New microsatellite markers for examining genetic variation in peripheral and core populations of the Coastal Giant Salamander (Dicamptodon tenebrosus)

Rachael Y Dudaniec; Andrew Storfer; Stephen F Spear; John S Richardson

doi:10.1371/journal.pone.0014333

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New microsatellite markers for examining genetic variation in peripheral and core populations of the Coastal Giant Salamander (Dicamptodon tenebrosus)

Journal article

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New microsatellite markers for examining genetic variation in peripheral and core populations of the Coastal Giant Salamander (Dicamptodon tenebrosus)

Rachael Y Dudaniec, Andrew Storfer, Stephen F Spear and John S Richardson

PloS one, Vol.5(12), pp.e14333-e14333

12/15/2010

DOI: https://doi.org/10.1371/journal.pone.0014333

Handle:

https://hdl.handle.net/2376/103961

PMCID: PMC3002275

PMID: 21179519

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Abstract

Species Specificity

Molecular Sequence Data

Urodela

Washington

Microsatellite Repeats - genetics

Polymorphism, Genetic

Genetic Variation

Homozygote

Animals

Base Sequence

Alleles

Heterozygote

Models, Genetic

The Coastal Giant Salamander (Dicamptodon tenebrosus) is classified as threatened at the northern periphery of its range in British Columbia (BC), Canada, primarily due to forestry practices and habitat fragmentation. Characterising dispersal behaviour and population connectivity is therefore a priority for this region, while genetic differentiation in core versus peripheral locations remains unstudied in this wide-ranging species. We present seven new polymorphic microsatellite markers for use in population genetic analyses of D. tenebrosus. We examine locus characteristics and genetic variation in 12 streams at the species' northern range limit in BC, and within two regions representing sub-peripheral (North Cascades) and core localities (South Cascades) in Washington State, United States. In BC, the number of alleles per locus ranged from 2-5 and observed heterozygosity ranged from 0.044-0.825. Genetic differentiation was highest between BC and the South Cascades, and intermediate between BC and the North Cascades. Across loci, mean allelic richness was similar across regions, while private allelic richness was highest in the core locality (corrected for sample size). These new microsatellite loci will be a valuable addition to existing markers for detailed landscape and population genetic analyses of D. tenebrosus across its range.

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Title: New microsatellite markers for examining genetic variation in peripheral and core populations of the Coastal Giant Salamander (Dicamptodon tenebrosus)
Creators: Rachael Y Dudaniec - Department of Forest Sciences, University of British Columbia, Vancouver, Canada. rachael.dudaniec@gmail.com
Andrew Storfer
Stephen F Spear
John S Richardson
Publication Details: PloS one, Vol.5(12), pp.e14333-e14333
Academic Unit: Biological Sciences, School of
Publisher: United States
Identifiers: 99900546852801842
Language: English
Resource Type: Journal article