Selective exploitation of early running fish may induce genetic and phenotypic changes in Atlantic salmon
Genetic evidence for the selective exploitation by anglers of early running fish was examined in four Iberian Atlantic salmon populations using protein and mtDNA markers. The populations studied had been exploited exclusively by anglers since 1949 during a fixed fishing season that ran approximately...
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ftuhipublicatio:oai:pure.atira.dk:publications/4ff8062b-a0a9-4b0a-8500-1cf22088eda5 2024-06-23T07:51:15+00:00 Selective exploitation of early running fish may induce genetic and phenotypic changes in Atlantic salmon Consuegra, S De Leaniz, CG Serdio, A Verspoor, E 2005-09 https://pure.uhi.ac.uk/en/publications/4ff8062b-a0a9-4b0a-8500-1cf22088eda5 https://doi.org/10.1111/j.0022-1112.2005.00844.x eng eng https://pure.uhi.ac.uk/en/publications/4ff8062b-a0a9-4b0a-8500-1cf22088eda5 info:eu-repo/semantics/restrictedAccess Consuegra , S , De Leaniz , CG , Serdio , A & Verspoor , E 2005 , ' Selective exploitation of early running fish may induce genetic and phenotypic changes in Atlantic salmon ' , Journal of Fish Biology , vol. 67 , no. s1 , pp. 129-145 . https://doi.org/10.1111/j.0022-1112.2005.00844.x Atlantic salmon conservation isozymes mtDNA population structuring selective exploitation article 2005 ftuhipublicatio https://doi.org/10.1111/j.0022-1112.2005.00844.x 2024-05-27T23:51:24Z Genetic evidence for the selective exploitation by anglers of early running fish was examined in four Iberian Atlantic salmon populations using protein and mtDNA markers. The populations studied had been exploited exclusively by anglers since 1949 during a fixed fishing season that ran approximately from March to July. Genetic variation at six protein loci was small and was accounted for by the MEP-2* and MDH-3,4* polymorphisms, which generally remained stable over time and were in Castle–Hardy–Weinberg equilibrium during the fishing season. Early running fish that had spent multiple winters at sea (MSW) generally had higher frequencies of the common MEP-2*(100) allele than did late running, one sea winter (1SW) grilse that were significantly smaller and tended to escape the fishery. Spawners differed from angler caught fish in their mtDNA frequencies and consistently had a lower sea-age and a smaller body size. Spawners also smolted at an older age and displayed lower frequencies of the MEP-2*(100) allele in three of the four populations studied. These results suggest that in these rivers anglers selectively exploit a distinct component of the population and inadvertently cause a differential mortality of genetic types that is likely to be detrimental to population viability. Article in Journal/Newspaper Atlantic salmon University of the Highlands and Islands: Research Database of UHI Journal of Fish Biology 67 s1 129 145 |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
Atlantic salmon conservation isozymes mtDNA population structuring selective exploitation |
spellingShingle |
Atlantic salmon conservation isozymes mtDNA population structuring selective exploitation Consuegra, S De Leaniz, CG Serdio, A Verspoor, E Selective exploitation of early running fish may induce genetic and phenotypic changes in Atlantic salmon |
topic_facet |
Atlantic salmon conservation isozymes mtDNA population structuring selective exploitation |
description |
Genetic evidence for the selective exploitation by anglers of early running fish was examined in four Iberian Atlantic salmon populations using protein and mtDNA markers. The populations studied had been exploited exclusively by anglers since 1949 during a fixed fishing season that ran approximately from March to July. Genetic variation at six protein loci was small and was accounted for by the MEP-2* and MDH-3,4* polymorphisms, which generally remained stable over time and were in Castle–Hardy–Weinberg equilibrium during the fishing season. Early running fish that had spent multiple winters at sea (MSW) generally had higher frequencies of the common MEP-2*(100) allele than did late running, one sea winter (1SW) grilse that were significantly smaller and tended to escape the fishery. Spawners differed from angler caught fish in their mtDNA frequencies and consistently had a lower sea-age and a smaller body size. Spawners also smolted at an older age and displayed lower frequencies of the MEP-2*(100) allele in three of the four populations studied. These results suggest that in these rivers anglers selectively exploit a distinct component of the population and inadvertently cause a differential mortality of genetic types that is likely to be detrimental to population viability. |
format |
Article in Journal/Newspaper |
author |
Consuegra, S De Leaniz, CG Serdio, A Verspoor, E |
author_facet |
Consuegra, S De Leaniz, CG Serdio, A Verspoor, E |
author_sort |
Consuegra, S |
title |
Selective exploitation of early running fish may induce genetic and phenotypic changes in Atlantic salmon |
title_short |
Selective exploitation of early running fish may induce genetic and phenotypic changes in Atlantic salmon |
title_full |
Selective exploitation of early running fish may induce genetic and phenotypic changes in Atlantic salmon |
title_fullStr |
Selective exploitation of early running fish may induce genetic and phenotypic changes in Atlantic salmon |
title_full_unstemmed |
Selective exploitation of early running fish may induce genetic and phenotypic changes in Atlantic salmon |
title_sort |
selective exploitation of early running fish may induce genetic and phenotypic changes in atlantic salmon |
publishDate |
2005 |
url |
https://pure.uhi.ac.uk/en/publications/4ff8062b-a0a9-4b0a-8500-1cf22088eda5 https://doi.org/10.1111/j.0022-1112.2005.00844.x |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
Consuegra , S , De Leaniz , CG , Serdio , A & Verspoor , E 2005 , ' Selective exploitation of early running fish may induce genetic and phenotypic changes in Atlantic salmon ' , Journal of Fish Biology , vol. 67 , no. s1 , pp. 129-145 . https://doi.org/10.1111/j.0022-1112.2005.00844.x |
op_relation |
https://pure.uhi.ac.uk/en/publications/4ff8062b-a0a9-4b0a-8500-1cf22088eda5 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/j.0022-1112.2005.00844.x |
container_title |
Journal of Fish Biology |
container_volume |
67 |
container_issue |
s1 |
container_start_page |
129 |
op_container_end_page |
145 |
_version_ |
1802642271629213696 |