , Christian, Capdevielle-Dulac , C., Casse , N., Chandra , Suresh, Cottrell , J.E., Crawford , Charles R., Davis , Michelle C., Delatte , H., Desneux , Nicolas, Djieto-Lordon , C., Dubois , M.P., El-Mergawy , A.A.M., Gallardo-Escarate , C., Garcia , M., Gardiner , Mary M., Guillemaud , Thomas, Haye , P.A., Hellemans , B., Hinrichsen , P., Hyun Jeon , J.I., Kerdelhue , Carole, Kharrat , I., Labbe , Ellen M., Lahood , Eric, Legoff , Isabelle, Li , H., Liu , S.S., Liu , Y.G., Long , D., Maes , G.E., Magnoux , Emmanuelle, Makni , H., Makni , M., Malausa , Thibaut, Mckey , D., McMillen-Jackson , Annel L., Mendez , M.A., Mezghani-Khemakhem , M., Michel , Andy P., Paul , Moran, Muriel-Cunha , Janice, NIBOUCHE , S., Normand , F., Palkovacs , Eric P., Pande , Veena, Parmentier , K., Peccoud , J., Piats-Check , D., Puchulutegui , Cécilia, Ramos , R., Ravest , G., Richner , Heinz, Robbens , J., Rochat , Didier, Rousselet , Jérôme, Saladin , Verena, Sauve , M., Schlei , Ora, Schultz , Thomas F., Scobie , A.R., Segovia , N.I., Seyoum , Seifu, Silvain , J.F., Tabone , Elisabeth, Van Houdt , J.K.J., Vandamme , S.G., Volckaert , A.M., Wenburg , John, Willis , Theodore V., Ye , N.H., Zhang , W., Zhang , Y.X., Forest Research, Northern Research Station, The Roslin Institute, Fonctionnement agroécologique et performances des systèmes de cultures horticoles ( HORTSYS ), Centre de Coopération Internationale en Recherche Agronomique pour le Développement ( CIRAD ), Université de la Réunion ( UR ), Marine Conservation Molecular Facility, Marine Laboratory, Nicholas School of the Environment, Duke university [Durham], Iranian Research Institute of Plant Protection, Directorate of Coldwater Fisheries Research - Molecular Genetics Laboratory, Indian Council of Agricultural Research, Florida Fish and Wildlife Conservation Commission, Centre d’Ecologie Fonctionnelle et Evolutive ( CEFE ), Université Paul-Valéry - Montpellier 3 ( UM3 ) -Centre international d'études supérieures en sciences agronomiques ( Montpellier SupAgro ) -École pratique des hautes études ( EPHE ) -Institut national de la recherche agronomique [Montpellier] ( INRA Montpellier ) -Université de Montpellier ( UM ) -Centre National de la Recherche Scientifique ( CNRS ) -Institut de Recherche pour le Développement ( IRD [France-Sud] ) -Institut national d’études supérieures agronomiques de Montpellier ( Montpellier SupAgro ), Université Montpellier 2 - Sciences et Techniques ( UM2 ), Institut Sophia Agrobiotech [Sophia Antipolis] ( ISA ), Centre National de la Recherche Scientifique ( CNRS ) -Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ) -Institut National de la Recherche Agronomique ( INRA ), Unité génomique des insectes ravageurs des cultures d’intérêt agronomique, Université Tunis El-Manar, Institut Supérieur de Biotechnologie Béja, Université de Jendouba ( UJ ), Biodiversité, Gènes & Communautés ( BioGeCo ), Institut National de la Recherche Agronomique ( INRA ) -Université de Bordeaux ( UB ), UR 072, Laboratoire Evolution, Génomes et Spéciation, Institut de Recherche pour le Développement ( IRD ), UPR9034 Evolution, génomes et spéciation, Centre National de la Recherche Scientifique ( CNRS ), Université Paris-Sud - Paris 11 ( UP11 ), Laboratoire Mer, Molécules, Santé (MMS), Université du Mans, Molecular Genetics Laboratory, Directorate of Coldwater Fisheries Research, UMR Peuplements végétaux et bioagresseurs en milieu tropical ( UMR PVBMT - Université de La Réunion ), Faculty of Science, Laboratory of Zoology, Université de Yaoundé I [Yaoundé], Department of Molecular Biology, Genetic Engineering and Biotechnology Research Institute (GEBRI), Minoufia University, Departamento de Oceanografía, Facultad de Ciencias Naturales y Oceanográficas, Centro de Biotecnología, Universidad de Concepción [Chile], Department of Entomology, The Ohio Agricultural Research and Development Center, Ohio State University [Columbus] ( OSU ), Interactions Biotiques et Santé Végétale, Institut National de la Recherche Agronomique ( INRA ), Departamento de Biología Marina, Centro de Estudios Avanzados en Zonas Áridas, Universidad Católica del Norte, Laboratory of Animal Diversity and Systematics, BioGenomics Division, Université Catholique de Louvain ( UCL ), Laboratorio de Biotecnología, Centro de Investigación La Platina, Instituto de Investigaciones Agropecuarias, Biomedic, Centre de Biologie pour la Gestion des Populations ( CBGP ), Centre de Coopération Internationale en Recherche Agronomique pour le Développement ( CIRAD ) -Centre international d'études supérieures en sciences agronomiques ( Montpellier SupAgro ) -Institut national de la recherche agronomique [Montpellier] ( INRA Montpellier ) -Université de Montpellier ( UM ) -Institut de Recherche pour le Développement ( IRD [France-Sud] ) -Institut national d’études supérieures agronomiques de Montpellier ( Montpellier SupAgro ), Unité génomique des insectes ravageurs des cultures d’intérêt agronomique, Faculté des Sciences de Tunis, Department of Biology, University of Maine, Conservation Biology Division, Northwest Fisheries Science Center, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers University, Ocean University of China, Shandong Entry-Exit Inspection and Quarantine Bureau, Plantlife Scotland, Laboratory of Animal Diversity and Systematics, BioGenomics, Unité de recherche Zoologie Forestière ( UZF ), Institut Supérieur de l’Animation pour la Jeunesse et la Culture, Université de Tunis, Laboratorio de Genética y Evolución, Facultad de Ciencias, Universidad de Santiago de Chile [Santiago] ( USACH ), Faculdade de Ciências Biológicas, Universidade Federal do Pará, Department of Biotechnology, Kumaon University, Institute for Agricultural and Fisheries Research, Santiago, Syngenta Chili, Institute of Ecology and Evolution, Departement Evolutionary Ecology, University of Bern, Physiologie de l'Insecte, Signalisation et Communication [Versailles] ( PISC ), Conservation Genetics Laboratory, United States Fish and Wildlife Service ( USFWS ), Cairngorms Rare Plants Project, Scottish Natural Heritage, Laboratory of Animal Diversity and Systematics, BioGenomics Division, Laboratory for Cytogenetics and Genome Research, Department of Environmental Science, Division of EcoScience, EWHA Womans University ( EWHA ), Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, and Shandong Agricultural University ( SDAU )
