Divergence along a steep ecological gradient in lake whitefish (Coregonus sp.)

Vonlanthen, Pascal; Roy, Denis; Hudson, Alan; Largiadèr, Carlo Rodolfo; Bittner, David; Seehausen, Ole (2009). Divergence along a steep ecological gradient in lake whitefish (Coregonus sp.). Journal of Evolutionary Biology, 22(3), pp. 498-514. Basel: Wiley 10.1111/j.1420-9101.2008.01670.x

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To understand mechanisms structuring diversity in young adaptive radiations, quantitative and unbiased information about genetic and phenotypic diversity is much needed. Here, we present the first in-depth investigation of whitefish diversity in a Swiss lake, with continuous spawning habitat sampling in both time and space. Our results show a clear cline like pattern in genetics and morphology of populations sampled along an ecological depth gradient in Lake Neuchâtel. Divergent natural selection appears to be involved in shaping this cline given that trait specific P(ST)-values are significantly higher than F(ST)-values when comparing populations caught at different depths. These differences also tend to increase with increasing differences in depth, indicating adaptive divergence along a depth gradient, which persists despite considerable gene flow between adjacent demes. It however remains unclear, whether the observed pattern is a result of currently stable selection-gene flow balance, incipient speciation, or reverse speciation due to anthropogenic habitat alteration causing two formerly divergent species to collapse into a single gene pool.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Department of Haematology, Oncology, Infectious Diseases, Laboratory Medicine and Hospital Pharmacy (DOLS) > Institute of Clinical Chemistry 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:	Hudson, Alan, Largiadèr, Carlo Rodolfo, Bittner, David, Seehausen, Ole
Subjects:	600 Technology > 610 Medicine & health
ISSN:	1010-061X
ISBN:	19170819
Publisher:	Wiley
Language:	English
Submitter:	Factscience Import
Date Deposited:	04 Oct 2013 15:05
Last Modified:	05 Dec 2022 14:20
Publisher DOI:	10.1111/j.1420-9101.2008.01670.x
PubMed ID:	19170819
Web of Science ID:	000263520900006
URI:	https://boris.unibe.ch/id/eprint/28106 (FactScience: 116758)