Segregation of species-specific male attractiveness in f(2) hybrid lake Malawi cichlid fish

Svensson, Ola; Egger, Bernd; Gricar, Boye; Woodhouse, Katie; van Oosterhout, Cock; Salzburger, Walter; Seehausen, Ole; Turner, George F (2011). Segregation of species-specific male attractiveness in f(2) hybrid lake Malawi cichlid fish. International Journal of Evolutionary Biology, 2011, p. 426179. London: Hindawi 10.4061/2011/426179

[img]
Preview
Text
426179.pdf - Published Version
Available under License Creative Commons: Attribution (CC-BY).

Download (2MB) | Preview

Among the huge radiations of haplochromine cichlid fish in Lakes Malawi and Victoria, closely related species are often reproductively isolated via female mate choice although viable fertile hybrids can be produced when females are confined only with heterospecific males. We generated F(2) hybrid males from a cross between a pair of closely related sympatric cichlid fish from Lake Malawi. Laboratory mate choice experiments using microsatellite paternity analysis demonstrated that F(2) hybrid males differed significantly in their attractiveness to females of the two parental species, indicating heritable variation in traits involved in mate choice that may contribute to reproductive isolation between these species. We found no significant correlation between male mating success and any measurement of male colour pattern. A simple quantitative genetic model of reproductive isolation suggests that there may be as few as two chromosomal regions controlling species-specific attractiveness. We propose that adaptive radiation of Lake Malawi cichlids could be facilitated by the presence of genes with major effects on mate choice and reproductive isolation.

Item Type:

Journal Article (Original Article)

Division/Institute:

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

UniBE Contributor:

Seehausen, Ole

Subjects:

500 Science > 570 Life sciences; biology

ISSN:

2090-8032

Publisher:

Hindawi

Language:

English

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 14:27

Last Modified:

10 Dec 2014 20:29

Publisher DOI:

10.4061/2011/426179

PubMed ID:

21716739

BORIS DOI:

10.7892/boris.10115

URI:

https://boris.unibe.ch/id/eprint/10115 (FactScience: 215957)

Actions (login required)

Edit item Edit item
Provide Feedback