Fecundity and egg size variation in North American Pacific salmon ( Oncorhynchus)
We examined regional and latitudinal variation in fecundity and egg weight for five species of Pacific salmon ( Oncorhynchus ) along the Pacific coast of North America. Data were examined for 24 chum salmon, 15 pink salmon, 34 sockeye salmon, 44 chinook salmon, and 40 coho salmon populations from pu...
Published in: | Journal of Fish Biology |
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Language: | English |
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Online Access: | http://dx.doi.org/10.1111/j.1095-8649.1993.tb00354.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1993.tb00354.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1993.tb00354.x |
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crwiley:10.1111/j.1095-8649.1993.tb00354.x 2024-09-15T18:30:35+00:00 Fecundity and egg size variation in North American Pacific salmon ( Oncorhynchus) Beacham, T. D. Murray, C. B. 1993 http://dx.doi.org/10.1111/j.1095-8649.1993.tb00354.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1993.tb00354.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1993.tb00354.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 42, issue 4, page 485-508 ISSN 0022-1112 1095-8649 journal-article 1993 crwiley https://doi.org/10.1111/j.1095-8649.1993.tb00354.x 2024-08-06T04:13:36Z We examined regional and latitudinal variation in fecundity and egg weight for five species of Pacific salmon ( Oncorhynchus ) along the Pacific coast of North America. Data were examined for 24 chum salmon, 15 pink salmon, 34 sockeye salmon, 44 chinook salmon, and 40 coho salmon populations from published sources, unpublished Canadian hatchery records, our own laboratory investigations, and other unpublished sources. Substantial regional variation in fecundity and egg weight was observed, with salmon on the Queen Charlotte Islands and Vancouver Island in British Columbia generally having lower fecundity and larger egg size than nearby mainland populations. The relative distance of freshwater migration to the spawning grounds generally had a marked effect on both fecundity and egg size, with populations spawning in the upper portions in the drainages of large rivers like the Fraser River in British Columbia having reduced fecundity and egg size compared with coastal spawning populations. Fecundity was generally higher and egg size generally lower in more northern populations of sockeye, chinook, and coho salmon compared with southern ones. We suggest that egg size tends to be lower in northern populations of some species as a result of increased fecundity due to their older ages at maturity and a limited amount of energy that can be expended on egg production. Article in Journal/Newspaper Pink salmon Wiley Online Library Journal of Fish Biology 42 4 485 508 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
We examined regional and latitudinal variation in fecundity and egg weight for five species of Pacific salmon ( Oncorhynchus ) along the Pacific coast of North America. Data were examined for 24 chum salmon, 15 pink salmon, 34 sockeye salmon, 44 chinook salmon, and 40 coho salmon populations from published sources, unpublished Canadian hatchery records, our own laboratory investigations, and other unpublished sources. Substantial regional variation in fecundity and egg weight was observed, with salmon on the Queen Charlotte Islands and Vancouver Island in British Columbia generally having lower fecundity and larger egg size than nearby mainland populations. The relative distance of freshwater migration to the spawning grounds generally had a marked effect on both fecundity and egg size, with populations spawning in the upper portions in the drainages of large rivers like the Fraser River in British Columbia having reduced fecundity and egg size compared with coastal spawning populations. Fecundity was generally higher and egg size generally lower in more northern populations of sockeye, chinook, and coho salmon compared with southern ones. We suggest that egg size tends to be lower in northern populations of some species as a result of increased fecundity due to their older ages at maturity and a limited amount of energy that can be expended on egg production. |
format |
Article in Journal/Newspaper |
author |
Beacham, T. D. Murray, C. B. |
spellingShingle |
Beacham, T. D. Murray, C. B. Fecundity and egg size variation in North American Pacific salmon ( Oncorhynchus) |
author_facet |
Beacham, T. D. Murray, C. B. |
author_sort |
Beacham, T. D. |
title |
Fecundity and egg size variation in North American Pacific salmon ( Oncorhynchus) |
title_short |
Fecundity and egg size variation in North American Pacific salmon ( Oncorhynchus) |
title_full |
Fecundity and egg size variation in North American Pacific salmon ( Oncorhynchus) |
title_fullStr |
Fecundity and egg size variation in North American Pacific salmon ( Oncorhynchus) |
title_full_unstemmed |
Fecundity and egg size variation in North American Pacific salmon ( Oncorhynchus) |
title_sort |
fecundity and egg size variation in north american pacific salmon ( oncorhynchus) |
publisher |
Wiley |
publishDate |
1993 |
url |
http://dx.doi.org/10.1111/j.1095-8649.1993.tb00354.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1993.tb00354.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1993.tb00354.x |
genre |
Pink salmon |
genre_facet |
Pink salmon |
op_source |
Journal of Fish Biology volume 42, issue 4, page 485-508 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.1993.tb00354.x |
container_title |
Journal of Fish Biology |
container_volume |
42 |
container_issue |
4 |
container_start_page |
485 |
op_container_end_page |
508 |
_version_ |
1810472043053842432 |