Differences in male coloration are predicted by divergent sexual selection between populations of a cichlid fish

Selz, Oliver; Thommen, Rahel; Pierotti, Michele; Anaya-Rojas, Jaime Mauricio; Seehausen, Ole (2016). Differences in male coloration are predicted by divergent sexual selection between populations of a cichlid fish. Proceedings of the Royal Society. Series B - biological sciences, 283(1830) Royal Society of London 10.1098/rspb.2016.0172

[img] Text
Selz et al-2016- R Soc B.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (583kB) | Request a copy

Female mating preferences can influence both intraspecific sexual selection and interspecific reproductive isolation, and have therefore been proposed to play a central role in speciation. Here, we investigate experimentally in the African cichlid fish Pundamilia nyererei if differences in male coloration between three para-allopatric populations (i.e. island populations with gene flow) of P. nyererei are predicted by differences in sexual selection by female mate choice between populations. Second, we investigate if female mating preferences are based on the same components of male coloration and go in the same direction when females choose among males of their own population, their own and other conspecific populations and a closely related para-allopatric sister-species, P. igneopinnis. Mate-choice experiments revealed that females of the three populations mated species-assortatively, that populations varied in their extent of population-assortative mating and that females chose among males of their own population based on different male colours. Females of different populations exerted directional intrapopulation sexual selection on different male colours, and these differences corresponded in two of the populations to the observed differences in male coloration between the populations. Our results suggest that differences in male coloration between populations of P. nyererei can be explained by divergent sexual selection and that population-assortative mating may directly result from intrapopulation sexual selection.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Ecology and Evolution (IEE)
08 Faculty of Science > Department of Biology > Institute of Ecology and Evolution (IEE) > Aquatic Ecology

UniBE Contributor:

Selz, Oliver; Thommen, Rahel; Pierotti, Michele; Anaya-Rojas, Jaime Mauricio and Seehausen, Ole

Subjects:

500 Science > 570 Life sciences; biology

ISSN:

0962-8452

Publisher:

Royal Society of London

Language:

English

Submitter:

Marcel Häsler

Date Deposited:

18 Jul 2016 12:14

Last Modified:

18 Jul 2016 12:14

Publisher DOI:

10.1098/rspb.2016.0172

PubMed ID:

27147097

BORIS DOI:

10.7892/boris.83569

URI:

https://boris.unibe.ch/id/eprint/83569

Actions (login required)

Edit item Edit item
Provide Feedback