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Population genetic differentiation of sea lice (Lepeophtheirus salmonis) parasitic on Atlantic and Pacific salmonids: analyses of microsatellite DNA variation among wild and farmed hosts

Research output: Contribution to journalArticle

DOI

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Population genetic differentiation of sea lice (Lepeophtheirus salmonis) parasitic on Atlantic and Pacific salmonids: analyses of microsatellite DNA variation among wild and farmed hosts. / Todd, Christopher David; Walker, AM; Ritchie, Michael Gordon; Graves, Jefferson Alden; Walker, AF.

In: Canadian Journal of Fisheries and Aquatic Sciences, Vol. 61, No. 7, 07.2004, p. 1176-1190.

Research output: Contribution to journalArticle

Harvard

Todd, CD, Walker, AM, Ritchie, MG, Graves, JA & Walker, AF 2004, 'Population genetic differentiation of sea lice (Lepeophtheirus salmonis) parasitic on Atlantic and Pacific salmonids: analyses of microsatellite DNA variation among wild and farmed hosts', Canadian Journal of Fisheries and Aquatic Sciences, vol. 61, no. 7, pp. 1176-1190. https://doi.org/10.1139/f04-069

APA

Todd, C. D., Walker, AM., Ritchie, M. G., Graves, J. A., & Walker, AF. (2004). Population genetic differentiation of sea lice (Lepeophtheirus salmonis) parasitic on Atlantic and Pacific salmonids: analyses of microsatellite DNA variation among wild and farmed hosts. Canadian Journal of Fisheries and Aquatic Sciences, 61(7), 1176-1190. https://doi.org/10.1139/f04-069

Vancouver

Todd CD, Walker AM, Ritchie MG, Graves JA, Walker AF. Population genetic differentiation of sea lice (Lepeophtheirus salmonis) parasitic on Atlantic and Pacific salmonids: analyses of microsatellite DNA variation among wild and farmed hosts. Canadian Journal of Fisheries and Aquatic Sciences. 2004 Jul;61(7):1176-1190. https://doi.org/10.1139/f04-069

Author

Todd, Christopher David ; Walker, AM ; Ritchie, Michael Gordon ; Graves, Jefferson Alden ; Walker, AF. / Population genetic differentiation of sea lice (Lepeophtheirus salmonis) parasitic on Atlantic and Pacific salmonids: analyses of microsatellite DNA variation among wild and farmed hosts. In: Canadian Journal of Fisheries and Aquatic Sciences. 2004 ; Vol. 61, No. 7. pp. 1176-1190.

Bibtex - Download

@article{c409c587627245e0ab2a05e8274cb20c,
title = "Population genetic differentiation of sea lice (Lepeophtheirus salmonis) parasitic on Atlantic and Pacific salmonids: analyses of microsatellite DNA variation among wild and farmed hosts",
abstract = "The copepod Lepeophtheirus salmonis is ectoparasitic on Atlantic and Pacific wild salmonids. It is a major pest to Atlantic salmon (Salmo salar) aquaculture and may be implicated in recent declines of certain European wild salmonid stocks. Variation at six microsatellite loci was assessed among L. salmonis from wild and farmed salmonids in Scotland, wild sea-run brown trout (Salmo trutta) in Norway, and farmed Atlantic salmon in eastern Canada. An outgroup North Pacific sample was obtained from farmed Atlantic salmon in British Columbia. No significant differentiation was found between L. salmonis from the host species or among samples from throughout the North Atlantic. This is consistent with long-distance oceanic migration of wild hosts and larval interchange between farmed and wild host stocks being sufficient to prevent genetic divergence of L. salmonis throughout the North Atlantic. These results have important management implications for both wild stock conservation and aquaculture in that genetically, L. salmonis in the North Atlantic comprises a single population: there is no evidence of isolation of populations on farmed hosts from those on wild fish. Comparison between North Pacific and North Atlantic L. salmonis populations showed significant but low differentiation (F-ST = 0.06).",
keywords = "MOSQUITO CULEX-PIPIENS, SALAR L., TRUTTA L., INSECTICIDE RESISTANCE, WEST-COAST, KROYER, LOUSE, TROUT, CALIGIDAE, COPEPODA",
author = "Todd, {Christopher David} and AM Walker and Ritchie, {Michael Gordon} and Graves, {Jefferson Alden} and AF Walker",
year = "2004",
month = "7",
doi = "10.1139/f04-069",
language = "English",
volume = "61",
pages = "1176--1190",
journal = "Canadian Journal of Fisheries and Aquatic Sciences",
issn = "0706-652X",
publisher = "National Research Council of Canada",
number = "7",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Population genetic differentiation of sea lice (Lepeophtheirus salmonis) parasitic on Atlantic and Pacific salmonids: analyses of microsatellite DNA variation among wild and farmed hosts

