Variation in Length and Body Depth of Pink Salmon ( Oncorhynchus gorbuscha ) and Chum Salmon ( O . keta ) in Southern British Columbia
The magnitude of within-stock variability of postorbital–hypural length and body depth was investigated for spawning pink salmon (Oncorhynchus gorbuscha) and chum salmon (O. keta) stocks. Variability of postorbital–hypural length and body depth of male pink salmon, all maturing at 2 yr of age, was g...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Language: | English |
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Canadian Science Publishing
1985
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Online Access: | http://dx.doi.org/10.1139/f85-040 http://www.nrcresearchpress.com/doi/pdf/10.1139/f85-040 |
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crcansciencepubl:10.1139/f85-040 2024-04-07T07:55:12+00:00 Variation in Length and Body Depth of Pink Salmon ( Oncorhynchus gorbuscha ) and Chum Salmon ( O . keta ) in Southern British Columbia Beacham, Terry D. Murray, Clyde B. 1985 http://dx.doi.org/10.1139/f85-040 http://www.nrcresearchpress.com/doi/pdf/10.1139/f85-040 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 42, issue 2, page 312-319 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1985 crcansciencepubl https://doi.org/10.1139/f85-040 2024-03-08T00:37:40Z The magnitude of within-stock variability of postorbital–hypural length and body depth was investigated for spawning pink salmon (Oncorhynchus gorbuscha) and chum salmon (O. keta) stocks. Variability of postorbital–hypural length and body depth of male pink salmon, all maturing at 2 yr of age, was greater than that for male chum salmon, maturing at ages of 3–5 yr. Female pink salmon were less variable for the two characters than all ages of female chum salmon, equally variable when only age 3 or age 4 female chum salmon were considered, and more variable in comparison with age 5 female chum salmon. Males were more variable for each character than females for both species. Small males of both species tend to resemble females when body depths are compared. It is suggested that small males mimic females to reduce aggression from larger males and gain access to spawning females. Article in Journal/Newspaper Oncorhynchus gorbuscha Pink salmon Canadian Science Publishing Keta ENVELOPE(-19.455,-19.455,65.656,65.656) Canadian Journal of Fisheries and Aquatic Sciences 42 2 312 319 |
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 Beacham, Terry D. Murray, Clyde B. Variation in Length and Body Depth of Pink Salmon ( Oncorhynchus gorbuscha ) and Chum Salmon ( O . keta ) in Southern British Columbia |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
The magnitude of within-stock variability of postorbital–hypural length and body depth was investigated for spawning pink salmon (Oncorhynchus gorbuscha) and chum salmon (O. keta) stocks. Variability of postorbital–hypural length and body depth of male pink salmon, all maturing at 2 yr of age, was greater than that for male chum salmon, maturing at ages of 3–5 yr. Female pink salmon were less variable for the two characters than all ages of female chum salmon, equally variable when only age 3 or age 4 female chum salmon were considered, and more variable in comparison with age 5 female chum salmon. Males were more variable for each character than females for both species. Small males of both species tend to resemble females when body depths are compared. It is suggested that small males mimic females to reduce aggression from larger males and gain access to spawning females. |
format |
Article in Journal/Newspaper |
author |
Beacham, Terry D. Murray, Clyde B. |
author_facet |
Beacham, Terry D. Murray, Clyde B. |
author_sort |
Beacham, Terry D. |
title |
Variation in Length and Body Depth of Pink Salmon ( Oncorhynchus gorbuscha ) and Chum Salmon ( O . keta ) in Southern British Columbia |
title_short |
Variation in Length and Body Depth of Pink Salmon ( Oncorhynchus gorbuscha ) and Chum Salmon ( O . keta ) in Southern British Columbia |
title_full |
Variation in Length and Body Depth of Pink Salmon ( Oncorhynchus gorbuscha ) and Chum Salmon ( O . keta ) in Southern British Columbia |
title_fullStr |
Variation in Length and Body Depth of Pink Salmon ( Oncorhynchus gorbuscha ) and Chum Salmon ( O . keta ) in Southern British Columbia |
title_full_unstemmed |
Variation in Length and Body Depth of Pink Salmon ( Oncorhynchus gorbuscha ) and Chum Salmon ( O . keta ) in Southern British Columbia |
title_sort |
variation in length and body depth of pink salmon ( oncorhynchus gorbuscha ) and chum salmon ( o . keta ) in southern british columbia |
publisher |
Canadian Science Publishing |
publishDate |
1985 |
url |
http://dx.doi.org/10.1139/f85-040 http://www.nrcresearchpress.com/doi/pdf/10.1139/f85-040 |
long_lat |
ENVELOPE(-19.455,-19.455,65.656,65.656) |
geographic |
Keta |
geographic_facet |
Keta |
genre |
Oncorhynchus gorbuscha Pink salmon |
genre_facet |
Oncorhynchus gorbuscha Pink salmon |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 42, issue 2, page 312-319 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f85-040 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
42 |
container_issue |
2 |
container_start_page |
312 |
op_container_end_page |
319 |
_version_ |
1795672205590265856 |