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Divergent evolution of male aggressive behaviour : another reproductive isolation barrier in extremophile poeciliid fishes?
- Reproductive isolation among locally adapted populations may arise when immigrants from foreign habitats are selected against via natural or (inter-)sexual selection (female mate choice). We asked whether also intrasexual selection through male-male competition could promote reproductive isolation among populations of poeciliid fishes that are locally adapted to extreme environmental conditions [i.e., darkness in caves and/or toxic hydrogen sulphide (H(2)S)]. We found strongly reduced aggressiveness in extremophile P. oecilia mexicana, and darkness was the best predictor for the evolutionary reduction of aggressiveness, especially when combined with presence of H(2)S. We demonstrate that reduced aggression directly translates into migrant males being inferior when paired with males from non-sulphidic surface habitats. By contrast, the phylogenetically old sulphur endemic P. sulphuraria from another sulphide spring area showed no overall reduced aggressiveness, possibly indicating evolved mechanisms to better cope with H(2)S.
Author: | David BierbachORCiDGND, Moritz Klein, Vanessa Sassmannshausen, Ingo Schlupp, Rüdiger RieschORCiD, Jakob Parzefall, Martin PlathORCiDGND |
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URN: | urn:nbn:de:hebis:30:3-251910 |
DOI: | https://doi.org/10.1155/2012/148745 |
ISSN: | 2090-052X |
Pubmed Id: | https://pubmed.ncbi.nlm.nih.gov/22315695 |
Parent Title (English): | International journal of evolutionary biology |
Publisher: | Sage-Hindawi |
Place of publication: | London [u.a.] |
Document Type: | Article |
Language: | English |
Date of Publication (online): | 2012/06/12 |
Date of first Publication: | 2011/11/23 |
Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
Release Date: | 2012/06/12 |
Volume: | 2012 |
Issue: | Article ID 148745 |
Page Number: | 14 |
HeBIS-PPN: | 357448782 |
Institutes: | Biowissenschaften / Institut für Ökologie, Evolution und Diversität |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 59 Tiere (Zoologie) / 590 Tiere (Zoologie) |
Sammlungen: | Universitätspublikationen |
Sammlung Biologie / Sondersammelgebiets-Volltexte | |
Licence (German): | ![]() |