AU - Todd, Christopher David

AU - Walker, AM

AU - Ritchie, Michael Gordon

AU - Graves, Jefferson Alden

AU - Walker, AF

PY - 2004/7

Y1 - 2004/7

N2 - The copepod Lepeophtheirus salmonis is ectoparasitic on Atlantic and Pacific wild salmonids. It is a major pest to Atlantic salmon (Salmo salar) aquaculture and may be implicated in recent declines of certain European wild salmonid stocks. Variation at six microsatellite loci was assessed among L. salmonis from wild and farmed salmonids in Scotland, wild sea-run brown trout (Salmo trutta) in Norway, and farmed Atlantic salmon in eastern Canada. An outgroup North Pacific sample was obtained from farmed Atlantic salmon in British Columbia. No significant differentiation was found between L. salmonis from the host species or among samples from throughout the North Atlantic. This is consistent with long-distance oceanic migration of wild hosts and larval interchange between farmed and wild host stocks being sufficient to prevent genetic divergence of L. salmonis throughout the North Atlantic. These results have important management implications for both wild stock conservation and aquaculture in that genetically, L. salmonis in the North Atlantic comprises a single population: there is no evidence of isolation of populations on farmed hosts from those on wild fish. Comparison between North Pacific and North Atlantic L. salmonis populations showed significant but low differentiation (F-ST = 0.06).

AB - The copepod Lepeophtheirus salmonis is ectoparasitic on Atlantic and Pacific wild salmonids. It is a major pest to Atlantic salmon (Salmo salar) aquaculture and may be implicated in recent declines of certain European wild salmonid stocks. Variation at six microsatellite loci was assessed among L. salmonis from wild and farmed salmonids in Scotland, wild sea-run brown trout (Salmo trutta) in Norway, and farmed Atlantic salmon in eastern Canada. An outgroup North Pacific sample was obtained from farmed Atlantic salmon in British Columbia. No significant differentiation was found between L. salmonis from the host species or among samples from throughout the North Atlantic. This is consistent with long-distance oceanic migration of wild hosts and larval interchange between farmed and wild host stocks being sufficient to prevent genetic divergence of L. salmonis throughout the North Atlantic. These results have important management implications for both wild stock conservation and aquaculture in that genetically, L. salmonis in the North Atlantic comprises a single population: there is no evidence of isolation of populations on farmed hosts from those on wild fish. Comparison between North Pacific and North Atlantic L. salmonis populations showed significant but low differentiation (F-ST = 0.06).

KW - MOSQUITO CULEX-PIPIENS

KW - SALAR L.

KW - TRUTTA L.

KW - INSECTICIDE RESISTANCE

KW - WEST-COAST

KW - KROYER

KW - LOUSE

KW - TROUT

KW - CALIGIDAE

KW - COPEPODA

UR - http://www.scopus.com/inward/record.url?scp=7044267469&partnerID=8YFLogxK

U2 - 10.1139/f04-069

DO - 10.1139/f04-069

M3 - Article

VL - 61

SP - 1176

EP - 1190

JO - Canadian Journal of Fisheries and Aquatic Sciences

JF - Canadian Journal of Fisheries and Aquatic Sciences

SN - 0706-652X

IS - 7

ER -

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