A Quantitative Evaluation of Survival to the Adult Stage and Other Characteristics of Pink Salmon ( Oncorhynchus gorbuscha ) Produced by a Revised Hatchery Method Which Simulates Optimal Natural Conditions
To evaluate a hatchery method utilizing a gravel medium and filtered water during incubation, comparisons were made between naturally and artificially propagated parts of one native stock of pink salmon (Oncorhynchus gorbuscha) of the Tsolum River, B.C. Yolk utilization (growth rate) of fry was unim...
Published in: | Journal of the Fisheries Research Board of Canada |
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Canadian Science Publishing
1972
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Online Access: | http://dx.doi.org/10.1139/f72-171 http://www.nrcresearchpress.com/doi/pdf/10.1139/f72-171 |
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crcansciencepubl:10.1139/f72-171 2023-12-17T10:48:10+01:00 A Quantitative Evaluation of Survival to the Adult Stage and Other Characteristics of Pink Salmon ( Oncorhynchus gorbuscha ) Produced by a Revised Hatchery Method Which Simulates Optimal Natural Conditions Bams, R. A. 1972 http://dx.doi.org/10.1139/f72-171 http://www.nrcresearchpress.com/doi/pdf/10.1139/f72-171 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Journal of the Fisheries Research Board of Canada volume 29, issue 8, page 1151-1167 ISSN 0015-296X General Medicine journal-article 1972 crcansciencepubl https://doi.org/10.1139/f72-171 2023-11-19T13:38:33Z To evaluate a hatchery method utilizing a gravel medium and filtered water during incubation, comparisons were made between naturally and artificially propagated parts of one native stock of pink salmon (Oncorhynchus gorbuscha) of the Tsolum River, B.C. Yolk utilization (growth rate) of fry was unimpeded in the hatchery environment, but hatchery fry migrated about 6 days earlier than creek fry. Hatchery survival was about six times that in the creek. The main test criterion — relative survival to the adult stage of fish from both treatments following migration from the creek — was tested by release of two similar groups of fry identified by a double finclip and recovery of marked adults upon return. Both groups survived at virtually the same rate. Numbers of actual mark recoveries were adequate to demonstrate statistically that survival of hatchery fish following release was not less than 90% of creek fry survival and that the final gain ratio of the hatchery treatment was not less than 5.44 (P <.005). Adult size, sex ratio, fecundity, and timing were not adversely affected by the hatchery treatment. Article in Journal/Newspaper Oncorhynchus gorbuscha Pink salmon Canadian Science Publishing (via Crossref) Journal of the Fisheries Research Board of Canada 29 8 1151 1167 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Medicine |
spellingShingle |
General Medicine Bams, R. A. A Quantitative Evaluation of Survival to the Adult Stage and Other Characteristics of Pink Salmon ( Oncorhynchus gorbuscha ) Produced by a Revised Hatchery Method Which Simulates Optimal Natural Conditions |
topic_facet |
General Medicine |
description |
To evaluate a hatchery method utilizing a gravel medium and filtered water during incubation, comparisons were made between naturally and artificially propagated parts of one native stock of pink salmon (Oncorhynchus gorbuscha) of the Tsolum River, B.C. Yolk utilization (growth rate) of fry was unimpeded in the hatchery environment, but hatchery fry migrated about 6 days earlier than creek fry. Hatchery survival was about six times that in the creek. The main test criterion — relative survival to the adult stage of fish from both treatments following migration from the creek — was tested by release of two similar groups of fry identified by a double finclip and recovery of marked adults upon return. Both groups survived at virtually the same rate. Numbers of actual mark recoveries were adequate to demonstrate statistically that survival of hatchery fish following release was not less than 90% of creek fry survival and that the final gain ratio of the hatchery treatment was not less than 5.44 (P <.005). Adult size, sex ratio, fecundity, and timing were not adversely affected by the hatchery treatment. |
format |
Article in Journal/Newspaper |
author |
Bams, R. A. |
author_facet |
Bams, R. A. |
author_sort |
Bams, R. A. |
title |
A Quantitative Evaluation of Survival to the Adult Stage and Other Characteristics of Pink Salmon ( Oncorhynchus gorbuscha ) Produced by a Revised Hatchery Method Which Simulates Optimal Natural Conditions |
title_short |
A Quantitative Evaluation of Survival to the Adult Stage and Other Characteristics of Pink Salmon ( Oncorhynchus gorbuscha ) Produced by a Revised Hatchery Method Which Simulates Optimal Natural Conditions |
title_full |
A Quantitative Evaluation of Survival to the Adult Stage and Other Characteristics of Pink Salmon ( Oncorhynchus gorbuscha ) Produced by a Revised Hatchery Method Which Simulates Optimal Natural Conditions |
title_fullStr |
A Quantitative Evaluation of Survival to the Adult Stage and Other Characteristics of Pink Salmon ( Oncorhynchus gorbuscha ) Produced by a Revised Hatchery Method Which Simulates Optimal Natural Conditions |
title_full_unstemmed |
A Quantitative Evaluation of Survival to the Adult Stage and Other Characteristics of Pink Salmon ( Oncorhynchus gorbuscha ) Produced by a Revised Hatchery Method Which Simulates Optimal Natural Conditions |
title_sort |
quantitative evaluation of survival to the adult stage and other characteristics of pink salmon ( oncorhynchus gorbuscha ) produced by a revised hatchery method which simulates optimal natural conditions |
publisher |
Canadian Science Publishing |
publishDate |
1972 |
url |
http://dx.doi.org/10.1139/f72-171 http://www.nrcresearchpress.com/doi/pdf/10.1139/f72-171 |
genre |
Oncorhynchus gorbuscha Pink salmon |
genre_facet |
Oncorhynchus gorbuscha Pink salmon |
op_source |
Journal of the Fisheries Research Board of Canada volume 29, issue 8, page 1151-1167 ISSN 0015-296X |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f72-171 |
container_title |
Journal of the Fisheries Research Board of Canada |
container_volume |
29 |
container_issue |
8 |
container_start_page |
1151 |
op_container_end_page |
1167 |
_version_ |
1785572264098398208 |