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Loss of genetic variability in reintroduced roach (Rutilus rutilus) populations |
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| Authors: | M Demandt † M Björklund ‡ |
| Institution: | Department of Animal Ecology, Evolutionary Biology Centre, Uppsala University, Norbyvägen 18D, SE-752 36 Uppsala, Sweden; and Integrative Ecology Unit, Department of Biological and Environmental Sciences, P. O. Box 65, 00014 Helsinki University, Finland |
| Abstract: | Genetic variation at five microsatellite loci and in mtDNA was surveyed in reintroduced and 'control' populations of roach ( Rutilus rutilus ) in Sweden. Microsatellite allelic richness and allele size ranges were significantly reduced in reintroduced populations, and mtDNA diversity was nearly significantly reduced in reintroduced populations. These measures of genetic variability were strongly correlated with lake characteristics that influence population size and food availability. |
| Keywords: | genetic variation lake acidification population bottleneck reintroductions roach |