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animals ,fishes genetics ,insects genetics ,databases genetic ,pinus genetics ,molecular sequence data ,microsatellite repeats ,insecte ,génétique ,invertebrates genetics ,[ SDV.EE ] Life Sciences [q-bio]/Ecology, environment - Abstract
This article documents the addition of 299 microsatellite marker loci and nine pairs of single-nucleotide polymorphism (SNP) EPIC primers to the Molecular Ecology Resources (MER) Database. Loci were developed for the following species: Alosa pseudoharengus, Alosa aestivalis, Aphis spiraecola, Argopecten purpuratus, Coreoleuciscus splendidus, Garra gotyla, Hippodamia convergens, Linnaea borealis,Menippe mercenaria,Menippe adina, Parus major, Pinus densiflora, Portunus trituberculatus, Procontarinia mangiferae, Rhynchophorus ferrugineus, Schizothorax richardsonii, Scophthalmus rhombus, Tetraponera aethiops, Thaumetopoea pityocampa, Tuta absoluta and Ugni molinae. These loci were cross-tested on the following species: Barilius bendelisis, Chiromantes haematocheir, Eriocheir sinensis, Eucalyptus camaldulensis, Eucalyptus cladocalix, Eucalyptus globulus, Garra litaninsis vishwanath, Garra para lissorhynchus, Guindilla trinervis, Hemigrapsus sanguineus, Luma chequen. Guayaba, Myrceugenia colchagu¨ensis, Myrceugenia correifolia, Myrceugenia exsucca, Parasesarma plicatum, Parus major, Portunus pelagicus, Psidium guayaba, Schizothorax richardsonii, Scophthalmus maximus, Tetraponera latifrons, Thaumetopoea bonjeani, Thaumetopoea ispartensis, Thaumetopoea libanotica, Thaumetopoea pinivora, Thaumetopoea pityocampa ena clade, Thaumetopoea solitaria, Thaumetopoea wilkinsoni and Tor putitora. This article also documents the addition of nine EPIC primer pairs for Euphaea decorata, Euphaea formosa, Euphaea ornata and Euphaea yayeyamana.
- Published
- 2012
14. Inferring native range and invasion scenarios with mitochondrial DNA : the case of T. solanivora successive north-south step-wise introductions across Central and South America
- Author
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Torres-Leguizamon, Magallita, Dupas, Stéphane, Dardon, D., Gomez, Y., Nino, L., Carnero, A., Padilla, A., Merlin, I., Fossoud, Amandine, Zeddam, Jean-Louis, Léry, Xavier, Capdevielle Dulac, C., Dangles, Olivier, and Silvain, Jean-François
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Invasive species ,fungi ,parasitic diseases ,Tecia solanivora ,food and beverages ,Mitochondrial DNA ,Genetic diversity ,Invasion scenario - Abstract
Tecia solanivora (Lepidoptera: Gelechiidae) is an invasive species that attacks the tubers of the potato Solanum tuberosum. It is considered a serious pest of potato crops and stocks in all countries where it occurs. In the present study, we sequenced 541 individuals sampled across the T. solanivora distribution range, using the mitochondrial DNA marker Cytochrome b (Cytb) to delimit the area of species origin. We also analyzed the genetic structure of T. solanivora in its putative area of origin and described differences in haplotype diversity between samples from different geographic origins affected by the invasion. We observed a gap in the level of genetic diversity between Guatemalan samples (h between 0.77 and 0.97) and those from Costa-Rica, Venezuela, Colombia, Ecuador and the Canary Islands (h between 0 and 0.56). The number of haplotypes has decreased over the colonization process, ending with the observation of a single haplotype in Colombia, Ecuador and the Canary Islands. Consequently, the invasion of South American countries by T. solanivora is likely to have had a front-like step-wise progression, where the most recently invaded country becomes the source of subsequent invasion.
- Published
- 2011
15. Host-plant diversity of Sesamia calamistis Hampson (Lepidoptera: Noctuidae) : Cytochrome b gene sequences reveal local genetic differentiation
- Author
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G.O., Ong'Amo, Ru B.P., Le, Moyal P., P.-A., Calatayud, Gall P., Le, C.K.P.O., Ogol, E.D., Kokwaro, Capdevielle-Dulac, C., J.-F., Silvain, Simonneau, Evelyne, Laboratoire Evolution, Génomes et Spéciation (LEGS), and Centre National de la Recherche Scientifique (CNRS)
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[SDU.OTHER] Sciences of the Universe [physics]/Other ,[SDU.OTHER]Sciences of the Universe [physics]/Other - Published
- 2008
16. Genetic hitchhiking and resistance evolution to transgenic Bt toxins: insights from the African stalk borer Busseola fusca (Noctuidae)
- Author
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Campagne, P, Capdevielle-Dulac, C, Pasquet, R, Cornell, S J, Kruger, M, Silvain, J-F, LeRü, B, and Van den Berg, J
- Abstract
Since transgenic crops expressing Bacillus thuringiensis (Bt) toxins were first released, resistance evolution leading to failure in control of pests populations has been observed in a number of species. Field resistance of the moth Busseola fusca was acknowledged 8 years after Bt maize was introduced in South Africa. Since then, field resistance of this corn borer has been observed at several locations, raising questions about the nature, distribution and dynamics of the resistance trait. Using genetic markers, our study identified four outlier loci clearly associated with resistance. In addition, genetic structure at neutral loci reflected extensive gene flow among populations. A realistically parameterised model suggests that resistance could travel in space at speed of several kilometres a year. Markers at outlier loci delineated a geographic region associated with resistance spread. This was an area of approximately 100 km radius, including the location where resistance was first reported. Controlled crosses corroborated these findings and showed significant differences of progeny survival on Bt plants depending on the origin of the resistant parent. Last, our study suggests diverse resistance mutations, which would explain the widespread occurrence of resistant larvae in Bt fields across the main area of maize production in South Africa.
