Dynamics of population parameters for pike Esox lucius L. (Esocidae) from the Anadyr River in the period of 1971-2010
Samples of pike were collected by Lab. of Ichthyology, IBPN FEB RAS in the middle stream of the Anadyr River at Markovo in June-September of 1971-2010 and processed by standard methods; in total 2410 specimens were analyzed. The pike population changed significantly during the period of observation:...
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Transactions of the Pacific Research Institute of Fisheries and Oceanography
2014
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ftdoajarticles:oai:doaj.org/article:5ed9fc94ad0344fc9df229271ac35536 2023-10-09T21:44:31+02:00 Dynamics of population parameters for pike Esox lucius L. (Esocidae) from the Anadyr River in the period of 1971-2010 Sergey I. Grunin 2014-12-01T00:00:00Z https://doi.org/10.26428/1606-9919-2014-179-45-54 https://doaj.org/article/5ed9fc94ad0344fc9df229271ac35536 RU rus Transactions of the Pacific Research Institute of Fisheries and Oceanography https://izvestiya.tinro-center.ru/jour/article/view/221 https://doaj.org/toc/1606-9919 https://doaj.org/toc/2658-5510 1606-9919 2658-5510 doi:10.26428/1606-9919-2014-179-45-54 https://doaj.org/article/5ed9fc94ad0344fc9df229271ac35536 Известия ТИНРО, Vol 179, Iss 4, Pp 45-54 (2014) обыкновенная щука р. анадырь размерно-возрастная структура линейный и весовой рост уравнение берталанфи плодовитость промысел Aquaculture. Fisheries. Angling SH1-691 article 2014 ftdoajarticles https://doi.org/10.26428/1606-9919-2014-179-45-54 2023-09-10T00:41:26Z Samples of pike were collected by Lab. of Ichthyology, IBPN FEB RAS in the middle stream of the Anadyr River at Markovo in June-September of 1971-2010 and processed by standard methods; in total 2410 specimens were analyzed. The pike population changed significantly during the period of observation: the fish in catches became smaller and younger, growth rate decreased, and absolute and relative fecundity increased, mainly under impact of fishery, including industrial one that intensified in 1970-1980s. As the result, the pike abundance decreased in 1980s, and the first-spawning females and males became to prevail in its catches. Further decreasing of the abundance was able to promote a reduction of competition in the population. The population could be restored only after considerable decrease of fishing pressure, or banning of the species fishery, that would improve the feeding conditions. Recent lowering of the fishing pressure due to low stock causes partial recovery of the population accompanied by heightening of elder fish portion. Now the fish spawned several times prevail in the catches. However, the growth rate and females fecundity still differ from the values typical for the 1970s. Partial recovery of the pike population should be accounted in estimations of its predatory on other fishes in the Anadyr River, including commercial species. Article in Journal/Newspaper Anadyr Anadyr' Щука Directory of Open Access Journals: DOAJ Articles Anadyr ENVELOPE(177.510,177.510,64.734,64.734) Anadyr River ENVELOPE(177.924,177.924,64.489,64.489) Anadyr’ ENVELOPE(176.233,176.233,64.882,64.882) Izvestiya TINRO 179 4 45 54 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
Russian |
topic |
обыкновенная щука р. анадырь размерно-возрастная структура линейный и весовой рост уравнение берталанфи плодовитость промысел Aquaculture. Fisheries. Angling SH1-691 |
spellingShingle |
обыкновенная щука р. анадырь размерно-возрастная структура линейный и весовой рост уравнение берталанфи плодовитость промысел Aquaculture. Fisheries. Angling SH1-691 Sergey I. Grunin Dynamics of population parameters for pike Esox lucius L. (Esocidae) from the Anadyr River in the period of 1971-2010 |
topic_facet |
обыкновенная щука р. анадырь размерно-возрастная структура линейный и весовой рост уравнение берталанфи плодовитость промысел Aquaculture. Fisheries. Angling SH1-691 |
description |
Samples of pike were collected by Lab. of Ichthyology, IBPN FEB RAS in the middle stream of the Anadyr River at Markovo in June-September of 1971-2010 and processed by standard methods; in total 2410 specimens were analyzed. The pike population changed significantly during the period of observation: the fish in catches became smaller and younger, growth rate decreased, and absolute and relative fecundity increased, mainly under impact of fishery, including industrial one that intensified in 1970-1980s. As the result, the pike abundance decreased in 1980s, and the first-spawning females and males became to prevail in its catches. Further decreasing of the abundance was able to promote a reduction of competition in the population. The population could be restored only after considerable decrease of fishing pressure, or banning of the species fishery, that would improve the feeding conditions. Recent lowering of the fishing pressure due to low stock causes partial recovery of the population accompanied by heightening of elder fish portion. Now the fish spawned several times prevail in the catches. However, the growth rate and females fecundity still differ from the values typical for the 1970s. Partial recovery of the pike population should be accounted in estimations of its predatory on other fishes in the Anadyr River, including commercial species. |
format |
Article in Journal/Newspaper |
author |
Sergey I. Grunin |
author_facet |
Sergey I. Grunin |
author_sort |
Sergey I. Grunin |
title |
Dynamics of population parameters for pike Esox lucius L. (Esocidae) from the Anadyr River in the period of 1971-2010 |
title_short |
Dynamics of population parameters for pike Esox lucius L. (Esocidae) from the Anadyr River in the period of 1971-2010 |
title_full |
Dynamics of population parameters for pike Esox lucius L. (Esocidae) from the Anadyr River in the period of 1971-2010 |
title_fullStr |
Dynamics of population parameters for pike Esox lucius L. (Esocidae) from the Anadyr River in the period of 1971-2010 |
title_full_unstemmed |
Dynamics of population parameters for pike Esox lucius L. (Esocidae) from the Anadyr River in the period of 1971-2010 |
title_sort |
dynamics of population parameters for pike esox lucius l. (esocidae) from the anadyr river in the period of 1971-2010 |
publisher |
Transactions of the Pacific Research Institute of Fisheries and Oceanography |
publishDate |
2014 |
url |
https://doi.org/10.26428/1606-9919-2014-179-45-54 https://doaj.org/article/5ed9fc94ad0344fc9df229271ac35536 |
long_lat |
ENVELOPE(177.510,177.510,64.734,64.734) ENVELOPE(177.924,177.924,64.489,64.489) ENVELOPE(176.233,176.233,64.882,64.882) |
geographic |
Anadyr Anadyr River Anadyr’ |
geographic_facet |
Anadyr Anadyr River Anadyr’ |
genre |
Anadyr Anadyr' Щука |
genre_facet |
Anadyr Anadyr' Щука |
op_source |
Известия ТИНРО, Vol 179, Iss 4, Pp 45-54 (2014) |
op_relation |
https://izvestiya.tinro-center.ru/jour/article/view/221 https://doaj.org/toc/1606-9919 https://doaj.org/toc/2658-5510 1606-9919 2658-5510 doi:10.26428/1606-9919-2014-179-45-54 https://doaj.org/article/5ed9fc94ad0344fc9df229271ac35536 |
op_doi |
https://doi.org/10.26428/1606-9919-2014-179-45-54 |
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Izvestiya TINRO |
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