10.5061/DRYAD.Q2D3V
Ginson, Robert
University of Windsor
Walter, Ryan P.
University of Windsor
Mandrak, Nicholas E.
University of Windsor
Beneteau, Courtney L.
University of Windsor
Heath, Daniel D.
University of Windsor
Data from: Hierarchical analysis of genetic structure in the
habitat-specialist Eastern Sand Darter (Ammocrypta pellucida)
Dryad
dataset
2016
Ammocrypta pellucida
Eastern Sand Darter
riverine fish
2016-01-08T00:00:00Z
2016-01-08T00:00:00Z
en
https://doi.org/10.1002/ece3.1392
83356 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Quantifying spatial genetic structure can reveal the relative influences
of contemporary and historic factors underlying localized and regional
patterns of genetic diversity and gene flow – important considerations for
the development of effective conservation efforts. Using 10 polymorphic
microsatellite loci, we characterize genetic variation among populations
across the range of the Eastern Sand Darter (Ammocrypta pellucida), a
small riverine percid that is highly dependent on sandy substrate
microhabitats. We tested for fine scale, regional, and historic patterns
of genetic structure. As expected, significant differentiation was
detected among rivers within drainages and among drainages. At finer
scales, an unexpected lack of within-river genetic structure among
fragmented sandy microhabitats suggests that stratified dispersal
resulting from unstable sand bar habitat degradation (natural and
anthropogenic) may preclude substantial genetic differentiation within
rivers. Among-drainage genetic structure indicates that postglacial (14
kya) drainage connectivity continues to influence contemporary genetic
structure among Eastern Sand Darter populations in southern Ontario. These
results provide an unexpected contrast to other benthic riverine fish in
the Great Lakes drainage and suggest that habitat-specific fishes, such as
the Eastern Sand Darter, can evolve dispersal strategies that overcome
fragmented and temporally unstable habitats.
10 microsatellite loci from Ginson et al. doi: 10.1002/ece3.1392Allele
fragment sizes, in 3 digit Genepop format, for 10 microsatellite loci used
in Ginson et al. (doi: 10.1002/ece3.1392).Ginson_et_al_ESD_usats.txt
Great Lakes watershed
St. Lawrence River
Wabash River
Ohio River