Restricted matrilineal gene flow and regional differentiation among Atlantic salmon (Salmo salar L.) populations within the Bay of Fundy, eastern Canada

E Verspoor; M O'Sullivan; AL Arnold; D Knox; PG Amiro

doi:10.1038/sj.hdy.6800166

Restricted matrilineal gene flow and regional differentiation among Atlantic salmon (Salmo salar L.) populations within the Bay of Fundy, eastern Canada

E Verspoor, M O'Sullivan, AL Arnold, D Knox, PG Amiro

UHI Inverness

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

46 Citations (Scopus)

Abstract

Matrilineal phylogenetic divergence among Atlantic salmon stocks of the Bay of Fundy in south eastern Canada is investigated. Sequence variation in two regions of the mitochondrial ND1 gene, encompassing 710 base pairs, is described for 168 salmon from 11 rivers. Mean overall haplotype and nucleotide diversity (h and pi) observed are 0.5014 and 0.00095, respectively. Nested clade analysis (NCA) and molecular analysis of variance (AMOVA) both point to highly restricted gene flow among rivers and show the haplotype distribution to be geographically structured. Variation among predefined regions of the Bay (16% ) is greater than among populations within these regions (14% ) The main regional differentiation occurs between rivers of the geographically isolated inner Minas Basin and those elsewhere in the Bay. Differentiation most probably reflects the pattern and nature of the historical processes associated with post-glacial colonisation of the area by salmon following the last Pleistocene glacial maximum c. 18000 yrs BP.

Original language	English
Pages (from-to)	465-472
Number of pages	8
Journal	Heredity
Volume	89
Issue number	6
DOIs	https://doi.org/10.1038/sj.hdy.6800166
Publication status	Published - Dec 2002

Keywords

Atlantic salmon
mitochondrial DNA
phylogeography
regional divergence

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10.1038/sj.hdy.6800166

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title = "Restricted matrilineal gene flow and regional differentiation among Atlantic salmon (Salmo salar L.) populations within the Bay of Fundy, eastern Canada",

abstract = "Matrilineal phylogenetic divergence among Atlantic salmon stocks of the Bay of Fundy in south eastern Canada is investigated. Sequence variation in two regions of the mitochondrial ND1 gene, encompassing 710 base pairs, is described for 168 salmon from 11 rivers. Mean overall haplotype and nucleotide diversity (h and pi) observed are 0.5014 and 0.00095, respectively. Nested clade analysis (NCA) and molecular analysis of variance (AMOVA) both point to highly restricted gene flow among rivers and show the haplotype distribution to be geographically structured. Variation among predefined regions of the Bay (16% ) is greater than among populations within these regions (14% ) The main regional differentiation occurs between rivers of the geographically isolated inner Minas Basin and those elsewhere in the Bay. Differentiation most probably reflects the pattern and nature of the historical processes associated with post-glacial colonisation of the area by salmon following the last Pleistocene glacial maximum c. 18000 yrs BP.",

keywords = "Atlantic salmon, mitochondrial DNA, phylogeography, regional divergence",

author = "E Verspoor and M O'Sullivan and AL Arnold and D Knox and PG Amiro",

year = "2002",

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doi = "10.1038/sj.hdy.6800166",

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volume = "89",

pages = "465--472",

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TY - JOUR

T1 - Restricted matrilineal gene flow and regional differentiation among Atlantic salmon (Salmo salar L.) populations within the Bay of Fundy, eastern Canada

AU - Verspoor, E

AU - O'Sullivan, M

AU - Arnold, AL

AU - Knox, D

AU - Amiro, PG

PY - 2002/12

Y1 - 2002/12

N2 - Matrilineal phylogenetic divergence among Atlantic salmon stocks of the Bay of Fundy in south eastern Canada is investigated. Sequence variation in two regions of the mitochondrial ND1 gene, encompassing 710 base pairs, is described for 168 salmon from 11 rivers. Mean overall haplotype and nucleotide diversity (h and pi) observed are 0.5014 and 0.00095, respectively. Nested clade analysis (NCA) and molecular analysis of variance (AMOVA) both point to highly restricted gene flow among rivers and show the haplotype distribution to be geographically structured. Variation among predefined regions of the Bay (16% ) is greater than among populations within these regions (14% ) The main regional differentiation occurs between rivers of the geographically isolated inner Minas Basin and those elsewhere in the Bay. Differentiation most probably reflects the pattern and nature of the historical processes associated with post-glacial colonisation of the area by salmon following the last Pleistocene glacial maximum c. 18000 yrs BP.

AB - Matrilineal phylogenetic divergence among Atlantic salmon stocks of the Bay of Fundy in south eastern Canada is investigated. Sequence variation in two regions of the mitochondrial ND1 gene, encompassing 710 base pairs, is described for 168 salmon from 11 rivers. Mean overall haplotype and nucleotide diversity (h and pi) observed are 0.5014 and 0.00095, respectively. Nested clade analysis (NCA) and molecular analysis of variance (AMOVA) both point to highly restricted gene flow among rivers and show the haplotype distribution to be geographically structured. Variation among predefined regions of the Bay (16% ) is greater than among populations within these regions (14% ) The main regional differentiation occurs between rivers of the geographically isolated inner Minas Basin and those elsewhere in the Bay. Differentiation most probably reflects the pattern and nature of the historical processes associated with post-glacial colonisation of the area by salmon following the last Pleistocene glacial maximum c. 18000 yrs BP.

KW - Atlantic salmon

KW - mitochondrial DNA

KW - phylogeography

KW - regional divergence

U2 - 10.1038/sj.hdy.6800166

DO - 10.1038/sj.hdy.6800166

M3 - Article

SN - 0018-067X

VL - 89

SP - 465

EP - 472

JO - Heredity

JF - Heredity

IS - 6

ER -

Restricted matrilineal gene flow and regional differentiation among Atlantic salmon (Salmo salar L.) populations within the Bay of Fundy, eastern Canada

Abstract

Keywords

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