Bayou Darter next-gen sequence data and analyses

Bayou Darters (Nothonotus rubrus) are a small benthic fish endemic to
Bayou Pierre, Mississippi. The entire range of the species is threatened
by geomorphic change due to accelerated erosion, channel incision, and
channel evolution processes stemming from the migration of the Mississippi
River and human alterations to the landscape. Bayou Darters have
disappeared from much of mainstem Bayou Pierre, but have expanded their
range upstream into formerly unoccupied tributaries, in concert with
upstream progression of channel evolution processes. In this dataset, we
document an effort to understand whether upstream dispersal into
tributaries is affecting gene flow through fragmentation of populations.
We used Next-Gen sequencing approaches to develop high-resolution
molecular datasets to assess population structure, patterns of
heterozygosity, and effective populations size, throughout the
contemporary distribution of the species.