Using conservation genetics to inform reintroduction of the endangered Mottled Duskywing (Erynnis martialis)
Abstract
Habitat loss and climate change have caused declines in species diversity and abundance globally, including in butterflies which are important components of many ecosystems. Reintroductions are increasingly used to reverse diversity loss but are most effective when informed using genetics. I developed 24 microsatellites and characterized genetic structure and diversity of the endangered Mottled Duskywing (Erynnis martialis) in Ontario and neighbouring provinces and states. These were used to inform a planned reintroduction in Ontario. Populations had moderate levels of genetic diversity, however all but the largest populations may be subject to appreciable levels of genetic drift. Populations more than 8 km apart appear to be isolated from each other. My work forms part of a larger effort to achieve the overall recovery of the species in Ontario. Tools I developed may be used to inform future reintroductions of the species, and to monitor status of introduced and extant populations.