Juveniles of pink and chum salmon in the Iska River (Sakhalin Bay, Okhotsk Sea) in the fresh-water period
Juveniles of pink and chum salmon are investigated in the Iska River flowing into the Okhotsk Sea. The pink juveniles begin their seaward migration in May, with the ice melting, the migration lasts about 40 days, approximately from May 20 to July 5. The seaward migration of chum juveniles begins in...
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Format: | Article in Journal/Newspaper |
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Transactions of the Pacific Research Institute of Fisheries and Oceanography
2015
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Online Access: | https://doi.org/10.26428/1606-9919-2015-182-55-68 https://doaj.org/article/685aa340dc8e45d4a4f4500ce62ed920 |
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ftdoajarticles:oai:doaj.org/article:685aa340dc8e45d4a4f4500ce62ed920 2023-10-09T21:54:59+02:00 Juveniles of pink and chum salmon in the Iska River (Sakhalin Bay, Okhotsk Sea) in the fresh-water period Albina N. Kanzeparova Sergey F. Zolotukhin Valery A. Balushkin 2015-09-01T00:00:00Z https://doi.org/10.26428/1606-9919-2015-182-55-68 https://doaj.org/article/685aa340dc8e45d4a4f4500ce62ed920 RU rus Transactions of the Pacific Research Institute of Fisheries and Oceanography https://izvestiya.tinro-center.ru/jour/article/view/267 https://doaj.org/toc/1606-9919 https://doaj.org/toc/2658-5510 1606-9919 2658-5510 doi:10.26428/1606-9919-2015-182-55-68 https://doaj.org/article/685aa340dc8e45d4a4f4500ce62ed920 Известия ТИНРО, Vol 182, Iss 3, Pp 55-68 (2015) горбуша кета учет численности биология скат р. иска охотское море Aquaculture. Fisheries. Angling SH1-691 article 2015 ftdoajarticles https://doi.org/10.26428/1606-9919-2015-182-55-68 2023-09-10T00:41:26Z Juveniles of pink and chum salmon are investigated in the Iska River flowing into the Okhotsk Sea. The pink juveniles begin their seaward migration in May, with the ice melting, the migration lasts about 40 days, approximately from May 20 to July 5. The seaward migration of chum juveniles begins in the same time but ends in 5-10 days later. The portion of pink salmon fry with the remains of yolk sac is 82-94 %; even in the end of their migration it is rather high, up to 76 %. This species juveniles begin to feed in the river, in particular in «dry» years, the portion of feeding fry increases with disappearance of the yolk sac up to 78 % (by the stomach fullness). Both pink and chum juveniles migrate at night only. Hydrological conditions influence on the timing of migration: it is close to normal dates in conditions of high water level and strong water flow but delayed in conditions of low water discharge (that’s why the portion of juveniles feeding in the river is higher in those years). Year-to-year dynamics of the juveniles and spawners abundance is traced for the 1951-2012. The pink salmon escapement to the Iska changed from 11.0 · 103 (in 2004) to 1344.4 · 103 (in 1958) ind., on average 280.0 · 103 ind. for even years and from 22.7 · 103 (in 1959) to 2005.8 · 103 (in 2007) ind., on average 372.9 · 103 ind. for odd years. The number of pink salmon downstream migrants changed from 0.8 · 106 (in 1954) to 40.9 · 106 (in 1964), on average 10.9 · 106 ind. for even years and from 1.0 · 106 (in 2005) to 41.8 · 106 (in 1957), on average 8.9 · 106 ind. for odd years. Article in Journal/Newspaper okhotsk sea Pink salmon Sakhalin Directory of Open Access Journals: DOAJ Articles Okhotsk Izvestiya TINRO 182 3 55 68 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
Russian |
topic |
горбуша кета учет численности биология скат р. иска охотское море Aquaculture. Fisheries. Angling SH1-691 |
spellingShingle |
