Microsatellite variation and population structure of the moor frog (Rana arvalis) in Scandinavia

Juha Merila

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Several recent studies have found amphibian populations to be genetically highly structured over rather short geographical distances, and that the rate of genetically effective dispersal may differ between the sexes. However, apart from the common frog (Rana temporaria) little is known about the genetic structuring and sex-biased dispersal in northern European amphibians. We investigated the patterns of genetic diversity and differentiation within and among Scandinavian populations of the moor frog (Rana arvalis) using microsatellite markers. The genetic diversity within local R. arvalis populations was not a simple linear negative function of latitude but a convex one: genetic diversity peaked in mid-latitude populations, and declined thereafter dramatically towards the north. The average degree of genetic differentiation among populations (FST = 0.14) was lower than that observed for the common frog (FST = 0.21), though the pattern of isolation by distance was similar for both species. Contrary to common frogs, no evidence for female-biased dispersal was found. The results reinforce the view that amphibian populations areâ¿¿in generalâ¿¿highly structured over relatively small geographical distances, even in comparatively recently colonized areas.
Original languageEnglish
Pages (from-to)2996-3005
Number of pages10
JournalMolecular Ecology
Volume18
DOIs
Publication statusPublished - 2009
Externally publishedYes

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Scandinavian and Nordic Countries
Ranidae
Rana
Scandinavia
frog
Anura
Microsatellite Repeats
population structure
frogs
microsatellite repeats
amphibian
Amphibians
genetic variation
genetic differentiation
Population
amphibians
Rana temporaria
gender
moor
genetic diversity

Cite this

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Microsatellite variation and population structure of the moor frog (Rana arvalis) in Scandinavia. / Merila, Juha.

In: Molecular Ecology, Vol. 18, 2009, p. 2996-3005.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Microsatellite variation and population structure of the moor frog (Rana arvalis) in Scandinavia

AU - Merila, Juha

PY - 2009

Y1 - 2009

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AB - Several recent studies have found amphibian populations to be genetically highly structured over rather short geographical distances, and that the rate of genetically effective dispersal may differ between the sexes. However, apart from the common frog (Rana temporaria) little is known about the genetic structuring and sex-biased dispersal in northern European amphibians. We investigated the patterns of genetic diversity and differentiation within and among Scandinavian populations of the moor frog (Rana arvalis) using microsatellite markers. The genetic diversity within local R. arvalis populations was not a simple linear negative function of latitude but a convex one: genetic diversity peaked in mid-latitude populations, and declined thereafter dramatically towards the north. The average degree of genetic differentiation among populations (FST = 0.14) was lower than that observed for the common frog (FST = 0.21), though the pattern of isolation by distance was similar for both species. Contrary to common frogs, no evidence for female-biased dispersal was found. The results reinforce the view that amphibian populations areâ¿¿in generalâ¿¿highly structured over relatively small geographical distances, even in comparatively recently colonized areas.

KW - amphibian

KW - FST

KW - genetic diversity

KW - microsatellite

KW - Scandinavia.

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DO - 10.1111/j.1365-294X.2009.04252.x

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VL - 18

SP - 2996

EP - 3005

JO - Molecular Biology

JF - Molecular Biology

SN - 0962-1083

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