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- 2017
- Full Text
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17. Development of microsatellite markers for the yellow-legged Asian hornet, Vespa velutina, a major threat for European bees
- Author
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Arca, M., primary, Capdevielle-Dulac, C., additional, Villemant, C., additional, Mougel, F., additional, Arnold, G., additional, and Silvain, J.-F., additional
- Published
- 2011
- Full Text
- View/download PDF
18. Isolation and characterization of polymorphic microsatellites in the Potato Tuber Moth Tecia solanivora (Povolny, 1973) (Lepidoptera: Gelechiidae)
- Author
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TORRES‐LEGUIZAMON, M., primary, SOLIGNAC, M., additional, VAUTRIN, D., additional, CAPDEVIELLE‐DULAC, C., additional, DUPAS, S., additional, and SILVAIN, J.‐F., additional
- Published
- 2009
- Full Text
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19. Host plant diversity ofSesamia calamistis: cytochromebgene sequences reveal local genetic differentiation
- Author
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Ong’amo, G. O., primary, Le Rü, B. P., additional, Moyal, P., additional, Calatayud, P.‐A., additional, Le Gall, P., additional, Ogol, C. K. P. O., additional, Kokwaro, E. D., additional, Capdevielle‐Dulac, C., additional, and Silvain, J.‐F., additional
- Published
- 2008
- Full Text
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20. Genetic bottleneck in invasive species: the potato tuber moth adds to the list
- Author
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Puillandre, N., primary, Dupas, S., additional, Dangles, O., additional, Zeddam, J.-L., additional, Capdevielle-Dulac, C., additional, Barbin, K., additional, Torres-Leguizamon, M., additional, and Silvain, J.-F., additional
- Published
- 2007
- Full Text
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21. Permanent Genetic Resources added to Molecular Ecology Resources Database 1 August 2011-30 September 2011.
- Author
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Primer Development Consortium, Molecular Ecology Resources, A'HARA, S. W., AMOUROUX, P., ARGO, EMILY E., AVAND-FAGHIH, A., BARAT, ASHOKTARU, BARBIERI, LUIZ, BERT, THERESA M., BLATRIX, R., BLIN, AURÉLIE, BOUKTILA, D., BROOME, A., BURBAN, C., CAPDEVIELLE-DULAC, C., CASSE, N., CHANDRA, SURESH, CHO, KYUNG JIN, COTTRELL, J. E., CRAWFORD, CHARLES R., and DAVIS, MICHELLE C.
- Subjects
MICROSATELLITE repeats ,FISH genetics ,MENIPPE mercenaria ,ALEWIFE ,SPIREA aphid ,ARGOPECTEN ,GREAT tit ,GARRA - Abstract
This article documents the addition of 299 microsatellite marker loci and nine pairs of single-nucleotide polymorphism (SNP) EPIC primers to the Molecular Ecology Resources (MER) Database. Loci were developed for the following species: Alosa pseudoharengus, Alosa aestivalis, Aphis spiraecola, Argopecten purpuratus, Coreoleuciscus splendidus, Garra gotyla, Hippodamia convergens, Linnaea borealis, Menippe mercenaria, Menippe adina, Parus major, Pinus densiflora, Portunus trituberculatus, Procontarinia mangiferae, Rhynchophorus ferrugineus, Schizothorax richardsonii, Scophthalmus rhombus, Tetraponera aethiops, Thaumetopoea pityocampa, Tuta absoluta and Ugni molinae. These loci were cross-tested on the following species: Barilius bendelisis, Chiromantes haematocheir, Eriocheir sinensis, Eucalyptus camaldulensis, Eucalyptus cladocalix, Eucalyptus globulus, Garra litaninsis vishwanath, Garra para lissorhynchus, Guindilla trinervis, Hemigrapsus sanguineus, Luma chequen. Guayaba, Myrceugenia colchagüensis, Myrceugenia correifolia, Myrceugenia exsucca, Parasesarma plicatum, Parus major, Portunus pelagicus, Psidium guayaba, Schizothorax richardsonii, Scophthalmus maximus, Tetraponera latifrons, Thaumetopoea bonjeani, Thaumetopoea ispartensis, Thaumetopoea libanotica, Thaumetopoea pinivora, Thaumetopoea pityocampa ena clade, Thaumetopoea solitaria, Thaumetopoea wilkinsoni and Tor putitora. This article also documents the addition of nine EPIC primer pairs for Euphaea decorata, Euphaea formosa, Euphaea ornata and Euphaea yayeyamana. [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
- View/download PDF
22. Host plant diversity of Sesamia calamistis: cytochrome b gene sequences reveal local genetic differentiation.
- Author
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Ong'amo, G. O., Le R, B. P., Moyal, P., Calatayud, P.-A., Le Gall, P., Ogol, C. K. P. O., Kokwaro, E. D., Capdevielle-Dulac, C., and Silvain, J.-F.
- Subjects
SESAMIA ,INSECT host plants ,CYTOCHROME c ,PLANT genetics ,CORN diseases ,SORGHUM diseases & pests - Abstract
Sesamia calamistis Hampson (Lepidoptera: Noctuidae) is one of the indigenous stem borer pests associated with maize ( Zea mays L.) and sorghum [ Sorghum bicolor (L.) Moench] (both Poaceae) in Africa. Its pest status varies across the continent and this has been attributed to variation in diet breadth and ecological preferences among populations. Its larvae were found on 12 plant species during a study initiated at four sites (Muhaka, Mtito Andei, Kakamega, and Suam) in Kenya to estimate its diet breadth and genetic population structure. Ten of the infested plant species belonged to the family Poaceae [ Echinochloa haploclada (Stapf) Stapf, Eleusine corocana L., Eleusine jaegeri Pilg., Panicum deustum Thunb, Panicum maximum Jacquin, Pennisetum purpureum Schumacher, Setaria verticillata (L.) P. Beauv., Sorghum arundinaceum (Desvaux) Stapf, S. bicolor, and Z. mays]; the other two were Cyperaceae: Cyperus distans L. and Cyperus dives Delile. Combined with collections from other African countries (Uganda, South Africa, Benin, Ghana, Nigeria, and Togo), comparisons of partial cytochrome b sequences revealed the presence of 68 haplotypes that differentiated into clades I and II. In Kenya, the two clades colonized different regions, except in Mtito Andei where they co-existed. Individuals from Mtito Andei could be separated based on their host plants: clade I with 14 haplotypes was found mainly on maize (78.6%), whereas clade II with 10 haplotypes was found mainly among wild host plants (63.6%). Detection of divergence among these clades with cytochrome b suggests that their evolutionary separation may have taken place about one million years ago. This article discusses the potential implication of this differentiation for the management of S. calamistis as a pest of maize and sorghum in Africa. [ABSTRACT FROM AUTHOR]
- Published
- 2008
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23. Hot and cold waves decrease sperm production and bias sex ratio in the parasitoid wasp Cotesia typhae (Hymenoptera, Braconidae).
