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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...
Autores principales: | , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley & Sons, Ltd
2015
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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. |
format | Online Article Text |
id | pubmed-4561570 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | John Wiley & Sons, Ltd |
record_format | MEDLINE/PubMed |
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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