On importance of pink salmon reproduction for freshwater ecosystems
The report is based on observations of food composition in stomachs of common predatory fish species caught during recreational fisheries in the Fraser River basin, in particular Lake Morris (British Columbia, Canada), as cutthroat Oncorhynchus clarkii, mountain whitefish Prosopium williamsoni, and...
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| Format: | Article |
| Language: | Russian |
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Transactions of the Pacific Research Institute of Fisheries and Oceanography
2024-04-01
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| Series: | Известия ТИНРО |
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| Online Access: | https://izvestiya.tinro-center.ru/jour/article/view/943 |
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| author | V. I. Radchenko |
| author_facet | V. I. Radchenko |
| author_sort | V. I. Radchenko |
| collection | DOAJ |
| description | The report is based on observations of food composition in stomachs of common predatory fish species caught during recreational fisheries in the Fraser River basin, in particular Lake Morris (British Columbia, Canada), as cutthroat Oncorhynchus clarkii, mountain whitefish Prosopium williamsoni, and northern pikeminnow Ptychocheilus oregonensis. Up to 164, 126 and 28 fry of pink salmon Oncorhynchus gorbuscha were found in the stomachs of the listed fish species, respectively, during pink salmon downstream migration in April — early May. In this season, these species can consume a significant portion of their annual food ration, especially in energy terms. In the lake under con- sideration, these three predators are capable to eliminate pink salmon fry from the spawning of about 2,390 pink salmon in a small inflowing stream. Since the spawners of only the odd-years broodline of pink salmon reproduce in the rivers of the southern Pacific coast of Canada, the migration of their juveniles creates a significant difference in feeding conditions for predatory fish in adjacent years. |
| format | Article |
| id | doaj-art-2ceea15c1a8540dfb111b0cb0745c393 |
| institution | DOAJ |
| issn | 1606-9919 2658-5510 |
| language | Russian |
| publishDate | 2024-04-01 |
| publisher | Transactions of the Pacific Research Institute of Fisheries and Oceanography |
| record_format | Article |
| series | Известия ТИНРО |
| spelling | doaj-art-2ceea15c1a8540dfb111b0cb0745c3932025-08-20T02:54:35ZrusTransactions of the Pacific Research Institute of Fisheries and OceanographyИзвестия ТИНРО1606-99192658-55102024-04-010022123010.26428/losos_bull17-2024-221-230821On importance of pink salmon reproduction for freshwater ecosystemsV. I. Radchenko0Pacific branch of VNIRO (TINRO)The report is based on observations of food composition in stomachs of common predatory fish species caught during recreational fisheries in the Fraser River basin, in particular Lake Morris (British Columbia, Canada), as cutthroat Oncorhynchus clarkii, mountain whitefish Prosopium williamsoni, and northern pikeminnow Ptychocheilus oregonensis. Up to 164, 126 and 28 fry of pink salmon Oncorhynchus gorbuscha were found in the stomachs of the listed fish species, respectively, during pink salmon downstream migration in April — early May. In this season, these species can consume a significant portion of their annual food ration, especially in energy terms. In the lake under con- sideration, these three predators are capable to eliminate pink salmon fry from the spawning of about 2,390 pink salmon in a small inflowing stream. Since the spawners of only the odd-years broodline of pink salmon reproduce in the rivers of the southern Pacific coast of Canada, the migration of their juveniles creates a significant difference in feeding conditions for predatory fish in adjacent years.https://izvestiya.tinro-center.ru/jour/article/view/943pink salmondownstream migrating frypredationconsumptionfreshwater ecosystem |
| spellingShingle | V. I. Radchenko On importance of pink salmon reproduction for freshwater ecosystems Известия ТИНРО pink salmon downstream migrating fry predation consumption freshwater ecosystem |
| title | On importance of pink salmon reproduction for freshwater ecosystems |
| title_full | On importance of pink salmon reproduction for freshwater ecosystems |
| title_fullStr | On importance of pink salmon reproduction for freshwater ecosystems |
| title_full_unstemmed | On importance of pink salmon reproduction for freshwater ecosystems |
| title_short | On importance of pink salmon reproduction for freshwater ecosystems |
| title_sort | on importance of pink salmon reproduction for freshwater ecosystems |
| topic | pink salmon downstream migrating fry predation consumption freshwater ecosystem |
| url | https://izvestiya.tinro-center.ru/jour/article/view/943 |
| work_keys_str_mv | AT viradchenko onimportanceofpinksalmonreproductionforfreshwaterecosystems |