edoc-vmtest

Repeated Lake-Stream Divergence in Stickleback Life History within a Central European Lake Basin

Moser, Dario and Roesti, Marius and Berner, Daniel. (2012) Repeated Lake-Stream Divergence in Stickleback Life History within a Central European Lake Basin. PloS one, Vol. 7, H. 12 , e50620.

[img]
Preview
PDF - Published Version
Available under License CC BY (Attribution).

378Kb

Official URL: http://edoc.unibas.ch/dok/A6070377

Downloads: Statistics Overview

Abstract

Life history divergence between populations inhabiting ecologically distinct habitats might be a potent source of reproductive isolation, but has received little attention in the context of speciation. We here test for life history divergence between threespine stickleback inhabiting Lake Constance (Central Europe) and multiple tributary streams. Otolith analysis shows that lake fish generally reproduce at two years of age, while their conspecifics in all streams have shifted to a primarily annual life cycle. This divergence is paralleled by a striking and consistent reduction in body size and fecundity in stream fish relative to lake fish. Stomach content analysis suggests that life history divergence might reflect a genetic or plastic response to pelagic versus benthic foraging modes in the lake and the streams. Microsatellite and mitochondrial markers further reveal that life history shifts in the different streams have occurred independently following the colonization by Lake Constance stickleback, and indicate the presence of strong barriers to gene flow across at least some of the lake-stream habitat transitions. Given that body size is known to strongly influence stickleback mating behavior, these barriers might well be related to life history divergence.
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Integrative Biologie > Evolutionary Biology (Salzburger)
UniBasel Contributors:Salzburger, Walter
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Public Library of Science
ISSN:1932-6203
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Related URLs:
Identification Number:
edoc DOI:
Last Modified:31 Dec 2015 10:54
Deposited On:25 Oct 2013 08:33

Repository Staff Only: item control page