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Biodiversity-Seminar: "When species meet again – the patterns & processes underlying secondary contact zones of Erebia butterflies"

Datum:

Ort:

WSL Birmensdorf, Englersaal

Organisator/in:

Rafael Wüest Karpati

Referent/in:

Kay Lucek

Moderator/in:

Christian Rellstab

Sprache:

English

Veranstaltungstyp:

Vorträge und Kolloquien

Zielpublikum:

Anyone interested in the topics

When species meet again – the patterns & processes underlying secondary contact zones of Erebia butterflies

Lecturer

Kay Lucek, University of Basel

Abstract

Following the last glacial retreat, many closely related species or lineages have expanded their ranges from different glacial refugia. Where they meet again, they may form zones of secondary contact depending on the level of reproductive isolation. However, despite the abundance of such contact zones, the processes that keep species apart and prevent hybridization remain often elusive. Erebia is one of the most species-rich Palearctic butterfly genera and closely related taxa or lineages often form very narrow contact zones. I will present the outcomes of secondary contact in two Erebia species pairs from the Swiss Alps that we studied by combining phenotypic, ecological and genomic data. I will show that in both cases differentiation is likely reinforced by selection but that the processes separating taxa differ between the species pairs. I will also discuss how major chromosomal rearrangements may contribute to reproductive isolation and may promote speciation in Erebia and butterflies in general.

Chair

Christian Rellstab

Link for online participation

Please send an Email to Rafael Wüest Karpati if you would like to get access to the live stream.

BD-Seminars

The Biodiversity Seminar Series (BD-Seminars) are organized by the WSL Biodiversity Center. Every two weeks, we aim to host a seminar speaker that presents research or outreach on topics relevant to the biodiversity community at WSL. The seminars are public and are usually broadcasted online.

Find out more about the WSL Biodiversity Center and a complete list of events here:

https://www.wsl.ch/en/about-wsl/programmes-and-initiatives/wsl-biodiversity-center.html

Please send an Email to Rafael Wüest Karpati if you would like to be updated on the activities of the WSL Biodiversity Center.