Gene flow throughout the evolutionary history of a colour polymorphic and generalist clownfish.

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State: Public
Version: Final published version
License: CC BY-NC 4.0
Serval ID
serval:BIB_62B3CDA8C5C0
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Gene flow throughout the evolutionary history of a colour polymorphic and generalist clownfish.
Journal
Molecular ecology
Author(s)
Schmid S., Bachmann Salvy M., Garcia Jimenez A., Bertrand JAM, Cortesi F., Heim S., Huyghe F., Litsios G., Marcionetti A., O'Donnell J.L., Riginos C., Tettamanti V., Salamin N.
ISSN
1365-294X (Electronic)
ISSN-L
0962-1083
Publication state
Published
Issued date
07/2024
Peer-reviewed
Oui
Volume
33
Number
14
Pages
e17436
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Abstract
Even seemingly homogeneous on the surface, the oceans display high environmental heterogeneity across space and time. Indeed, different soft barriers structure the marine environment, which offers an appealing opportunity to study various evolutionary processes such as population differentiation and speciation. Here, we focus on Amphiprion clarkii (Actinopterygii; Perciformes), the most widespread of clownfishes that exhibits the highest colour polymorphism. Clownfishes can only disperse during a short pelagic larval phase before their sedentary adult lifestyle, which might limit connectivity among populations, thus facilitating speciation events. Consequently, the taxonomic status of A. clarkii has been under debate. We used whole-genome resequencing data of 67 A. clarkii specimens spread across the Indian and Pacific Oceans to characterize the species' population structure, demographic history and colour polymorphism. We found that A. clarkii spread from the Indo-Pacific Ocean to the Pacific and Indian Oceans following a stepping-stone dispersal and that gene flow was pervasive throughout its demographic history. Interestingly, colour patterns differed noticeably among the Indonesian populations and the two populations at the extreme of the sampling distribution (i.e. Maldives and New Caledonia), which exhibited more comparable colour patterns despite their geographic and genetic distances. Our study emphasizes how whole-genome studies can uncover the intricate evolutionary past of wide-ranging species with diverse phenotypes, shedding light on the complex nature of the species concept paradigm.
Keywords
Gene Flow, Animals, Perciformes/genetics, Perciformes/classification, Genetics, Population, Pacific Ocean, Pigmentation/genetics, Indian Ocean, Biological Evolution, Whole Genome Sequencing, Color, fish, genomics/proteomics, phylogeography, population genetics‐empirical
Pubmed
Web of science
Open Access
Yes
Create date
17/06/2024 15:43
Last modification date
16/07/2024 7:14
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