Mitochondrial DNA Variation in the Eastern Pondmussel, Ligumia nasuta (Bivalvia: Unionoida), in the Great Lakes Region

摘要: Most freshwater mussel species in the Great Lakes colonized region from Mississippi River basin and few appear to have Atlantic coast rivers. The Eastern Pondmussel, Ligumia nasuta, is widespread along but occurs elsewhere only Lakes, suggesting that it one of origin. populations are now imperiled following invasion lakes by dreissenid mussels. We examined patterns diversity mitochondrial CO1 ND1 genes L. nasuta Genetic was low included two haplotypes, all which were also found populations. higher four six haplotypes. Pairwise ФST revealed significant genetic differentiation for both between not within These results suggest derived a single, small founder group an river. As such, may be considered single management unit conservation efforts based on propagation or translocation should limited use source stock prevent introduction non-native