- Author
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Bressac C, El Sabrout A, Kifouche F, Anne M, Capdevielle-Dulac C, Mougel F, and Kaiser L
- Subjects
- Male, Female, Animals, Sex Ratio, Ecosystem, Semen, Spermatozoa, Pupa, Wasps, Hymenoptera, Moths
- Abstract
Parasitoid wasps are haplodiploid, meaning that sperm stored by egg laying females are only used to produce daughters. Thus, the sex ratio of the offspring depends on the availability of sperm after mating. In these insects, males are sensitive to temperature at the pupal stage. This stress leads to subfertility due to a drastic reduction in the number of sperm produced and transferred to females. Experiments were conducted under controlled conditions on the parasitoid wasp Cotesia typhae (Hymenoptera, Braconidae), a natural enemy of the invading pest Sesamia nonagrioides (Lepidoptera, Noctuidae). At 25-27 °C, sperm production was measured for 7 days, and found to reach a plateau at the third day of adult life. It leads to a final amount around 25,000 sperm per male. A male can successfully inseminate at least 10 females, producing predominantly female offspring. Sperm production decreased significantly after 1 day of pupal exposure to heat at 34 or 36 °C and 7 days of cold at 0, 5 or 10 °C. This highlights that both cold and heat are stressful. After mating with one male treated at 10 or 34 °C, females store fewer sperm than the control, and produce fewer daughters. The sex ratio of the offspring is male biased when males experienced temperature stresses during development, like other parasitoid wasps. In the field, C. typhae populations would be affected by heat and cold, at least at the pupal stage. This lowers overwintering risk in case this biological agent was introduced in Europe. This risk is both economical, as companies seek to establish costly continuous production to sell beneficial insects, and ecological as the introduced population would not settle in the ecosystem. Lastly, the transport and storage of this insect of agronomic interest would need to consider temperature variations to ensure successful application., 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 Elsevier Ltd. All rights reserved.)
- Published
- 2023
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24. Author Correction: Chromosomal scale assembly of parasitic wasp genome reveals symbiotic virus colonization.
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Gauthier J, Boulain H, van Vugt JJFA, Baudry L, Persyn E, Aury JM, Noel B, Bretaudeau A, Legeai F, Warris S, Chebbi MA, Dubreuil G, Duvic B, Kremer N, Gayral P, Musset K, Josse T, Bigot D, Bressac C, Moreau S, Periquet G, Harry M, Montagné N, Boulogne I, Sabeti-Azad M, Maïbèche M, Chertemps T, Hilliou F, Siaussat D, Amselem J, Luyten I, Capdevielle-Dulac C, Labadie K, Merlin BL, Barbe V, de Boer JG, Marbouty M, Cônsoli FL, Dupas S, Hua-Van A, Le Goff G, Bézier A, Jacquin-Joly E, Whitfield JB, Vet LEM, Smid HM, Kaiser L, Koszul R, Huguet E, Herniou EA, and Drezen JM
- Published
- 2021
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25. Chromosomal scale assembly of parasitic wasp genome reveals symbiotic virus colonization.
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Gauthier J, Boulain H, van Vugt JJFA, Baudry L, Persyn E, Aury JM, Noel B, Bretaudeau A, Legeai F, Warris S, Chebbi MA, Dubreuil G, Duvic B, Kremer N, Gayral P, Musset K, Josse T, Bigot D, Bressac C, Moreau S, Periquet G, Harry M, Montagné N, Boulogne I, Sabeti-Azad M, Maïbèche M, Chertemps T, Hilliou F, Siaussat D, Amselem J, Luyten I, Capdevielle-Dulac C, Labadie K, Merlin BL, Barbe V, de Boer JG, Marbouty M, Cônsoli FL, Dupas S, Hua-Van A, Le Goff G, Bézier A, Jacquin-Joly E, Whitfield JB, Vet LEM, Smid HM, Kaiser L, Koszul R, Huguet E, Herniou EA, and Drezen JM
- Subjects
- Animals, Base Sequence, Conserved Sequence, Nudiviridae genetics, Receptors, Odorant genetics, Smell, Symbiosis, Synteny, Wasps virology, Biological Evolution, Chromosomes, Insect, Genome, Insect, Polydnaviridae genetics, Wasps genetics
- Abstract
Endogenous viruses form an important proportion of eukaryote genomes and a source of novel functions. How large DNA viruses integrated into a genome evolve when they confer a benefit to their host, however, remains unknown. Bracoviruses are essential for the parasitism success of parasitoid wasps, into whose genomes they integrated ~103 million years ago. Here we show, from the assembly of a parasitoid wasp genome at a chromosomal scale, that bracovirus genes colonized all ten chromosomes of Cotesia congregata. Most form clusters of genes involved in particle production or parasitism success. Genomic comparison with another wasp, Microplitis demolitor, revealed that these clusters were already established ~53 mya and thus belong to remarkably stable genomic structures, the architectures of which are evolutionary constrained. Transcriptomic analyses highlight temporal synchronization of viral gene expression without resulting in immune gene induction, suggesting that no conflicts remain between ancient symbiotic partners when benefits to them converge.
- Published
- 2021
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26. Quantitative trait loci involved in the reproductive success of a parasitoid wasp.
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Benoist R, Capdevielle-Dulac C, Chantre C, Jeannette R, Calatayud PA, Drezen JM, Dupas S, Le Rouzic A, Le Ru B, Moreau L, Van Dijk E, Kaiser L, and Mougel F
- Subjects
- Animals, Female, Genetic Linkage, Phenotype, Quantitative Trait Loci genetics, Reproduction genetics, Polydnaviridae genetics, Wasps genetics
- Abstract
Dissecting the genetic basis of intraspecific variations in life history traits is essential to understand their evolution, notably for potential biocontrol agents. Such variations are observed in the endoparasitoid Cotesia typhae (Hymenoptera: Braconidae), specialized on the pest Sesamia nonagrioides (Lepidoptera: Noctuidae). Previously, we identified two strains of C. typhae that differed significantly for life history traits on an allopatric host population. To investigate the genetic basis underlying these phenotypic differences, we used a quantitative trait locus (QTL) approach based on restriction site-associated DNA markers. The characteristic of C. typhae reproduction allowed us generating sisters sharing almost the same genetic content, named clonal sibship. Crosses between individuals from the two strains were performed to generate F2 and F8 recombinant CSS. The genotypes of 181 clonal sibships were determined as well as the phenotypes of the corresponding 4,000 females. Informative markers were then used to build a high-quality genetic map. These 465 markers spanned a total length of 1,300 cM and were organized in 10 linkage groups which corresponded to the number of C. typhae chromosomes. Three QTLs were detected for parasitism success and two for offspring number, while none were identified for sex ratio. The QTLs explained, respectively, 27.7% and 24.5% of the phenotypic variation observed. The gene content of the genomic intervals was investigated based on the genome of C. congregata and revealed 67 interesting candidates, as potentially involved in the studied traits, including components of the venom and of the symbiotic virus (bracovirus) shown to be necessary for parasitism success in related wasps., (© 2020 John Wiley & Sons Ltd.)
