Sockeye salmon spawners in the basin of Nachikinskoye Lake (south-western Kamchatka): biology and abundance
State of the spawning part of the sockeye salmon population in Lake Nachikinskoye is characterized. Adults of the early race enter the lake from the sea in spring and early summer, mature at a depth and spawn from July to late August in three different loci — creeks, springs and lake, forming the co...
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Transactions of the Pacific Research Institute of Fisheries and Oceanography
2022
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Online Access: | https://doi.org/10.26428/1606-9919-2022-202-351-368 https://doaj.org/article/13fa0e46bae74e16b45b4e85fb710840 |
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ftdoajarticles:oai:doaj.org/article:13fa0e46bae74e16b45b4e85fb710840 2023-08-27T04:10:21+02:00 Sockeye salmon spawners in the basin of Nachikinskoye Lake (south-western Kamchatka): biology and abundance O. M. Zaporozhets G. V. Zaporozhets 2022-07-01T00:00:00Z https://doi.org/10.26428/1606-9919-2022-202-351-368 https://doaj.org/article/13fa0e46bae74e16b45b4e85fb710840 RU rus Transactions of the Pacific Research Institute of Fisheries and Oceanography https://izvestiya.tinro-center.ru/jour/article/view/730 https://doaj.org/toc/1606-9919 https://doaj.org/toc/2658-5510 1606-9919 2658-5510 doi:10.26428/1606-9919-2022-202-351-368 https://doaj.org/article/13fa0e46bae74e16b45b4e85fb710840 Известия ТИНРО, Vol 202, Iss 2, Pp 351-368 (2022) нерка расы биологические характеристики нерест динамика учет численности Aquaculture. Fisheries. Angling SH1-691 article 2022 ftdoajarticles https://doi.org/10.26428/1606-9919-2022-202-351-368 2023-08-06T00:41:16Z State of the spawning part of the sockeye salmon population in Lake Nachikinskoye is characterized. Adults of the early race enter the lake from the sea in spring and early summer, mature at a depth and spawn from July to late August in three different loci — creeks, springs and lake, forming the corresponding ecotypes. The late race representatives enter the lake in July-August, mature, and spawn until December in the same loci. The races differ in age structure, size and fecundity. Males dominate in both races, with a growing proportion of small-sized individuals. According to the materials of aero surveys, the number of fish on the spawning grounds decreased gradually until 2016. Recent data are presented for the number of sockeye salmon belonged to early and late races on certain spawning grounds in the lake basin, based on results of quadrocopter surveys in 2018–2021. The number of the early race spawners was ~100–400 × 103 ind., late race ~300–500 × 103 ind.; the fluctuations were not synchronous between the races. These great spawning stocks require reliable protection and detailed annual monitoring to predict further changes. Article in Journal/Newspaper Kamchatka Directory of Open Access Journals: DOAJ Articles Sockeye ENVELOPE(-130.143,-130.143,54.160,54.160) Izvestiya TINRO 202 2 351 368 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
Russian |
topic |
нерка расы биологические характеристики нерест динамика учет численности Aquaculture. Fisheries. Angling SH1-691 |
spellingShingle |
нерка расы биологические характеристики нерест динамика учет численности Aquaculture. Fisheries. Angling SH1-691 O. M. Zaporozhets G. V. Zaporozhets Sockeye salmon spawners in the basin of Nachikinskoye Lake (south-western Kamchatka): biology and abundance |
topic_facet |
нерка расы биологические характеристики нерест динамика учет численности Aquaculture. Fisheries. Angling SH1-691 |
description |
State of the spawning part of the sockeye salmon population in Lake Nachikinskoye is characterized. Adults of the early race enter the lake from the sea in spring and early summer, mature at a depth and spawn from July to late August in three different loci — creeks, springs and lake, forming the corresponding ecotypes. The late race representatives enter the lake in July-August, mature, and spawn until December in the same loci. The races differ in age structure, size and fecundity. Males dominate in both races, with a growing proportion of small-sized individuals. According to the materials of aero surveys, the number of fish on the spawning grounds decreased gradually until 2016. Recent data are presented for the number of sockeye salmon belonged to early and late races on certain spawning grounds in the lake basin, based on results of quadrocopter surveys in 2018–2021. The number of the early race spawners was ~100–400 × 103 ind., late race ~300–500 × 103 ind.; the fluctuations were not synchronous between the races. These great spawning stocks require reliable protection and detailed annual monitoring to predict further changes. |
format |
Article in Journal/Newspaper |
author |
O. M. Zaporozhets G. V. Zaporozhets |
author_facet |
O. M. Zaporozhets G. V. Zaporozhets |
author_sort |
O. M. Zaporozhets |
title |
Sockeye salmon spawners in the basin of Nachikinskoye Lake (south-western Kamchatka): biology and abundance |
title_short |
Sockeye salmon spawners in the basin of Nachikinskoye Lake (south-western Kamchatka): biology and abundance |
title_full |
Sockeye salmon spawners in the basin of Nachikinskoye Lake (south-western Kamchatka): biology and abundance |
title_fullStr |
Sockeye salmon spawners in the basin of Nachikinskoye Lake (south-western Kamchatka): biology and abundance |
title_full_unstemmed |
Sockeye salmon spawners in the basin of Nachikinskoye Lake (south-western Kamchatka): biology and abundance |
title_sort |
sockeye salmon spawners in the basin of nachikinskoye lake (south-western kamchatka): biology and abundance |
publisher |
Transactions of the Pacific Research Institute of Fisheries and Oceanography |
publishDate |
2022 |
url |
https://doi.org/10.26428/1606-9919-2022-202-351-368 https://doaj.org/article/13fa0e46bae74e16b45b4e85fb710840 |
long_lat |
ENVELOPE(-130.143,-130.143,54.160,54.160) |
geographic |
Sockeye |
geographic_facet |
Sockeye |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_source |
Известия ТИНРО, Vol 202, Iss 2, Pp 351-368 (2022) |
op_relation |
https://izvestiya.tinro-center.ru/jour/article/view/730 https://doaj.org/toc/1606-9919 https://doaj.org/toc/2658-5510 1606-9919 2658-5510 doi:10.26428/1606-9919-2022-202-351-368 https://doaj.org/article/13fa0e46bae74e16b45b4e85fb710840 |
op_doi |
https://doi.org/10.26428/1606-9919-2022-202-351-368 |
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Izvestiya TINRO |
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202 |
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2 |
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351 |
op_container_end_page |
368 |
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1775352308819820544 |