Evidence of Adaptive Polygenic Variation Between Two Populations of Atlantic Salmon ( Salmo salar ) Native to Tributaries of the S. W. Miramichi River, N.B.
Breeding experiments were conducted to test the hypothesis that spatial homeostasis in growth and proximate composition and geographic variation in body morphology and timing of migration in juvenile Atlantic salmon (Salmo salar) have an adaptive basis. The populations studied were Rocky Brook and S...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
1981
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/f81-043 http://www.nrcresearchpress.com/doi/pdf/10.1139/f81-043 |
id |
crcansciencepubl:10.1139/f81-043 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/f81-043 2024-03-03T08:42:47+00:00 Evidence of Adaptive Polygenic Variation Between Two Populations of Atlantic Salmon ( Salmo salar ) Native to Tributaries of the S. W. Miramichi River, N.B. Riddell, Brian E. Leggett, William C. Saunders, Richard L. 1981 http://dx.doi.org/10.1139/f81-043 http://www.nrcresearchpress.com/doi/pdf/10.1139/f81-043 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 38, issue 3, page 321-333 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1981 crcansciencepubl https://doi.org/10.1139/f81-043 2024-02-07T10:53:36Z Breeding experiments were conducted to test the hypothesis that spatial homeostasis in growth and proximate composition and geographic variation in body morphology and timing of migration in juvenile Atlantic salmon (Salmo salar) have an adaptive basis. The populations studied were Rocky Brook and Sabbies River, tributaries of the Southwest Miramichi River, New Brunswick. Growth rates and proximate composition were very similar in the two populations under hatchery conditions. Genetic contributions to homeostasis in these traits were largely additive. The phenotypic expression of migratory behavior and the genetic control of timing were not quantifiable. A genetic basis to interpopulation variation in body morphology was demonstrated. Progeny from Rocky Brook which exhibits higher flows had more fusiform bodies and longer fins than progeny from Sabbies River when reared under identical conditions. Heritable variation in morphology and a demonstrated directional selection for greater fin size in high velocity environments support the hypothesis that these traits are adaptive. Adaptive polygenic variation between local populations stresses the need to delineate stocks on a functional basis so that species can be managed without significant loss of fitness and/or depletion of genetic variation in natural populations.Key words: quantitative genetics, heritability, adaptation, morphology, growth, proximate composition, migration, Atlantic salmon, interdemic variation, directional selection Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 38 3 321 333 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Riddell, Brian E. Leggett, William C. Saunders, Richard L. Evidence of Adaptive Polygenic Variation Between Two Populations of Atlantic Salmon ( Salmo salar ) Native to Tributaries of the S. W. Miramichi River, N.B. |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Breeding experiments were conducted to test the hypothesis that spatial homeostasis in growth and proximate composition and geographic variation in body morphology and timing of migration in juvenile Atlantic salmon (Salmo salar) have an adaptive basis. The populations studied were Rocky Brook and Sabbies River, tributaries of the Southwest Miramichi River, New Brunswick. Growth rates and proximate composition were very similar in the two populations under hatchery conditions. Genetic contributions to homeostasis in these traits were largely additive. The phenotypic expression of migratory behavior and the genetic control of timing were not quantifiable. A genetic basis to interpopulation variation in body morphology was demonstrated. Progeny from Rocky Brook which exhibits higher flows had more fusiform bodies and longer fins than progeny from Sabbies River when reared under identical conditions. Heritable variation in morphology and a demonstrated directional selection for greater fin size in high velocity environments support the hypothesis that these traits are adaptive. Adaptive polygenic variation between local populations stresses the need to delineate stocks on a functional basis so that species can be managed without significant loss of fitness and/or depletion of genetic variation in natural populations.Key words: quantitative genetics, heritability, adaptation, morphology, growth, proximate composition, migration, Atlantic salmon, interdemic variation, directional selection |
format |
Article in Journal/Newspaper |
author |
Riddell, Brian E. Leggett, William C. Saunders, Richard L. |
author_facet |
Riddell, Brian E. Leggett, William C. Saunders, Richard L. |
author_sort |
Riddell, Brian E. |
title |
Evidence of Adaptive Polygenic Variation Between Two Populations of Atlantic Salmon ( Salmo salar ) Native to Tributaries of the S. W. Miramichi River, N.B. |
title_short |
Evidence of Adaptive Polygenic Variation Between Two Populations of Atlantic Salmon ( Salmo salar ) Native to Tributaries of the S. W. Miramichi River, N.B. |
title_full |
Evidence of Adaptive Polygenic Variation Between Two Populations of Atlantic Salmon ( Salmo salar ) Native to Tributaries of the S. W. Miramichi River, N.B. |
title_fullStr |
Evidence of Adaptive Polygenic Variation Between Two Populations of Atlantic Salmon ( Salmo salar ) Native to Tributaries of the S. W. Miramichi River, N.B. |
title_full_unstemmed |
Evidence of Adaptive Polygenic Variation Between Two Populations of Atlantic Salmon ( Salmo salar ) Native to Tributaries of the S. W. Miramichi River, N.B. |
title_sort |
evidence of adaptive polygenic variation between two populations of atlantic salmon ( salmo salar ) native to tributaries of the s. w. miramichi river, n.b. |
publisher |
Canadian Science Publishing |
publishDate |
1981 |
url |
http://dx.doi.org/10.1139/f81-043 http://www.nrcresearchpress.com/doi/pdf/10.1139/f81-043 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 38, issue 3, page 321-333 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f81-043 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
38 |
container_issue |
3 |
container_start_page |
321 |
op_container_end_page |
333 |
_version_ |
1792498236100968448 |