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Ongoing ecological speciation in Cotesia sesamiae, a biological control agent of cereal stem borers

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. Phylogen...

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Autores principales: Kaiser, Laure, Le Ru, Bruno Pierre, Kaoula, Ferial, Paillusson, Corentin, Capdevielle-Dulac, Claire, Obonyo, Julius Ochieng, Herniou, Elisabeth A, Jancek, Severine, Branca, Antoine, Calatayud, Paul-André, Silvain, Jean-François, Dupas, Stephane
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley & Sons, Ltd 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4561570/
https://www.ncbi.nlm.nih.gov/pubmed/26366198
http://dx.doi.org/10.1111/eva.12260
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author Kaiser, Laure
Le Ru, Bruno Pierre
Kaoula, Ferial
Paillusson, Corentin
Capdevielle-Dulac, Claire
Obonyo, Julius Ochieng
Herniou, Elisabeth A
Jancek, Severine
Branca, Antoine
Calatayud, Paul-André
Silvain, Jean-François
Dupas, Stephane
author_facet Kaiser, Laure
Le Ru, Bruno Pierre
Kaoula, Ferial
Paillusson, Corentin
Capdevielle-Dulac, Claire
Obonyo, Julius Ochieng
Herniou, Elisabeth A
Jancek, Severine
Branca, Antoine
Calatayud, Paul-André
Silvain, Jean-François
Dupas, Stephane
author_sort Kaiser, Laure
collection PubMed
description 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.
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spelling pubmed-45615702015-09-11 Ongoing ecological speciation in Cotesia sesamiae, a biological control agent of cereal stem borers Kaiser, Laure Le Ru, Bruno Pierre Kaoula, Ferial Paillusson, Corentin Capdevielle-Dulac, Claire Obonyo, Julius Ochieng Herniou, Elisabeth A Jancek, Severine Branca, Antoine Calatayud, Paul-André Silvain, Jean-François Dupas, Stephane Evol Appl Original Articles 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. John Wiley & Sons, Ltd 2015-09 2015-07-07 /pmc/articles/PMC4561570/ /pubmed/26366198 http://dx.doi.org/10.1111/eva.12260 Text en © 2015 The Authors. Evolutionary Applications published by John Wiley & Sons Ltd. http://creativecommons.org/licenses/by/4.0/ This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Articles
Kaiser, Laure
Le Ru, Bruno Pierre
Kaoula, Ferial
Paillusson, Corentin
Capdevielle-Dulac, Claire
Obonyo, Julius Ochieng
Herniou, Elisabeth A
Jancek, Severine
Branca, Antoine
Calatayud, Paul-André
Silvain, Jean-François
Dupas, Stephane
Ongoing ecological speciation in Cotesia sesamiae, a biological control agent of cereal stem borers
title Ongoing ecological speciation in Cotesia sesamiae, a biological control agent of cereal stem borers
title_full Ongoing ecological speciation in Cotesia sesamiae, a biological control agent of cereal stem borers
title_fullStr Ongoing ecological speciation in Cotesia sesamiae, a biological control agent of cereal stem borers
title_full_unstemmed Ongoing ecological speciation in Cotesia sesamiae, a biological control agent of cereal stem borers
title_short Ongoing ecological speciation in Cotesia sesamiae, a biological control agent of cereal stem borers
title_sort ongoing ecological speciation in cotesia sesamiae, a biological control agent of cereal stem borers
topic Original Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4561570/
https://www.ncbi.nlm.nih.gov/pubmed/26366198
http://dx.doi.org/10.1111/eva.12260
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