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Changes in genetic structure of North American Bythotrephes populations following invasion from Lake Ladoga, Russia
Author(s) -
Berg David J.,
Garton David W.,
Macisaac Hugh J.,
Panov Vadim E.,
Telesh Irena V.
Publication year - 2002
Publication title -
freshwater biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 156
eISSN - 1365-2427
pISSN - 0046-5070
DOI - 10.1046/j.1365-2427.2002.00805.x
Subject(s) - ecology , genetic structure , geography , beringia , founder effect , population , biology , introduced species , genetic variation , arctic , demography , biochemistry , sociology , gene , genotype , haplotype
1. We used allozyme electrophoresis to compare Bythotrephes longimanus (Crustacea: Onychopoda: Cercopagididae) from recently founded North American populations with those from native European populations, and to examine changes in genetic structure of North American populations over time. 2. The genetic structure of North American populations in 1996 was similar to that of European populations, because of the disappearance of founder effects which distinguished North American from European populations in 1989. 3. The Lake Ladoga, Russia population was more closely related to North American populations than to other European populations, consistent with non‐genetic evidence implicating Lake Ladoga as the source of North American populations. 4. Our results provide additional evidence of the presence of an invasion corridor that allows Urasian and Ponto‐Caspian species to be introduced into North American freshwater ecosystems, and show that founder effects can erode over time following establishment of invasive species.