Temporal stability of genetic diversity and differentiation in the three-spined stickleback (Gasterosteus aculeatus)

Show full item record



Permalink

http://hdl.handle.net/10138/160265

Citation

DeFaveri , J & Merilä , J 2015 , ' Temporal stability of genetic diversity and differentiation in the three-spined stickleback (Gasterosteus aculeatus) ' , PLoS One , vol. 10 , no. 4 , e0123891 . https://doi.org/10.1371/journal.pone.0123891

Title: Temporal stability of genetic diversity and differentiation in the three-spined stickleback (Gasterosteus aculeatus)
Author: DeFaveri, Jacquelin; Merilä, Juha
Contributor: University of Helsinki, Biosciences
University of Helsinki, Biosciences
Date: 2015-04-08
Language: eng
Number of pages: 19
Belongs to series: PLoS One
ISSN: 1932-6203
URI: http://hdl.handle.net/10138/160265
Abstract: Temporal variation in allele frequencies, whether caused by deterministic or stochastic forces, can inform us about interesting demographic and evolutionary phenomena occurring in wild populations. In spite of the continued surge of interest in the genetics of three-spined stickleback (Gasterosteus aculeatus) populations, little attention has been paid towards the temporal stability of allele frequency distributions, and whether there are consistent differences in effective size (Ne) of local populations. We investigated temporal stability of genetic variability and differentiation in 15 microsatellite loci within and among eight collection sites of varying habitat type, surveyed twice over a six-year time period. In addition, Nes were estimated with the expectation that they would be lowest in isolated ponds, intermediate in larger lakes and largest in open marine sites. In spite of the marked differences in genetic variability and differentiation among the study sites, the temporal differences in allele frequencies, as well as measures of genetic diversity and differentiation, were negligible. Accordingly, the Ne estimates were temporally stable, but tended to be lower in ponds than in lake or marine habitats. Hence, we conclude that allele frequencies in putatively neutral markers in three-spined sticklebacks seem to be temporally stable -at least over periods of few generations - across a wide range of habitat types differing markedly in levels of genetic variability, effective population size and gene flow.
Subject: 1181 Ecology, evolutionary biology
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
journal.pone.0123891.PDF 583.1Kb PDF View/Open

This item appears in the following Collection(s)

Show full item record