горбуша кета учет численности биология скат р. иска охотское море Aquaculture. Fisheries. Angling SH1-691 Albina N. Kanzeparova Sergey F. Zolotukhin Valery A. Balushkin Juveniles of pink and chum salmon in the Iska River (Sakhalin Bay, Okhotsk Sea) in the fresh-water period |
topic_facet |
горбуша кета учет численности биология скат р. иска охотское море Aquaculture. Fisheries. Angling SH1-691 |
description |
Juveniles of pink and chum salmon are investigated in the Iska River flowing into the Okhotsk Sea. The pink juveniles begin their seaward migration in May, with the ice melting, the migration lasts about 40 days, approximately from May 20 to July 5. The seaward migration of chum juveniles begins in the same time but ends in 5-10 days later. The portion of pink salmon fry with the remains of yolk sac is 82-94 %; even in the end of their migration it is rather high, up to 76 %. This species juveniles begin to feed in the river, in particular in «dry» years, the portion of feeding fry increases with disappearance of the yolk sac up to 78 % (by the stomach fullness). Both pink and chum juveniles migrate at night only. Hydrological conditions influence on the timing of migration: it is close to normal dates in conditions of high water level and strong water flow but delayed in conditions of low water discharge (that’s why the portion of juveniles feeding in the river is higher in those years). Year-to-year dynamics of the juveniles and spawners abundance is traced for the 1951-2012. The pink salmon escapement to the Iska changed from 11.0 · 103 (in 2004) to 1344.4 · 103 (in 1958) ind., on average 280.0 · 103 ind. for even years and from 22.7 · 103 (in 1959) to 2005.8 · 103 (in 2007) ind., on average 372.9 · 103 ind. for odd years. The number of pink salmon downstream migrants changed from 0.8 · 106 (in 1954) to 40.9 · 106 (in 1964), on average 10.9 · 106 ind. for even years and from 1.0 · 106 (in 2005) to 41.8 · 106 (in 1957), on average 8.9 · 106 ind. for odd years. |
format |
Article in Journal/Newspaper |
author |
Albina N. Kanzeparova Sergey F. Zolotukhin Valery A. Balushkin |
author_facet |
Albina N. Kanzeparova Sergey F. Zolotukhin Valery A. Balushkin |
author_sort |
Albina N. Kanzeparova |
title |
Juveniles of pink and chum salmon in the Iska River (Sakhalin Bay, Okhotsk Sea) in the fresh-water period |
title_short |
Juveniles of pink and chum salmon in the Iska River (Sakhalin Bay, Okhotsk Sea) in the fresh-water period |
title_full |
Juveniles of pink and chum salmon in the Iska River (Sakhalin Bay, Okhotsk Sea) in the fresh-water period |
title_fullStr |
Juveniles of pink and chum salmon in the Iska River (Sakhalin Bay, Okhotsk Sea) in the fresh-water period |
title_full_unstemmed |
Juveniles of pink and chum salmon in the Iska River (Sakhalin Bay, Okhotsk Sea) in the fresh-water period |
title_sort |
juveniles of pink and chum salmon in the iska river (sakhalin bay, okhotsk sea) in the fresh-water period |
publisher |
Transactions of the Pacific Research Institute of Fisheries and Oceanography |
publishDate |
2015 |
url |
https://doi.org/10.26428/1606-9919-2015-182-55-68 https://doaj.org/article/685aa340dc8e45d4a4f4500ce62ed920 |
geographic |
Okhotsk |
geographic_facet |
Okhotsk |
genre |
okhotsk sea Pink salmon Sakhalin |
genre_facet |
okhotsk sea Pink salmon Sakhalin |
op_source |
Известия ТИНРО, Vol 182, Iss 3, Pp 55-68 (2015) |
op_relation |
https://izvestiya.tinro-center.ru/jour/article/view/267 https://doaj.org/toc/1606-9919 https://doaj.org/toc/2658-5510 1606-9919 2658-5510 doi:10.26428/1606-9919-2015-182-55-68 https://doaj.org/article/685aa340dc8e45d4a4f4500ce62ed920 |
op_doi |
https://doi.org/10.26428/1606-9919-2015-182-55-68 |
container_title |
Izvestiya TINRO |
container_volume |
182 |
container_issue |
3 |
container_start_page |
55 |
op_container_end_page |
68 |
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1779318758281576448 |