Genetic detection of sex-specific dispersal in historical and contemporary populations of anadromous brown trout Salmo trutta

Dorte Bekkevold; Michael Møller Hansen; Karen-Lise Dons Mensberg

doi:10.1111/j.1365-294X.2004.02156.x

Genetic detection of sex-specific dispersal in historical and contemporary populations of anadromous brown trout Salmo trutta

Dorte Bekkevold, Michael Møller Hansen, Karen-Lise Dons Mensberg

National Institute of Aquatic Resources

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The study of sex-biased dispersal has attracted considerable attention in birds and mammals, but less in other taxa, including fishes. We analysed sex-specific dispersal in historical (1910s and 1950s) and contemporary (1990s) samples of anadromous brown trout Salmo trutta. We tested the hypothesis that dispersal is unbiased using information from microsatellite DNA and applying an assignment index for 11 temporally and spatially separated samples. Our results are most consistent with brown trout dispersal being male biased, and provide no evidence of female bias. We found no evidence that dispersal patterns changed over time, indicating that stocking with hatchery strains did not affect sex-specific dispersal

Original language	English
Journal	Molecular Ecology
Volume	13
Issue number	6
Pages (from-to)	1707-1712
ISSN	0962-1083
DOIs	https://doi.org/10.1111/j.1365-294X.2004.02156.x
Publication status	Published - 2004

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title = "Genetic detection of sex-specific dispersal in historical and contemporary populations of anadromous brown trout Salmo trutta",

abstract = "The study of sex-biased dispersal has attracted considerable attention in birds and mammals, but less in other taxa, including fishes. We analysed sex-specific dispersal in historical (1910s and 1950s) and contemporary (1990s) samples of anadromous brown trout Salmo trutta. We tested the hypothesis that dispersal is unbiased using information from microsatellite DNA and applying an assignment index for 11 temporally and spatially separated samples. Our results are most consistent with brown trout dispersal being male biased, and provide no evidence of female bias. We found no evidence that dispersal patterns changed over time, indicating that stocking with hatchery strains did not affect sex-specific dispersal",

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AU - Mensberg, Karen-Lise Dons

PY - 2004

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N2 - The study of sex-biased dispersal has attracted considerable attention in birds and mammals, but less in other taxa, including fishes. We analysed sex-specific dispersal in historical (1910s and 1950s) and contemporary (1990s) samples of anadromous brown trout Salmo trutta. We tested the hypothesis that dispersal is unbiased using information from microsatellite DNA and applying an assignment index for 11 temporally and spatially separated samples. Our results are most consistent with brown trout dispersal being male biased, and provide no evidence of female bias. We found no evidence that dispersal patterns changed over time, indicating that stocking with hatchery strains did not affect sex-specific dispersal

AB - The study of sex-biased dispersal has attracted considerable attention in birds and mammals, but less in other taxa, including fishes. We analysed sex-specific dispersal in historical (1910s and 1950s) and contemporary (1990s) samples of anadromous brown trout Salmo trutta. We tested the hypothesis that dispersal is unbiased using information from microsatellite DNA and applying an assignment index for 11 temporally and spatially separated samples. Our results are most consistent with brown trout dispersal being male biased, and provide no evidence of female bias. We found no evidence that dispersal patterns changed over time, indicating that stocking with hatchery strains did not affect sex-specific dispersal

KW - Individ- og populationsinteraktioner

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DO - 10.1111/j.1365-294X.2004.02156.x

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JO - Molecular Ecology

JF - Molecular Ecology

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ER -

Genetic detection of sex-specific dispersal in historical and contemporary populations of anadromous brown trout Salmo trutta

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