Genetically monomorphic brown trout (Salmo trutta L.) populations, as revealed by mitochondrial DNA, multilocus and single-locus minisatellite (VNTR) analyses

Paulo A. Prodöhl; Andrew F. Walker; Rosaleen Hynes; John B. Taggart; Andrew Ferguson

doi:10.1038/hdy.1997.144

Genetically monomorphic brown trout (Salmo trutta L.) populations, as revealed by mitochondrial DNA, multilocus and single-locus minisatellite (VNTR) analyses

Paulo A. Prodöhl, Andrew F. Walker, Rosaleen Hynes, John B. Taggart, Andrew Ferguson^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

Normally, populations of brown trout are genetically highly variable. Two adjacent populations from north-west Scotland, which had previously been found to be monomorphic for 46 protein-coding loci, were studied by higher resolution techniques. Analyses of mitochondrial DNA, multilocus DNA fingerprints and eight specific minisatellite loci revealed no genetic variation among individuals or genetic differences between the two populations. Continual low effective population sizes or severe repeated bottlenecks, as a result of low or variable recruitment, probably explain the atypical absence of genetic variation in these trout populations. Growth data do not provide any evidence of a reduction in fitness in trout from these populations.

Original language	English
Pages (from-to)	208-213
Number of pages	6
Journal	Heredity
Volume	79
Issue number	2
DOIs	https://doi.org/10.1038/hdy.1997.144
Publication status	Published - 01 Jan 1997

Keywords

Brown trout
Inbreeding depression
Minisatellite DNA
Mitochondrial DNA
Monomorphism

ASJC Scopus subject areas

Genetics
Genetics(clinical)

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10.1038/hdy.1997.144

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title = "Genetically monomorphic brown trout (Salmo trutta L.) populations, as revealed by mitochondrial DNA, multilocus and single-locus minisatellite (VNTR) analyses",

abstract = "Normally, populations of brown trout are genetically highly variable. Two adjacent populations from north-west Scotland, which had previously been found to be monomorphic for 46 protein-coding loci, were studied by higher resolution techniques. Analyses of mitochondrial DNA, multilocus DNA fingerprints and eight specific minisatellite loci revealed no genetic variation among individuals or genetic differences between the two populations. Continual low effective population sizes or severe repeated bottlenecks, as a result of low or variable recruitment, probably explain the atypical absence of genetic variation in these trout populations. Growth data do not provide any evidence of a reduction in fitness in trout from these populations.",

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T1 - Genetically monomorphic brown trout (Salmo trutta L.) populations, as revealed by mitochondrial DNA, multilocus and single-locus minisatellite (VNTR) analyses

AU - Prodöhl, Paulo A.

AU - Walker, Andrew F.

AU - Hynes, Rosaleen

AU - Taggart, John B.

AU - Ferguson, Andrew

PY - 1997/1/1

Y1 - 1997/1/1

N2 - Normally, populations of brown trout are genetically highly variable. Two adjacent populations from north-west Scotland, which had previously been found to be monomorphic for 46 protein-coding loci, were studied by higher resolution techniques. Analyses of mitochondrial DNA, multilocus DNA fingerprints and eight specific minisatellite loci revealed no genetic variation among individuals or genetic differences between the two populations. Continual low effective population sizes or severe repeated bottlenecks, as a result of low or variable recruitment, probably explain the atypical absence of genetic variation in these trout populations. Growth data do not provide any evidence of a reduction in fitness in trout from these populations.

AB - Normally, populations of brown trout are genetically highly variable. Two adjacent populations from north-west Scotland, which had previously been found to be monomorphic for 46 protein-coding loci, were studied by higher resolution techniques. Analyses of mitochondrial DNA, multilocus DNA fingerprints and eight specific minisatellite loci revealed no genetic variation among individuals or genetic differences between the two populations. Continual low effective population sizes or severe repeated bottlenecks, as a result of low or variable recruitment, probably explain the atypical absence of genetic variation in these trout populations. Growth data do not provide any evidence of a reduction in fitness in trout from these populations.

KW - Brown trout

KW - Inbreeding depression

KW - Minisatellite DNA

KW - Mitochondrial DNA

KW - Monomorphism

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DO - 10.1038/hdy.1997.144

M3 - Article

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Genetically monomorphic brown trout (Salmo trutta L.) populations, as revealed by mitochondrial DNA, multilocus and single-locus minisatellite (VNTR) analyses

Abstract

Keywords

ASJC Scopus subject areas

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