- Published
- 2020
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27. Population genetics of the Mediterranean corn borer (Sesamia nonagrioides) differs between wild and cultivated plants.
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Naino Jika AK, Le Ru B, Capdevielle-Dulac C, Chardonnet F, Silvain JF, Kaiser L, and Dupas S
- Subjects
- Animals, Bayes Theorem, France, Genetic Variation, Geography, Host-Parasite Interactions genetics, Agriculture, Genetics, Population, Moths genetics, Zea mays growth & development, Zea mays parasitology
- Abstract
The population genetic structure of crop pest populations gives information about their spatial ecology, which helps in designing management strategies. In this paper, we investigated the genetic structure of the Mediterranean Corn Borer (MCB), Sesamia nonagrioides Lefèbvre (Lepidoptera: Noctuidae), one of the most important maize pests in the Mediterranean countries, using microsatellite markers for the first time in this species. Insects were collected in twenty-five locations in southwest and southeast France from cultivated and wild host plants (Zea mays, Sorghum halepense and Typha domingensis). Contrary to what has been reported so far in France, we found that MCB populations could be locally abundant on wild poales plants. Analysis was carried out at 11 polymorphic microsatellite markers. Molecular variance was significantly determined by geography, then by host plant, with 17% and 4%, respectively, when considered as a major effect, and with 14% and 1%, respectively, when considered as a marginal effect in permutational analysis. Multidimensional scaling (MDS) and GENELAND Bayesian clustering suggested that populations infecting wild plants (T. domingensis and S. halepense) were more structured locally than those affecting cultivated maize. In S. halepense, significant Isolation By Distance (IBD) indicated that this factor could explain genetic differentiation of the moth populations. In T. domingensis, local population differentiation was strong but did not depend on distance. The implication of this absence of population structure in maize and the heterogeneity of population genetics patterns in wild plants are discussed in the context of the population dynamics hypothesis and population management strategies., Competing Interests: The authors have declared that no competing interests exist.
- Published
- 2020
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28. Phylogeography and Population Structure of the Mediterranean Corn Borer, Sesamia nonagrioides (Lepidoptera: Noctuidae), Across Its Geographic Range.
- Author
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Goftishu M, Assefa Y, Niba A, Fininsa C, Nyamukondiwa C, Capdevielle-Dulac C, and Le Ru BP
- Subjects
- Animals, Biological Evolution, Botswana, Ethiopia, Genetic Variation, Phylogeography, Saccharum, Moths genetics
- Abstract
Sesamia nonagrioides (Lefèbvre) (Lepidoptera: Noctuidae), is a widespread insect pest in Africa, the Middle East, and Europe. However, its pest status varies across its distribution range. It is a major pest of maize in Europe and of sugarcane in Iran. In Africa, it is a major pest of maize in West Africa but not considered as a pest in East Africa. Recent surveys conducted in 2015 recorded S. nonagrioides to be a major pest of sugarcane in Ethiopia and reported the species for the first time in Botswana, outside its known geographic range. The genetic relationship of these records with the previously recorded population of S. nonagrioides was investigated using the cytochrome oxidase subunit I region of the mitochondrial genome. In total, 113 individuals across the geographic range of the species were analyzed and 63 haplotypes were identified. Phylogenetic analysis separated the populations into two clades with no distinct geographic distribution pattern. The genetic differentiation was also not associated with host plants and geographic distances. Results of the molecular analysis revealed the long-time establishment of S. nonagrioides population in Botswana and identified the newly recorded sugarcane population from Ethiopia as part of the wild host population in the country. The phylogeographic patterns observed among population of S. nonagrioides have probably been shaped by Pleistocene's climatic oscillations and geographic range expansions from different refugia with secondary contact and admixture. Possible reasons for the host-plant expansion by the Ethiopian population are discussed.
- Published
- 2019
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29. Opposite macroevolutionary responses to environmental changes in grasses and insects during the Neogene grassland expansion.
- Author
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Kergoat GJ, Condamine FL, Toussaint EFA, Capdevielle-Dulac C, Clamens AL, Barbut J, Goldstein PZ, and Le Ru B
- Subjects
- Animals, Ecosystem, Herbivory classification, Herbivory physiology, Insecta classification, Phylogeny, Poaceae classification, Biological Evolution, Grassland, Insecta physiology, Poaceae physiology
- Abstract
The rise of Neogene C
4 grasslands is one of the most drastic changes recently experienced by the biosphere. A central - and widely debated - hypothesis posits that Neogene grasslands acted as a major adaptive zone for herbivore lineages. We test this hypothesis with a novel model system, the Sesamiina stemborer moths and their associated host-grasses. Using a comparative phylogenetic framework integrating paleoenvironmental proxies we recover a negative correlation between the evolutionary trajectories of insects and plants. Our results show that paleoenvironmental changes generated opposing macroevolutionary dynamics in this insect-plant system and call into question the role of grasslands as a universal adaptive cradle. This study illustrates the importance of implementing environmental proxies in diversification analyses to disentangle the relative impacts of biotic and abiotic drivers of macroevolutionary dynamics.- Published
- 2018
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30. α-Amylase Mediates Host Acceptance in the Braconid Parasitoid Cotesia flavipes.
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Bichang'a G, Da Lage JL, Capdevielle-Dulac C, Zivy M, Balliau T, Sambai K, Le Ru B, Kaiser L, Juma G, Maina ENM, and Calatayud PA
- Subjects
- Animals, Arthropod Antennae drug effects, Arthropod Antennae physiology, Chromatography, High Pressure Liquid, Electrophoresis, Polyacrylamide Gel, Host-Parasite Interactions, Insect Proteins analysis, Insect Proteins metabolism, Larva drug effects, Larva physiology, Oviposition, Tandem Mass Spectrometry, Wasps growth & development, Zea mays metabolism, alpha-Amylases pharmacology, Wasps physiology, Zea mays parasitology, alpha-Amylases metabolism
- Abstract
Foraging parasitoids use chemical signals in host recognition and selection processes. Although, the volatiles play a relevant role in the localization by parasitoids of their hosts feeding on plants, the host identification process for acceptance occurs mainly during contact between the parasitoid and its host where host products related to feeding activities, fecal pellets and oral secretions, play a crucial role. The purpose of this study was to identify the nature of the contact kairomone(s) that mediate the acceptance for oviposition of the parasitoid Cotesia flavipes Cameron (Hymenoptera, Braconidae), which was released in Kenya in 1993 to control the invasive crambid Chilo partellus (Swinhoe). Using host and non-hosts of C. flavipes, we showed that it is mainly the oral secretions of the larvae that harbour the active compound(s) that mediate host acceptance for oviposition by C. flavipes. Using an integration of behavioral observations and biochemical approaches, the active compound of the oral secretions was identified as an α-amylase. Using synthetized α-amylases from Drosophila melanogaster (an insect model for which syntheses of active and inactive α-amylases are available), we observed that the conformation of the enzyme rather than its catalytic site as well as its substrate and its degradation product is responsible for host acceptance and oviposition mediation of C. flavipes females. The results suggest that the α-amylase from oral secretions of the caterpillar host is a good candidate for an evolutionary solution to host acceptance for oviposition in C. flavipes.
