Long-term monitoring of size and feeding of resident yearlings of threespine stickleback (leiurus morph) in the littoral zone of Lake Azabachye (Kamchatka River basin)
Resident morph of threespine stickleback Gasterosteus aculeatus is an important competitor for food for sockeye salmon juveniles in their freshwater period of life. The most intense feeding interactions occur in the pelagic zone of lakes between sockeye salmon underyearlings and yearlings of residen...
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Transactions of the Pacific Research Institute of Fisheries and Oceanography
2018
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Online Access: | https://doi.org/10.26428/1606-9919-2018-194-99-112 https://doaj.org/article/96e02a90cfe84988b513331404ec1b61 |
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ftdoajarticles:oai:doaj.org/article:96e02a90cfe84988b513331404ec1b61 2023-10-09T21:53:05+02:00 Long-term monitoring of size and feeding of resident yearlings of threespine stickleback (leiurus morph) in the littoral zone of Lake Azabachye (Kamchatka River basin) V. F. Bugaev T. L. Vvedenskaya 2018-09-01T00:00:00Z https://doi.org/10.26428/1606-9919-2018-194-99-112 https://doaj.org/article/96e02a90cfe84988b513331404ec1b61 RU rus Transactions of the Pacific Research Institute of Fisheries and Oceanography https://izvestiya.tinro-center.ru/jour/article/view/401 https://doaj.org/toc/1606-9919 https://doaj.org/toc/2658-5510 1606-9919 2658-5510 doi:10.26428/1606-9919-2018-194-99-112 https://doaj.org/article/96e02a90cfe84988b513331404ec1b61 Известия ТИНРО, Vol 194, Iss 3, Pp 99-112 (2018) трехиглая колюшка морфа leiurus длина тела пищевой спектр хирономиды Aquaculture. Fisheries. Angling SH1-691 article 2018 ftdoajarticles https://doi.org/10.26428/1606-9919-2018-194-99-112 2023-09-10T00:41:26Z Resident morph of threespine stickleback Gasterosteus aculeatus is an important competitor for food for sockeye salmon juveniles in their freshwater period of life. The most intense feeding interactions occur in the pelagic zone of lakes between sockeye salmon underyearlings and yearlings of resident threespine stickleback. To evaluate this factor, the size and feeding were monitored for the resident yearlings of threespine stickleback (leiurus morph) in the littoral zone of Lake Azabachye annually on July 1 (±1 day) since 1985 (in late July — early August these yearlings migrate in mass to the pelagic zone of the lake). The mean body length varied from year to year between 29.02 ± 0.19 — 40.52 ± 0.33 mm, with some periodicity of 8–9 — 12 years presumably caused by environmental changes. Their main prey was chironomids, with average percentage in the food bolus 44.3 % (from 3.3 % in 2011 to 79.2 % in 2008). The mean stomach fullness of leiurus at the age 1+ varied by years in the range 27.8–254.5 ‱ and correlated significantly with year-to-year changes of the water temperature in the lake; the specimens with empty stomach were absent and the highest individual index reached 527.9 ‱. The consumption was the highest in 2011 and 2017 (mean indices of stomach fullness 215.7 and 254.5‱, respectively). Sockeye underyearlings were almost absent in the littoral zone in the period from late June to middle July. Article in Journal/Newspaper Kamchatka Directory of Open Access Journals: DOAJ Articles Sockeye ENVELOPE(-130.143,-130.143,54.160,54.160) Izvestiya TINRO 194 99 112 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
Russian |
topic |
трехиглая колюшка морфа leiurus длина тела пищевой спектр хирономиды Aquaculture. Fisheries. Angling SH1-691 |
spellingShingle |
трехиглая колюшка морфа leiurus длина тела пищевой спектр хирономиды Aquaculture. Fisheries. Angling SH1-691 V. F. Bugaev T. L. Vvedenskaya Long-term monitoring of size and feeding of resident yearlings of threespine stickleback (leiurus morph) in the littoral zone of Lake Azabachye (Kamchatka River basin) |
topic_facet |
трехиглая колюшка морфа leiurus длина тела пищевой спектр хирономиды Aquaculture. Fisheries. Angling SH1-691 |
description |
Resident morph of threespine stickleback Gasterosteus aculeatus is an important competitor for food for sockeye salmon juveniles in their freshwater period of life. The most intense feeding interactions occur in the pelagic zone of lakes between sockeye salmon underyearlings and yearlings of resident threespine stickleback. To evaluate this factor, the size and feeding were monitored for the resident yearlings of threespine stickleback (leiurus morph) in the littoral zone of Lake Azabachye annually on July 1 (±1 day) since 1985 (in late July — early August these yearlings migrate in mass to the pelagic zone of the lake). The mean body length varied from year to year between 29.02 ± 0.19 — 40.52 ± 0.33 mm, with some periodicity of 8–9 — 12 years presumably caused by environmental changes. Their main prey was chironomids, with average percentage in the food bolus 44.3 % (from 3.3 % in 2011 to 79.2 % in 2008). The mean stomach fullness of leiurus at the age 1+ varied by years in the range 27.8–254.5 ‱ and correlated significantly with year-to-year changes of the water temperature in the lake; the specimens with empty stomach were absent and the highest individual index reached 527.9 ‱. The consumption was the highest in 2011 and 2017 (mean indices of stomach fullness 215.7 and 254.5‱, respectively). Sockeye underyearlings were almost absent in the littoral zone in the period from late June to middle July. |
format |
Article in Journal/Newspaper |
author |
V. F. Bugaev T. L. Vvedenskaya |
author_facet |
V. F. Bugaev T. L. Vvedenskaya |
author_sort |
V. F. Bugaev |
title |
Long-term monitoring of size and feeding of resident yearlings of threespine stickleback (leiurus morph) in the littoral zone of Lake Azabachye (Kamchatka River basin) |
title_short |
Long-term monitoring of size and feeding of resident yearlings of threespine stickleback (leiurus morph) in the littoral zone of Lake Azabachye (Kamchatka River basin) |
title_full |
Long-term monitoring of size and feeding of resident yearlings of threespine stickleback (leiurus morph) in the littoral zone of Lake Azabachye (Kamchatka River basin) |
title_fullStr |
Long-term monitoring of size and feeding of resident yearlings of threespine stickleback (leiurus morph) in the littoral zone of Lake Azabachye (Kamchatka River basin) |
title_full_unstemmed |
Long-term monitoring of size and feeding of resident yearlings of threespine stickleback (leiurus morph) in the littoral zone of Lake Azabachye (Kamchatka River basin) |
title_sort |
long-term monitoring of size and feeding of resident yearlings of threespine stickleback (leiurus morph) in the littoral zone of lake azabachye (kamchatka river basin) |
publisher |
Transactions of the Pacific Research Institute of Fisheries and Oceanography |
publishDate |
2018 |
url |
https://doi.org/10.26428/1606-9919-2018-194-99-112 https://doaj.org/article/96e02a90cfe84988b513331404ec1b61 |
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 194, Iss 3, Pp 99-112 (2018) |
op_relation |
https://izvestiya.tinro-center.ru/jour/article/view/401 https://doaj.org/toc/1606-9919 https://doaj.org/toc/2658-5510 1606-9919 2658-5510 doi:10.26428/1606-9919-2018-194-99-112 https://doaj.org/article/96e02a90cfe84988b513331404ec1b61 |
op_doi |
https://doi.org/10.26428/1606-9919-2018-194-99-112 |
container_title |
Izvestiya TINRO |
container_volume |
194 |
container_start_page |
99 |
op_container_end_page |
112 |
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1779316323102228480 |