Genomics Reveal Admixture and Unexpected Patterns of Diversity in a Parapatric Pair of Butterflies.

Details

Serval ID
serval:BIB_EDF21675F09C
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Genomics Reveal Admixture and Unexpected Patterns of Diversity in a Parapatric Pair of Butterflies.
Journal
Genes
Author(s)
Tahami M.S., Dincă V., Lee K.M., Vila R., Joshi M., Heikkilä M., Dapporto L., Schmid S., Huemer P., Mutanen M.
ISSN
2073-4425 (Electronic)
ISSN-L
2073-4425
Publication state
Published
Issued date
17/12/2021
Peer-reviewed
Oui
Volume
12
Number
12
Pages
2009
Language
english
Notes
Publication types: Journal Article
Publication Status: epublish
Abstract
We studied the evolutionary relationship of two widely distributed parapatric butterfly species, Melitaea athalia and Melitaea celadussa, using the ddRAD sequencing approach, as well as genital morphology and mtDNA data. M. athalia was retrieved as paraphyletic with respect to M. celadussa. Several cases of mito-nuclear discordance and morpho-genetic mismatch were found in the contact zone. A strongly diverged and marginally sympatric clade of M. athalia from the Balkans was revealed. An in-depth analysis of genomic structure detected high levels of admixture between M. athalia and M. celadussa at the contact zone, though not reaching the Balkan clade. The demographic modelling of populations supported the intermediate genetic make-up of European M. athalia populations with regards to M. celadussa and the Balkan clade. However, the dissimilarity matrix of genotype data (PCoA) suggested the Balkan lineage having a genetic component that is unrelated to the athalia-celadussa group. Although narrowly sympatric, almost no signs of gene flow were found between the main M. athalia group and the Balkan clade. We propose two possible scenarios on the historical evolution of our model taxa and the role of the last glacial maximum in shaping their current distribution. Finally, we discuss the complexities regarding the taxonomic delimitation of parapatric taxa.
Keywords
Melitaea, ddRAD sequencing, genomic admixture, parapatry, paraphyletic species, species delimitation
Pubmed
Web of science
Open Access
Yes
Create date
04/01/2022 9:49
Last modification date
21/07/2022 6:37
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