- Published
- 2018
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31. Systematics and biology of Cotesia typhae sp. n. (Hymenoptera, Braconidae, Microgastrinae), a potential biological control agent against the noctuid Mediterranean corn borer, Sesamia nonagrioides .
- Author
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Kaiser L, Fernandez-Triana J, Capdevielle-Dulac C, Chantre C, Bodet M, Kaoula F, Benoist R, Calatayud PA, Dupas S, Herniou EA, Jeannette R, Obonyo J, Silvain JF, and Ru BL
- Abstract
Many parasitoid species are subjected to strong selective pressures from their host, and their adaptive response may result in the formation of genetically differentiated populations, called host races. When environmental factors and reproduction traits prevent gene flow, host races become distinct species. Such a process has recently been documented within the Cotesia flavipes species complex, all of which are larval parasitoids of moth species whose larvae are stem borers of Poales. A previous study on the African species C. sesamiae , incorporating molecular, ecological and biological data on various samples, showed that a particular population could be considered as a distinct species, because it was specialized at both host ( Sesamia nonagrioides ) and plant ( Typha domingensis ) levels, and reproductively isolated from other C. sesamiae . Due to its potential for the biological control of S. nonagrioides , a serious corn pest in Mediterranean countries and even in Iran, we describe here Cotesia typhae Fernandez-Triana sp. n. The new species is characterized on the basis of morphological, molecular, ecological and geographical data, which proved to be useful for future collection and rapid identification of the species within the species complex. Fecundity traits and parasitism success on African and European S. nonagrioides populations, estimated by laboratory studies, are also included.
- Published
- 2017
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32. High Triatoma brasiliensis Densities and Trypanosoma cruzi Prevalence in Domestic and Peridomestic Habitats in the State of Rio Grande do Norte, Brazil: The Source for Chagas Disease Outbreaks?
- Author
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Lilioso M, Folly-Ramos E, Rocha FL, Rabinovich J, Capdevielle-Dulac C, Harry M, Marcet PL, Costa J, and Almeida CE
- Subjects
- Animals, Brazil epidemiology, Chagas Disease transmission, DNA, Protozoan isolation & purification, Ecosystem, Humans, Insect Vectors parasitology, Population Density, Prevalence, Chagas Disease epidemiology, Disease Outbreaks, Triatoma parasitology, Trypanosoma cruzi isolation & purification
- Abstract
AbstractA total of 2,431 Triatoma brasiliensis were collected from 39 populations of Paraíba (PB) and Rio Grande do Norte (RN) states, Brazil. In PB, Trypanosoma cruzi infection was not detected in either peridomestic or domestic vector populations. In contrast, in RN, T. brasiliensis was detected with high parasite prevalence in these ecotopes (30.7-40.0%). Moreover, peridomicile insect population densities were more than double the average densities of all other settings evaluated (19.17 versus < 8.94 triatomine/man-hour). Genotyped parasites evidenced a mix of T. cruzi lineages circulating in both peridomestic and sylvatic populations. Although vector control efforts have dramatically decreased Chagas disease transmission to humans, recent outbreaks have been detected in four municipalities of RN state. Our results clearly evidence a worrisome proximity between infected vectors and humans in RN. Indeed, finding of infected T. brasiliensis inside homes is routinely recorded by local vector control surveillance staff around the outbreak area, challenging the current and conventional view that vector transmissions are controlled in northeastern Brazil. This scenario calls for strengthening vector control surveillance and interventions to prevent further Chagas transmission, especially in RN State.
- Published
- 2017
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33. Relationships of Reproductive Traits With the Phylogeny of the African Noctuid Stem Borers.
- Author
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Calatayud PA, Dupas S, Frérot B, Genestier G, Ahuya P, Capdevielle-Dulac C, and Le Ru B
- Abstract
The display of the reproductive behavior in most noctuid Lepidoptera follows a diel periodicity and is limited to a precise period of either the day or the night. These behavioral traits and the sex pheromone chemistry can be species specific and thus might be linked to the phylogeny. The objective of this study was to test the relationship of these reproductive traits with phylogeny. The study was undertaken using eight closely related species of noctuid stem borers, which are easy to rear under artificial conditions, namely, Busseola fusca , B. nairobica , B . sp. nr. segeta , Manga melanodonta , M . sp. nr. nubifera , Pirateolea piscator , Sesamia calamistis , and S. nonagrioides . For each species, the adult emergence period, the mating time, and the oviposition period were estimated, referred as biological traits. The components of the sex pheromones emitted by the females of each species were also analyzed by gas chromatography-mass spectrometry. Among the biological traits measured, only those linked to the oviposition pattern (timing and egg loads per night) were significantly correlated with the phylogeny of these species. For the sex pheromone components, among the 13 components identified in all species, only four, namely, Z9-tetradecenyl acetate (Z9-TDA), Z11-TDA, E11-TDA, and Z11-hexadecenyl acetate (Z11-HDA), showed the highest significant correlations with the phylogeny. These results suggest that among the different reproductive traits evaluated, only few are phylogenetically constrained. Their involvement in the reinforcement of ecological speciation in noctuid stem borers is discussed., Competing Interests: Authors disclose no potential conflicts of interest.
- Published
- 2016
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34. Ongoing ecological speciation in Cotesia sesamiae, a biological control agent of cereal stem borers.
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Kaiser L, Le Ru BP, Kaoula F, Paillusson C, Capdevielle-Dulac C, Obonyo JO, Herniou EA, Jancek S, Branca A, Calatayud PA, Silvain JF, and Dupas S
- Abstract
To develop efficient and safe biological control, we need to reliably identify natural enemy species, determine their host range, and understand the mechanisms that drive host range evolution. We investigated these points in Cotesia sesamiae, an African parasitic wasp of cereal stem borers. Phylogenetic analyses of 74 individual wasps, based on six mitochondrial and nuclear genes, revealed three lineages. We then investigated the ecological status (host plant and host insect ranges in the field, and host insect suitability tests) and the biological status (cross-mating tests) of the three lineages. We found that one highly supported lineage showed all the hallmarks of a cryptic species. It is associated with one host insect, Sesamia nonagrioides, and is reproductively isolated from the other two lineages by pre- and postmating barriers. The other two lineages had a more variable phylogenetic support, depending on the set of genes; they exhibited an overlapping and diversified range of host species and are not reproductively isolated from one another. We discuss the ecological conditions and mechanisms that likely generated this ongoing speciation and the relevance of this new specialist taxon in the genus Cotesia for biological control.
