1. ‘Becoming a species by becoming a pest’ or how two maize pests of the genusOstriniapossibly evolved through parallel ecological speciation events
- Author
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Zhen-ying Wang, Jing Li, Sergine Ponsard, Denis Bourguet, Serge Meusnier, Philippe Audiot, Réjane Streiff, Centre de Biologie pour la Gestion des Populations (UMR CBGP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Université de Montpellier (UM)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Evolution et Diversité Biologique (EDB), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), State Key Laboratory for Biology of Plant Diseases and Insect Pests, Chinese Academy of Agricultural Sciences (CAAS), Diversité, Génomes & Interactions Microorganismes - Insectes [Montpellier] (DGIMI), Institut National de la Recherche Agronomique (INRA)-Université Montpellier 2 - Sciences et Techniques (UM2)-Université de Montpellier (UM), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université de Montpellier (UM)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Actions Ponctuelles de Cooperation, Conge pour Recherches ou Conversion Thematique of Toulouse University, Agricultural Academy of Sciences in Beijing, ANR-08-STRA-0005,BIOCOSMAC,Macrocentrus cingulum comme agent de lutte biologique contre Ostrinia sp.(2008), ANR-11-IDEX-0002,UNITI,Université Fédérale de Toulouse(2011), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), State Key Laboratory for the Biology of the Plant Diseases and Insect Pests, Institute of Plant Protection, China Academy of Chinese Medicinal Sciences, Université de Montpellier (UM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de la Recherche Agronomique (INRA), ANR project BIOCOSMAC [ANR-08-STRA-05-02], project TULIP [ANR-10-LABX-41], Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université de Montpellier (UM)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), and Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées
- Subjects
Male ,[SDV.SA]Life Sciences [q-bio]/Agricultural sciences ,Sympatry ,adzuki bean borer ,European corn borer ,ostrinia ,population-structure ,Ostrinia nubilalis ,Genes, Insect ,mitochondrial DNA ,Moths ,maize ,microsatellites ,Ostrinia ,Gene flow ,furnacalis ,ecological speciation ,Cluster Analysis ,f-statistics ,phylogenetic-relationships ,[SDV.BDD]Life Sciences [q-bio]/Development Biology ,biology ,Ecology ,[SDV.BA]Life Sciences [q-bio]/Animal biology ,Ostrinia furnacalis ,differentiation ,Reproductive isolation ,Europe ,ravageur de culture ,european corn-borer ,pyrale du mais ,Gene Flow ,nubilalis hubner ,China ,Reproductive Isolation ,Genotype ,Genetic Speciation ,maïs ,flux de gènes ,french populations ,DNA, Mitochondrial ,Zea mays ,Ecological speciation ,sex-pheromone ,Genetics ,Animals ,Crosses, Genetic ,Ecology, Evolution, Behavior and Systematics ,Hybrid ,chine ,Models, Genetic ,Ostrinia scapulalis ,Chimera ,Bayes Theorem ,Sequence Analysis, DNA ,spéciation écologique ,biology.organism_classification ,sympatric host races ,sibérie orientale ,Rhopalocera ,lepidoptera ,genetic ,Microsatellite Repeats - Abstract
New agricultural pest species attacking introduced crops may evolve from pre-existing local herbivores by ecological speciation, thereby becoming a species by becoming a pest. We compare the evolutionary pathways by which two maize pests (the Asian and the European corn borers, ACB and ECB) in the genus Ostrinia (Lepidoptera, Crambidae) probably diverged from an ancestral species close to the current Adzuki bean borer (ABB). We typed larval Ostrinia populations collected on maize and dicotyledons across China and eastern Siberia, at microsatellite and mitochondrial loci. We found only two clusters: one on maize (as expected) and a single one on dicotyledons despite differences in male mid-tibia morphology, suggesting that all individuals from dicotyledons belonged to the ABB. We found evidence for migrants and hybrids on both host plant types. Hybrids suggest that field reproductive isolation is incomplete between ACB and ABB. Interestingly, a few individuals with an 'ABB-like' microsatellite profile collected on dicotyledons had 'ACB' mtDNA rather than 'ABB-like' mtDNA, whereas the reverse was never found on maize. This suggests asymmetrical gene flow directed from the ACB towards the ABB. Hybrids and backcrosses in all directions were obtained in no-choice tests. In laboratory conditions, they survived as well as parental strain individuals. In Xinjiang, we found ACB and ECB in sympatry, but no hybrids. Altogether, our results suggest that reproductive isolation between ACB and ABB is incomplete and mostly prezygotic. This points to ecological speciation as a possible evolutionary scenario, as previously found for ECB and ABB in Europe.
- Published
- 2014
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