Effects of natal water dilution on the migration of Pacific salmon in a regulated river
Abstract Adult salmon are guided by chemical cues from their natal water during the spawning migration. Consequently, hydroelectric activities can have negative effects on adult salmon navigation if they alter the chemical properties of the homing environment. We conducted riverside experiments to e...
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crwiley:10.1002/rra.3347 2024-09-15T18:28:41+00:00 Effects of natal water dilution on the migration of Pacific salmon in a regulated river Bett, Nolan N. Hinch, Scott G. Casselman, Matthew T. Canadian Network for Research and Innovation in Machining Technology, Natural Sciences and Engineering Research Council of Canada BC Hydro 2018 http://dx.doi.org/10.1002/rra.3347 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Frra.3347 https://onlinelibrary.wiley.com/doi/pdf/10.1002/rra.3347 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor River Research and Applications volume 34, issue 9, page 1151-1157 ISSN 1535-1459 1535-1467 journal-article 2018 crwiley https://doi.org/10.1002/rra.3347 2024-08-01T04:23:01Z Abstract Adult salmon are guided by chemical cues from their natal water during the spawning migration. Consequently, hydroelectric activities can have negative effects on adult salmon navigation if they alter the chemical properties of the homing environment. We conducted riverside experiments to examine the effects of natal water dilution resulting from hydroelectric operations on upstream navigation in a British Columbia river and the efficacy of current dilution management in providing clear migratory cues for two local populations of sockeye salmon ( Oncorhynchus nerka ) and a population of pink salmon ( Oncorhynchus gorbuscha ). We found that both sockeye populations exhibited behavioural preferences for pure natal water when compared with various levels of diluted natal water, whereas pink salmon, which spawn throughout the system and exhibit lower levels of natal site fidelity, appeared unaffected by natal water dilution. Our findings confirmed that current management operations were appropriate for ensuring timely migration to spawning grounds and highlight the potential effects of alterations to water odour properties on salmon migrations. Article in Journal/Newspaper Oncorhynchus gorbuscha Pink salmon Wiley Online Library River Research and Applications 34 9 1151 1157 |
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English |
description |
Abstract Adult salmon are guided by chemical cues from their natal water during the spawning migration. Consequently, hydroelectric activities can have negative effects on adult salmon navigation if they alter the chemical properties of the homing environment. We conducted riverside experiments to examine the effects of natal water dilution resulting from hydroelectric operations on upstream navigation in a British Columbia river and the efficacy of current dilution management in providing clear migratory cues for two local populations of sockeye salmon ( Oncorhynchus nerka ) and a population of pink salmon ( Oncorhynchus gorbuscha ). We found that both sockeye populations exhibited behavioural preferences for pure natal water when compared with various levels of diluted natal water, whereas pink salmon, which spawn throughout the system and exhibit lower levels of natal site fidelity, appeared unaffected by natal water dilution. Our findings confirmed that current management operations were appropriate for ensuring timely migration to spawning grounds and highlight the potential effects of alterations to water odour properties on salmon migrations. |
author2 |
Canadian Network for Research and Innovation in Machining Technology, Natural Sciences and Engineering Research Council of Canada BC Hydro |
format |
Article in Journal/Newspaper |
author |
Bett, Nolan N. Hinch, Scott G. Casselman, Matthew T. |
spellingShingle |
Bett, Nolan N. Hinch, Scott G. Casselman, Matthew T. Effects of natal water dilution on the migration of Pacific salmon in a regulated river |
author_facet |
Bett, Nolan N. Hinch, Scott G. Casselman, Matthew T. |
author_sort |
Bett, Nolan N. |
title |
Effects of natal water dilution on the migration of Pacific salmon in a regulated river |
title_short |
Effects of natal water dilution on the migration of Pacific salmon in a regulated river |
title_full |
Effects of natal water dilution on the migration of Pacific salmon in a regulated river |
title_fullStr |
Effects of natal water dilution on the migration of Pacific salmon in a regulated river |
title_full_unstemmed |
Effects of natal water dilution on the migration of Pacific salmon in a regulated river |
title_sort |
effects of natal water dilution on the migration of pacific salmon in a regulated river |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1002/rra.3347 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Frra.3347 https://onlinelibrary.wiley.com/doi/pdf/10.1002/rra.3347 |
genre |
Oncorhynchus gorbuscha Pink salmon |
genre_facet |
Oncorhynchus gorbuscha Pink salmon |
op_source |
River Research and Applications volume 34, issue 9, page 1151-1157 ISSN 1535-1459 1535-1467 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/rra.3347 |
container_title |
River Research and Applications |
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34 |
container_issue |
9 |
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1151 |
op_container_end_page |
1157 |
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1810470138574536704 |