- Published
- 2015
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35. A revision of the genus Conicofrontia Hampson (Lepidoptera, Noctuidae, Apameini, Sesamiina), with description of a new species: new insights from morphological, ecological and molecular data.
- Author
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Le Ru B, Capdevielle-Dulac C, Conlong D, Pallangyo B, Van Den Berg J, Ong'amo G, and Kergoat GJ
- Subjects
- Animal Distribution, Animal Structures anatomy & histology, Animal Structures growth & development, Animals, Body Size, Ecosystem, Female, Male, Moths anatomy & histology, Moths growth & development, Organ Size, Phylogeny, Moths classification, Moths genetics
- Abstract
The aim of this study was to review the species of Conicofrontia Hampson, a small genus of noctuid stem borers (Noctuidae, Apameini) that is distributed in East and Southeastern Africa. We review the morphology of species in this group and provide new diagnoses and ecological data for five species. The following taxonomic changes are proposed: Hygrostola dallolmoi (Berio, 1973) (= Conicofrontia dallolmoi Berio, 1973) comb. n. and Conicofrontia bipartita (Hampson, 1910) (= Phragmatiphila bipartita Hampson, 1910) comb. n., stat. rev. One new species is also described: C. lilomwa, sp. n. from Tanzania. Wing patterns as well as male and female genitalia of the five species are described and illustrated. Finally we carried out molecular phylogenetic and molecular species delimitation analyses on a multi-marker dataset of 31 specimens and 15 species, including the five mentioned species. The results of molecular analyses provide a clear support for the proposed taxonomical changes.
- Published
- 2015
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36. Food searching behaviour of a Lepidoptera pest species is modulated by the foraging gene polymorphism.
- Author
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Chardonnet F, Capdevielle-Dulac C, Chouquet B, Joly N, Harry M, Le Ru B, Silvain JF, and Kaiser L
- Subjects
- Alleles, Animals, Base Sequence, Cyclic GMP analogs & derivatives, Cyclic GMP physiology, Larva physiology, Molecular Sequence Data, Moths physiology, Phenotype, Polymorphism, Genetic, Appetitive Behavior physiology, Locomotion, Moths genetics
- Abstract
The extent of damage to crop plants from pest insects depends on the foraging behaviour of the insect's feeding stage. Little is known, however, about the genetic and molecular bases of foraging behaviour in phytophagous pest insects. The foraging gene (for), a candidate gene encoding a PKG-I, has an evolutionarily conserved function in feeding strategies. Until now, for had never been studied in Lepidoptera, which includes major pest species. The cereal stem borer Sesamia nonagrioides is therefore a relevant species within this order with which to study conservation of and polymorphism in the for gene, and its role in foraging - a behavioural trait that is directly associated with plant injuries. Full sequencing of for cDNA in S. nonagrioides revealed a high degree of conservation with other insect taxa. Activation of PKG by a cGMP analogue increased larval foraging activity, measured by how frequently larvae moved between food patches in an actimeter. We found one non-synonymous allelic variation in a natural population that defined two allelic variants. These variants presented significantly different levels of foraging activity, and the behaviour was positively correlated to gene expression levels. Our results show that for gene function is conserved in this species of Lepidoptera, and describe an original case of a single nucleotide polymorphism associated with foraging behaviour variation in a pest insect. By illustrating how variation in this single gene can predict phenotype, this work opens new perspectives into the evolutionary context of insect adaptation to plants, as well as pest management., (© 2014. Published by The Company of Biologists Ltd.)
- Published
- 2014
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37. Similar differentiation patterns between PBP expression levels and pheromone component ratios in two populations of Sesamia nonagrioides.
- Author
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Glaser N, Frérot B, Leppik E, Monsempes C, Capdevielle-Dulac C, Le Ru B, Lecocq T, Harry M, Jacquin-Joly E, and Calatayud PA
- Subjects
- Animals, Female, France, Gene Expression, Geography, Kenya, Male, Moths genetics, Phylogeny, Real-Time Polymerase Chain Reaction, Carrier Proteins metabolism, Insect Proteins metabolism, Moths metabolism, Sex Attractants metabolism
- Abstract
Pheromone-binding proteins (PBPs) are thought to contribute to the specificity of the pheromone detection system through an initial selective binding with pheromone molecules. Here, we report different expression levels of PBP transcripts in the antennae of two populations of the stemborer Sesamia nonagrioides (Lepidoptera: Noctuidae), one collected in Europe and one in sub-Saharan Africa. The three PBP transcripts previously identified in this species were found to be expressed in both male and female antennae. Whereas PBP3 did not show any differential expression, PBP1 and PBP2 appeared to be expressed differently according to the population origin and sex. Simultaneously, we measured and compared the ratio of the three components of the S. nonagrioides pheromone blend (Z11-16:Ac; Z11-16:OH; Z11-16:Ald) in females of the two populations. The ratio of Z11-16:OH and Z11-16:Ald varied significantly according to the population origin of this species. Cluster analyses revealed similar differentiation patterns between PBP1 and PBP2 expression levels and the ratios of Z11-16:OH and Z11-16:Ald. Different female sexual signals may thus correspond to different male reception systems, which are adjusted by the PBP expression levels, thereby ensuring optimal communication within populations.
- Published
- 2014
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38. Genetic Diversity and Population Structure of Busseola segeta Bowden (Lepidoptera; Noctuidae): A Case Study of Host Use Diversification in Guineo-Congolian Rainforest Relic Area, Kenya.
- Author
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Ong'amo GO, Ru BP, Campagne P, Branca A, Calatayud PA, Capdevielle-Dulac C, and Silvain JF
- Abstract
Habitat modification and fragmentation are considered as some of the factors that drive organism distribution and host use diversification. Indigenous African stem borer pests are thought to have diversified their host ranges to include maize [Zea mays L.] and sorghum [Sorghum bicolor (L.) Moench] in response to their increased availability through extensive cultivation. However, management efforts have been geared towards reducing pest populations in the cultivated fields with few attempts to understand possible evolution of "new" pest species. Recovery and growing persistence of Busseola segeta Bowden on maize (Zea mays L.) in Kakamega called for studies on the role of wild host plants on the invasion of crops by wild borer species. A two-year survey was carried out in a small agricultural landscape along the edge of Kakamega forest (Kenya) to assess host range and population genetic structure of B. segeta. The larvae of B. segeta were found on nine different plant species with the majority occurring on maize and sorghum. Of forty cytochrome b haplotypes identified, twenty-three occurred in both wild and cultivated habitats. The moths appear to fly long distances across the habitats with genetic analyses revealing weak differentiation between hosts in different habitats (FST = 0.016; p = 0.015). However, there was strong evidence of variation in genetic composition between growing seasons in the wild habitat (FST = 0.060; p < 0.001) with emergence or disappearance of haplotypes between habitats. Busseola segeta is an example of a phytophagous insect that utilizes plants with a human induced distribution range, maize, but does not show evidence of host race formation or reduction of gene flow among populations using different hosts. However, B. segeta is capable of becoming an important pest in the area and the current low densities may be attributed to the general low infestation levels and presence of a wide range of alternative hosts in the area.
