Transferrin Variation in North American Populations of the Atlantic Salmon, Salmo salar
A latitudinal cline was indicated by the frequency of the Tf 4 transferrin allele in North American populations of the Atlantic salmon (Salmo salar) and an earlier suggestion of a major genetic discontinuity between the salmon populations of Newfoundland and those of the Canadian Maritimes is reject...
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Canadian Science Publishing
1974
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Online Access: | http://dx.doi.org/10.1139/f74-117 http://www.nrcresearchpress.com/doi/pdf/10.1139/f74-117 |
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crcansciencepubl:10.1139/f74-117 2023-12-17T10:27:19+01:00 Transferrin Variation in North American Populations of the Atlantic Salmon, Salmo salar Payne, R. H. 1974 http://dx.doi.org/10.1139/f74-117 http://www.nrcresearchpress.com/doi/pdf/10.1139/f74-117 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Journal of the Fisheries Research Board of Canada volume 31, issue 6, page 1037-1041 ISSN 0015-296X General Medicine journal-article 1974 crcansciencepubl https://doi.org/10.1139/f74-117 2023-11-19T13:39:02Z A latitudinal cline was indicated by the frequency of the Tf 4 transferrin allele in North American populations of the Atlantic salmon (Salmo salar) and an earlier suggestion of a major genetic discontinuity between the salmon populations of Newfoundland and those of the Canadian Maritimes is rejected.Male one-sea-winter fish had a statistically significant deficit of heterozygotes but transferrin phenotypes of one-sea-winter females and two-sea-winter or older fish of either sex agreed closely with the predictions of Hardy–Weinberg–Castle equilibria. Heterozygosity for Tf 4 may be semilethal in male salmon programmed to return to spawn after one winter at sea.A comparison of anadromous and nonanadromous salmon populations from the same river system demonstrated that considerable genetic divergence can take place when postglacial crustal recovery produces barriers to upstream migration. The relative fitnesses of the transferrin phenotypes may be different for anadromous and nonanadromous life styles. In view of the demonstrated genetic divergence between anadromous and nonanadromous salmon stocks, the practice of "improving" salmon rivers by removing natural obstructions to upstream migration must be reconsidered in the case of river systems which have large stocks of nonanadromous salmon. Article in Journal/Newspaper Atlantic salmon Newfoundland Salmo salar Canadian Science Publishing (via Crossref) Journal of the Fisheries Research Board of Canada 31 6 1037 1041 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
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crcansciencepubl |
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English |
topic |
General Medicine |
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General Medicine Payne, R. H. Transferrin Variation in North American Populations of the Atlantic Salmon, Salmo salar |
topic_facet |
General Medicine |
description |
A latitudinal cline was indicated by the frequency of the Tf 4 transferrin allele in North American populations of the Atlantic salmon (Salmo salar) and an earlier suggestion of a major genetic discontinuity between the salmon populations of Newfoundland and those of the Canadian Maritimes is rejected.Male one-sea-winter fish had a statistically significant deficit of heterozygotes but transferrin phenotypes of one-sea-winter females and two-sea-winter or older fish of either sex agreed closely with the predictions of Hardy–Weinberg–Castle equilibria. Heterozygosity for Tf 4 may be semilethal in male salmon programmed to return to spawn after one winter at sea.A comparison of anadromous and nonanadromous salmon populations from the same river system demonstrated that considerable genetic divergence can take place when postglacial crustal recovery produces barriers to upstream migration. The relative fitnesses of the transferrin phenotypes may be different for anadromous and nonanadromous life styles. In view of the demonstrated genetic divergence between anadromous and nonanadromous salmon stocks, the practice of "improving" salmon rivers by removing natural obstructions to upstream migration must be reconsidered in the case of river systems which have large stocks of nonanadromous salmon. |
format |
Article in Journal/Newspaper |
author |
Payne, R. H. |
author_facet |
Payne, R. H. |
author_sort |
Payne, R. H. |
title |
Transferrin Variation in North American Populations of the Atlantic Salmon, Salmo salar |
title_short |
Transferrin Variation in North American Populations of the Atlantic Salmon, Salmo salar |
title_full |
Transferrin Variation in North American Populations of the Atlantic Salmon, Salmo salar |
title_fullStr |
Transferrin Variation in North American Populations of the Atlantic Salmon, Salmo salar |
title_full_unstemmed |
Transferrin Variation in North American Populations of the Atlantic Salmon, Salmo salar |
title_sort |
transferrin variation in north american populations of the atlantic salmon, salmo salar |
publisher |
Canadian Science Publishing |
publishDate |
1974 |
url |
http://dx.doi.org/10.1139/f74-117 http://www.nrcresearchpress.com/doi/pdf/10.1139/f74-117 |
genre |
Atlantic salmon Newfoundland Salmo salar |
genre_facet |
Atlantic salmon Newfoundland Salmo salar |
op_source |
Journal of the Fisheries Research Board of Canada volume 31, issue 6, page 1037-1041 ISSN 0015-296X |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f74-117 |
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Journal of the Fisheries Research Board of Canada |
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31 |
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6 |
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1037 |
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1041 |
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1785579145082699776 |