Landscape genetics reveal broad and fine-scale population structure due to landscape features and climate history in the northern leopard frog (Rana pipiens ) in North Dakota

Ecology and Evolution
Justin M WaraniakCraig A Stockwell

Abstract

Prehistoric climate and landscape features play large roles structuring wildlife populations. The amphibians of the northern Great Plains of North America present an opportunity to investigate how these factors affect colonization, migration, and current population genetic structure. This study used 11 microsatellite loci to genotype 1,230 northern leopard frogs (Rana pipiens) from 41 wetlands (30 samples/wetland) across North Dakota. Genetic structure of the sampled frogs was evaluated using Bayesian and multivariate clustering methods. All analyses produced concordant results, identifying a major east-west split between two R. pipiens population clusters separated by the Missouri River. Substructuring within the two major identified population clusters was also found. Spatial principal component analysis (sPCA) and variance partitioning analysis identified distance, river basins, and the Missouri River as the most important landscape factors differentiating R. pipiens populations across the state. Bayesian reconstruction of coalescence times suggested the major east-west split occurred ~13-18 kya during a period of glacial retreat in the northern Great Plains and substructuring largely occurred ~5-11 kya during a period of ex...Continue Reading

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Citations

Aug 6, 2019·Integrated Environmental Assessment and Management·Bethany K KunzNicholas S Green

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Methods Mentioned

BETA
genotyping
PCA

Software Mentioned

MICRO
adegenet
BIOCLIM
dismo
CHECKER
WorldClim
PERMANOVA
sdmpredictors
DAPC
BAPS

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