- Published
- 2012
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39. Palaeoenvironmental shifts drove the adaptive radiation of a noctuid stemborer tribe (Lepidoptera, Noctuidae, Apameini) in the miocene.
- Author
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Toussaint EF, Condamine FL, Kergoat GJ, Capdevielle-Dulac C, Barbut J, Silvain JF, and Le Ru BP
- Subjects
- Adaptation, Biological, Animals, Bayes Theorem, Climate Change, Ecosystem, Fossils, Herbivory, Likelihood Functions, Models, Genetic, Phylogeny, Phylogeography, Poaceae, Animal Distribution, Genetic Speciation, Moths genetics
- Abstract
Between the late Oligocene and the early Miocene, climatic changes have shattered the faunal and floral communities and drove the apparition of new ecological niches. Grassland biomes began to supplant forestlands, thus favouring a large-scale ecosystem turnover. The independent adaptive radiations of several mammal lineages through the evolution of key innovations are classic examples of these changes. However, little is known concerning the evolutionary history of other herbivorous groups in relation with this modified environment. It is especially the case in phytophagous insect communities, which have been rarely studied in this context despite their ecological importance. Here, we investigate the phylogenetic and evolutionary patterns of grass-specialist moths from the species-rich tribe Apameini (Lepidoptera, Noctuidae). The molecular dating analyses carried out over the corresponding phylogenetic framework reveal an origin around 29 million years ago for the Apameini. Ancestral state reconstructions indicate (i) a potential Palaearctic origin of the tribe Apameini associated with a major dispersal event in Afrotropics for the subtribe Sesamiina; (ii) a recent colonization from Palaearctic of the New World and Oriental regions by several independent lineages; and (iii) an ancestral association of the tribe Apameini over grasses (Poaceae). Diversification analyses indicate that diversification rates have not remained constant during the evolution of the group, as underlined by a significant shift in diversification rates during the early Miocene. Interestingly, this age estimate is congruent with the development of grasslands at this time. Rather than clade ages, variations in diversification rates among genera better explain the current differences in species diversity. Our results underpin a potential adaptive radiation of these phytophagous moths with the family Poaceae in relation with the major environmental shifts that have occurred in the Miocene.
- Published
- 2012
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40. Permanent genetic resources added to Molecular Ecology Resources Database 1 August 2011-30 September 2011.
- Author
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A'Hara SW, Amouroux P, Argo EE, Avand-Faghih A, Barat A, Barbieri L, Bert TM, Blatrix R, Blin A, Bouktila D, Broome A, Burban C, Capdevielle-Dulac C, Casse N, Chandra S, Cho KJ, Cottrell JE, Crawford CR, Davis MC, Delatte H, Desneux N, Djieto-Lordon C, Dubois MP, El-Mergawy RA, Gallardo-Escárate C, Garcia M, Gardiner MM, Guillemaud T, Haye PA, Hellemans B, Hinrichsen P, Jeon JH, Kerdelhué C, Kharrat I, Kim KH, Kim YY, Kwan YS, Labbe EM, LaHood E, Lee KM, Lee WO, Lee YH, Legoff I, Li H, Lin CP, Liu SS, Liu YG, Long D, Maes GE, Magnoux E, Mahanta PC, Makni H, Makni M, Malausa T, Matura R, McKey D, McMillen-Jackson AL, Méndez MA, Mezghani-Khemakhem M, Michel AP, Paul M, Muriel-Cunha J, Nibouche S, Normand F, Palkovacs EP, Pande V, Parmentier K, Peccoud J, Piatscheck F, Puchulutegui C, Ramos R, Ravest G, Richner H, Robbens J, Rochat D, Rousselet J, Saladin V, Sauve M, Schlei O, Schultz TF, Scobie AR, Segovia NI, Seyoum S, Silvain JF, Tabone E, Van Houdt JK, Vandamme SG, Volckaert FA, Wenburg J, Willis TV, Won YJ, Ye NH, Zhang W, and Zhang YX
- Subjects
- Animals, Microsatellite Repeats, Molecular Sequence Data, Databases, Genetic, Fishes genetics, Insecta genetics, Invertebrates genetics, Pinus genetics
- Abstract
This article documents the addition of 299 microsatellite marker loci and nine pairs of single-nucleotide polymorphism (SNP) EPIC primers to the Molecular Ecology Resources (MER) Database. Loci were developed for the following species: Alosa pseudoharengus, Alosa aestivalis, Aphis spiraecola, Argopecten purpuratus, Coreoleuciscus splendidus, Garra gotyla, Hippodamia convergens, Linnaea borealis, Menippe mercenaria, Menippe adina, Parus major, Pinus densiflora, Portunus trituberculatus, Procontarinia mangiferae, Rhynchophorus ferrugineus, Schizothorax richardsonii, Scophthalmus rhombus, Tetraponera aethiops, Thaumetopoea pityocampa, Tuta absoluta and Ugni molinae. These loci were cross-tested on the following species: Barilius bendelisis, Chiromantes haematocheir, Eriocheir sinensis, Eucalyptus camaldulensis, Eucalyptus cladocalix, Eucalyptus globulus, Garra litaninsis vishwanath, Garra para lissorhynchus, Guindilla trinervis, Hemigrapsus sanguineus, Luma chequen. Guayaba, Myrceugenia colchagüensis, Myrceugenia correifolia, Myrceugenia exsucca, Parasesarma plicatum, Parus major, Portunus pelagicus, Psidium guayaba, Schizothorax richardsonii, Scophthalmus maximus, Tetraponera latifrons, Thaumetopoea bonjeani, Thaumetopoea ispartensis, Thaumetopoea libanotica, Thaumetopoea pinivora, Thaumetopoea pityocampa ena clade, Thaumetopoea solitaria, Thaumetopoea wilkinsoni and Tor putitora. This article also documents the addition of nine EPIC primer pairs for Euphaea decorata, Euphaea formosa, Euphaea ornata and Euphaea yayeyamana., (© 2011 Blackwell Publishing Ltd.)
- Published
- 2012
- Full Text
- View/download PDF
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