Effects of host migration, diversity and aquaculture on sea lice threats to Pacific salmon populations
Animal migrations can affect disease dynamics. One consequence of migration common to marine fish and invertebrates is migratory allopatry—a period of spatial separation between adult and juvenile hosts, which is caused by host migration and which prevents parasite transmission from adult to juvenil...
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ftpubmed:oai:pubmedcentral.nih.gov:2293942 2023-05-15T17:52:51+02:00 Effects of host migration, diversity and aquaculture on sea lice threats to Pacific salmon populations Krkošek, Martin Gottesfeld, Allen Proctor, Bart Rolston, Dave Carr-Harris, Charmaine Lewis, Mark A 2007-10-17 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2293942 http://www.ncbi.nlm.nih.gov/pubmed/17939989 https://doi.org/10.1098/rspb.2007.1122 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2293942 http://www.ncbi.nlm.nih.gov/pubmed/17939989 http://dx.doi.org/10.1098/rspb.2007.1122 © 2007 The Royal Society Research Article Text 2007 ftpubmed https://doi.org/10.1098/rspb.2007.1122 2013-09-01T17:52:03Z Animal migrations can affect disease dynamics. One consequence of migration common to marine fish and invertebrates is migratory allopatry—a period of spatial separation between adult and juvenile hosts, which is caused by host migration and which prevents parasite transmission from adult to juvenile hosts. We studied this characteristic for sea lice (Lepeophtheirus salmonis and Caligus clemensi) and pink salmon (Oncorhynchus gorbuscha) from one of the Canada's largest salmon stocks. Migratory allopatry protects juvenile salmon from L. salmonis for two to three months of early marine life (2–3% prevalence). In contrast, host diversity facilitates access for C. clemensi to juvenile salmon (8–20% prevalence) but infections appear ephemeral. Aquaculture can augment host abundance and diversity and increase parasite exposure of wild juvenile fish. An empirically parametrized model shows high sensitivity of salmon populations to increased L. salmonis exposure, predicting population collapse at one to five motile L. salmonis per juvenile pink salmon. These results characterize parasite threats of salmon aquaculture to wild salmon populations and show how host migration and diversity are important factors affecting parasite transmission in the oceans. Text Oncorhynchus gorbuscha Pink salmon PubMed Central (PMC) Pacific Proceedings of the Royal Society B: Biological Sciences 274 1629 3141 3149 |
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Research Article Krkošek, Martin Gottesfeld, Allen Proctor, Bart Rolston, Dave Carr-Harris, Charmaine Lewis, Mark A Effects of host migration, diversity and aquaculture on sea lice threats to Pacific salmon populations |
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Research Article |
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Animal migrations can affect disease dynamics. One consequence of migration common to marine fish and invertebrates is migratory allopatry—a period of spatial separation between adult and juvenile hosts, which is caused by host migration and which prevents parasite transmission from adult to juvenile hosts. We studied this characteristic for sea lice (Lepeophtheirus salmonis and Caligus clemensi) and pink salmon (Oncorhynchus gorbuscha) from one of the Canada's largest salmon stocks. Migratory allopatry protects juvenile salmon from L. salmonis for two to three months of early marine life (2–3% prevalence). In contrast, host diversity facilitates access for C. clemensi to juvenile salmon (8–20% prevalence) but infections appear ephemeral. Aquaculture can augment host abundance and diversity and increase parasite exposure of wild juvenile fish. An empirically parametrized model shows high sensitivity of salmon populations to increased L. salmonis exposure, predicting population collapse at one to five motile L. salmonis per juvenile pink salmon. These results characterize parasite threats of salmon aquaculture to wild salmon populations and show how host migration and diversity are important factors affecting parasite transmission in the oceans. |
format |
Text |
author |
Krkošek, Martin Gottesfeld, Allen Proctor, Bart Rolston, Dave Carr-Harris, Charmaine Lewis, Mark A |
author_facet |
Krkošek, Martin Gottesfeld, Allen Proctor, Bart Rolston, Dave Carr-Harris, Charmaine Lewis, Mark A |
author_sort |
Krkošek, Martin |
title |
Effects of host migration, diversity and aquaculture on sea lice threats to Pacific salmon populations |
title_short |
Effects of host migration, diversity and aquaculture on sea lice threats to Pacific salmon populations |
title_full |
Effects of host migration, diversity and aquaculture on sea lice threats to Pacific salmon populations |
title_fullStr |
Effects of host migration, diversity and aquaculture on sea lice threats to Pacific salmon populations |
title_full_unstemmed |
Effects of host migration, diversity and aquaculture on sea lice threats to Pacific salmon populations |
title_sort |
effects of host migration, diversity and aquaculture on sea lice threats to pacific salmon populations |
publisher |
The Royal Society |
publishDate |
2007 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2293942 http://www.ncbi.nlm.nih.gov/pubmed/17939989 https://doi.org/10.1098/rspb.2007.1122 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Oncorhynchus gorbuscha Pink salmon |
genre_facet |
Oncorhynchus gorbuscha Pink salmon |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2293942 http://www.ncbi.nlm.nih.gov/pubmed/17939989 http://dx.doi.org/10.1098/rspb.2007.1122 |
op_rights |
© 2007 The Royal Society |
op_doi |
https://doi.org/10.1098/rspb.2007.1122 |
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Proceedings of the Royal Society B: Biological Sciences |
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274 |
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1629 |
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3141 |
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3149 |
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1766160590384922624 |