Ecology and Evolution (2015) 5, 2149-2161
Francisca Zepeda-Paulo, Blas Lavandero, Frédérique Mahéo, Emilie Dion, Yannick Outreman, Jean-Christophe Simon and Christian C. Figueroa (2015)
Does sex-biased dispersal account for the lack of geographic and host-associated differentiation in introduced populations of an aphid parasitoid?
Ecology and Evolution 5 (11), 2149-2161
Abstract: Host recognition and use in female parasitoids strongly relies on host fidelity, a plastic behavior which can significantly restrict the host preferences of parasitoids, thus reducing the gene flow between parasitoid populations attacking different insect hosts. However, the effect of migrant males on the genetic differentiation of populations has been frequently ignored in parasitoids, despite its known impact on gene flow between populations. Hence, we studied the extent of gene flow mediated by female and male parasitoids by assessing sibship relationships among parasitoids within and between populations, and its impact on geographic and host-associated differentiation in the aphid parasitoid Aphidius ervi. We report evidences of a high gene flow among parasitoid populations on different aphid hosts and geographic locations. The high gene flow among parasitoid populations was found to be largely male mediated, suggested by significant differences in the distribution of full-sib and paternal half-sib dyads of parasitoid populations.
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Database assignments for author(s): Christian C. Figueroa, Yannick Outreman, Francisca Zepeda-Paulo, Blas Lavandero
Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution
molecular biology - genes
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Sitobion avenae | Chile (continental) | |||
| Aphidius ervi (parasitoid) | Sitobion avenae | Chile (continental) |
