Comparative Phylogeography of Pocketbook and Pimpleback Mussels (family Unionidae) in the St. Croix River
Author | : Suzannah Szumowski |
Publisher | : |
Total Pages | : 77 |
Release | : 2009 |
Genre | : Dams |
ISBN | : |
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Freshwater mussels have suffered from severe anthropogenic disturbances, such as overharvesting and habitat destruction. Thus far, very few conservation studies have sought to quantify the genetic variation typical of healthy, robust mussel populations. Sequencing of the mitochondrial ND gene in non-imperiled species revealed that populations of Quadrula. pustulosa contained more numerous and more highly divergent haplotypes than did Lampsilis cardium populations. AMOVA analysis indicated that genetic structuring has not been affected by the presence of a dam in the system. These results suggest that populations within the same river may be aggregated without causing outbreeding depression.