Abstract:
:We investigate population genetic structuring in Margaritifera falcata, a freshwater mussel native to western North America, across the majority of its geographical range. We find shallow rangewide genetic structure, strong population-level structuring and very low population diversity in this species, using both mitochondrial sequence and nuclear microsatellite data. We contrast these patterns with previous findings in another freshwater mussel species group (Anodonta californiensis/A. nuttalliana) occupying the same continental region and many of the same watersheds. We conclude that differences are likely caused by contrasting life history attributes between genera, particularly host fish requirements and hermaphroditism. Further, we demonstrate the occurrence of a 'hotspot' for genetic diversity in both groups of mussels, occurring in the vicinity of the lower Columbia River drainage. We suggest that stream hierarchy may be responsible for this pattern and may produce similar patterns in other widespread freshwater species.
journal_name
Mol Ecoljournal_title
Molecular ecologyauthors
Mock KE,Brim Box JC,Chong JP,Furnish J,Howard JKdoi
10.1111/mec.12557subject
Has Abstractpub_date
2013-12-01 00:00:00pages
6060-73issue
24eissn
0962-1083issn
1365-294Xjournal_volume
22pub_type
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