Comparison of population genetic structures of the plant Silene stellata and its obligate pollinating seed predator moth Hadena ectypa

Annals of Botany
Juannan ZhouCharles B Fenster

Abstract

Population genetic structures and patterns of gene flow of interacting species provide important insights into the spatial scale of their interactions and the potential for local co-adaptation. We analysed the genetic structures of the plant Silene stellata and the nocturnal moth Hadena ectypa. Hadena ectypa acts as one of the important pollinators of S. stellata as well as being an obligate seed parasite on the plant. Although H. ectypa provides a substantial pollination service to S. stellata, this system is largely considered parasitic due to the severe seed predation by the Hadena larvae. Previous research on this system has found variable interaction outcomes across space, indicating the potential for a geographical selection mosaic. Using 11 microsatellite markers for S. stellata and nine markers for H. ectypa, we analysed the population genetic structure and the patterns and intensity of gene flow within and among three local populations in the Appalachians. We found no spatial genetic structure in the moth populations, while significant differentiation was detected among the local plant populations. Additionally, we observed that gene flow rates among H. ectypa populations were more uniform and that the mean gene flow r...Continue Reading

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Citations

Mar 24, 2020·Evolution; International Journal of Organic Evolution·Juannan ZhouCharles B Fenster
Oct 3, 2018·American Journal of Botany·Juannan ZhouMichele R Dudash
Mar 8, 2019·Frontiers in Plant Science·Zinan LuoHussein Abdel-Haleem

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