Feeding of mass fish species by natural and farmed juveniles of pacific salmons on example of the Obutonai River (Sakhalin Island)
Feeding of mass fish species caught in the Obutonai River (Sakhalin, Nevelsk district) was examined in May-July 2021, in the time of downstream migration of natural pink salmon Oncorhynchus gorbuscha juveniles and release of chum salmon O. keta juveniles from a fish hatchery. Three fish species capa...
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Transactions of the Pacific Research Institute of Fisheries and Oceanography
2022
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Online Access: | https://doi.org/10.26428/1606-9919-2022-202-521-534 https://doaj.org/article/6cbe53d0212f49a7a319d262fd453d50 |
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ftdoajarticles:oai:doaj.org/article:6cbe53d0212f49a7a319d262fd453d50 2023-10-09T21:55:00+02:00 Feeding of mass fish species by natural and farmed juveniles of pacific salmons on example of the Obutonai River (Sakhalin Island) O. V. Zelennikov D. V. Baginsky P. A. Sedunov 2022-10-01T00:00:00Z https://doi.org/10.26428/1606-9919-2022-202-521-534 https://doaj.org/article/6cbe53d0212f49a7a319d262fd453d50 RU rus Transactions of the Pacific Research Institute of Fisheries and Oceanography https://izvestiya.tinro-center.ru/jour/article/view/754 https://doaj.org/toc/1606-9919 https://doaj.org/toc/2658-5510 1606-9919 2658-5510 doi:10.26428/1606-9919-2022-202-521-534 https://doaj.org/article/6cbe53d0212f49a7a319d262fd453d50 Известия ТИНРО, Vol 202, Iss 3, Pp 521-534 (2022) сахалин река обутонай питание рыб молодь горбуши молодь кеты молодь симы кунджа мелкочешуйная красноперка Aquaculture. Fisheries. Angling SH1-691 article 2022 ftdoajarticles https://doi.org/10.26428/1606-9919-2022-202-521-534 2023-09-10T00:44:24Z Feeding of mass fish species caught in the Obutonai River (Sakhalin, Nevelsk district) was examined in May-July 2021, in the time of downstream migration of natural pink salmon Oncorhynchus gorbuscha juveniles and release of chum salmon O. keta juveniles from a fish hatchery. Three fish species capable to predate on salmon juveniles were presented in the catches in significant number, as whitespotted char Salvelinus leucomaenis, pacific redfin Tribolodon brandtii, and juveniles and dwarf males of masu salmon O. masou. These species occurred in different lower reaches of the river. Whitespotted char fed by both pink and chum juveniles, but was relatively few in number (single mass catch). Two-year-olds and dwarf males of masu salmon fed less intensively and pacific redfin fed exceptionally rarely on the migrating pink salmon juveniles of natural origin, but both these species consumed actively the chum juveniles released from a hatchery. The masu salmon juveniles had the maximum abundance in early June, then their number decreased. The pacific redfin abundance had complicated dynamics because of migrations both from the upper part of the river and from the sea; pacific redfin spawned in late June when ate exclusively eggs of the same species. Article in Journal/Newspaper Oncorhynchus gorbuscha Pink salmon Sakhalin Directory of Open Access Journals: DOAJ Articles Keta ENVELOPE(-19.455,-19.455,65.656,65.656) Pacific Izvestiya TINRO 202 3 521 534 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
Russian |
topic |
сахалин река обутонай питание рыб молодь горбуши молодь кеты молодь симы кунджа мелкочешуйная красноперка Aquaculture. Fisheries. Angling SH1-691 |
spellingShingle |
сахалин река обутонай питание рыб молодь горбуши молодь кеты молодь симы кунджа мелкочешуйная красноперка Aquaculture. Fisheries. Angling SH1-691 O. V. Zelennikov D. V. Baginsky P. A. Sedunov Feeding of mass fish species by natural and farmed juveniles of pacific salmons on example of the Obutonai River (Sakhalin Island) |
topic_facet |
сахалин река обутонай питание рыб молодь горбуши молодь кеты молодь симы кунджа мелкочешуйная красноперка Aquaculture. Fisheries. Angling SH1-691 |
description |
Feeding of mass fish species caught in the Obutonai River (Sakhalin, Nevelsk district) was examined in May-July 2021, in the time of downstream migration of natural pink salmon Oncorhynchus gorbuscha juveniles and release of chum salmon O. keta juveniles from a fish hatchery. Three fish species capable to predate on salmon juveniles were presented in the catches in significant number, as whitespotted char Salvelinus leucomaenis, pacific redfin Tribolodon brandtii, and juveniles and dwarf males of masu salmon O. masou. These species occurred in different lower reaches of the river. Whitespotted char fed by both pink and chum juveniles, but was relatively few in number (single mass catch). Two-year-olds and dwarf males of masu salmon fed less intensively and pacific redfin fed exceptionally rarely on the migrating pink salmon juveniles of natural origin, but both these species consumed actively the chum juveniles released from a hatchery. The masu salmon juveniles had the maximum abundance in early June, then their number decreased. The pacific redfin abundance had complicated dynamics because of migrations both from the upper part of the river and from the sea; pacific redfin spawned in late June when ate exclusively eggs of the same species. |
format |
Article in Journal/Newspaper |
author |
O. V. Zelennikov D. V. Baginsky P. A. Sedunov |
author_facet |
O. V. Zelennikov D. V. Baginsky P. A. Sedunov |
author_sort |
O. V. Zelennikov |
title |
Feeding of mass fish species by natural and farmed juveniles of pacific salmons on example of the Obutonai River (Sakhalin Island) |
title_short |
Feeding of mass fish species by natural and farmed juveniles of pacific salmons on example of the Obutonai River (Sakhalin Island) |
title_full |
Feeding of mass fish species by natural and farmed juveniles of pacific salmons on example of the Obutonai River (Sakhalin Island) |
title_fullStr |
Feeding of mass fish species by natural and farmed juveniles of pacific salmons on example of the Obutonai River (Sakhalin Island) |
title_full_unstemmed |
Feeding of mass fish species by natural and farmed juveniles of pacific salmons on example of the Obutonai River (Sakhalin Island) |
title_sort |
feeding of mass fish species by natural and farmed juveniles of pacific salmons on example of the obutonai river (sakhalin island) |
publisher |
Transactions of the Pacific Research Institute of Fisheries and Oceanography |
publishDate |
2022 |
url |
https://doi.org/10.26428/1606-9919-2022-202-521-534 https://doaj.org/article/6cbe53d0212f49a7a319d262fd453d50 |
long_lat |
ENVELOPE(-19.455,-19.455,65.656,65.656) |
geographic |
Keta Pacific |
geographic_facet |
Keta Pacific |
genre |
Oncorhynchus gorbuscha Pink salmon Sakhalin |
genre_facet |
Oncorhynchus gorbuscha Pink salmon Sakhalin |
op_source |
Известия ТИНРО, Vol 202, Iss 3, Pp 521-534 (2022) |
op_relation |
https://izvestiya.tinro-center.ru/jour/article/view/754 https://doaj.org/toc/1606-9919 https://doaj.org/toc/2658-5510 1606-9919 2658-5510 doi:10.26428/1606-9919-2022-202-521-534 https://doaj.org/article/6cbe53d0212f49a7a319d262fd453d50 |
op_doi |
https://doi.org/10.26428/1606-9919-2022-202-521-534 |
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Izvestiya TINRO |
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202 |
container_issue |
3 |
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521 |
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534 |
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1779318767854026752 |