Appendicularia in the Bering, Okhotsk, Chukchi Seas and North Pacific and their significance for feeding of nekton
Significance of larvaceans (class Appendicularia) for plankton community and feeding of nekton in the Far-Eastern Seas and North Pacific is underestimated, this group of species is poorly represented in scientific literature. The total biomass of larvaceans is below the stocks of dominant groups in...
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Transactions of the Pacific Research Institute of Fisheries and Oceanography
2022
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Online Access: | https://doi.org/10.26428/1606-9919-2022-202-390-408 https://doaj.org/article/80085efb88d44a71aba98132ad3956f8 |
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ftdoajarticles:oai:doaj.org/article:80085efb88d44a71aba98132ad3956f8 2023-08-27T04:09:00+02:00 Appendicularia in the Bering, Okhotsk, Chukchi Seas and North Pacific and their significance for feeding of nekton A. F. Volkov 2022-07-01T00:00:00Z https://doi.org/10.26428/1606-9919-2022-202-390-408 https://doaj.org/article/80085efb88d44a71aba98132ad3956f8 RU rus Transactions of the Pacific Research Institute of Fisheries and Oceanography https://izvestiya.tinro-center.ru/jour/article/view/732 https://doaj.org/toc/1606-9919 https://doaj.org/toc/2658-5510 1606-9919 2658-5510 doi:10.26428/1606-9919-2022-202-390-408 https://doaj.org/article/80085efb88d44a71aba98132ad3956f8 Известия ТИНРО, Vol 202, Iss 2, Pp 390-408 (2022) охотское море берингово чукотское сто аппендикулярия зоопланктон фракции нектон питание oikopleura fritillaria Aquaculture. Fisheries. Angling SH1-691 article 2022 ftdoajarticles https://doi.org/10.26428/1606-9919-2022-202-390-408 2023-08-06T00:41:16Z Significance of larvaceans (class Appendicularia) for plankton community and feeding of nekton in the Far-Eastern Seas and North Pacific is underestimated, this group of species is poorly represented in scientific literature. The total biomass of larvaceans is below the stocks of dominant groups in the large-sized zooplankton, as copepods, euphausiids, arrowworms, amphipods, and coelenterates, but accounted together with their shells (called «houses») they form a comparable stock. In the studied area, the class Appendicularia is represented by four species: widely distributed Oikopleura vanhoeffeni, O. labradoriensis, and Fritillaria borealis and F. sp. (perhaps F. pacifica) in the southern periphery of this area. Larger and more numerous oikopleurids dominate by both abundance and biomass and are presented in all size fractions of zooplankton, whereas fritillarids are presented mostly in the small-sized fraction. Larvaceans distribute mainly in the upper epipelagic layer (55–97 %), i.e. in the layer of their prey concentration; their density is the highest in the coastal zone with the depth < 50 m and decreases in deeper areas. They are a significant portion in the diet of many nekton species (41 out of 151 species in the Trofology database of TINRO), including basic commercial fishes, as pollock, salmons, herring, polar cod, mackerels, sardine and some others. Their mucus houses glowing at night, with the animal inside, whose tail vibrates constantly providing movement and nutrition, are attractive for many plankton-eaters. Appendicularia have a high occurrence in the food of all size-classes of nekton, though it decreases for larger-sized fish of such mass fish species, as walleye pollock and pink and chum salmons. Article in Journal/Newspaper Chukchi polar cod Берингов* Copepods Directory of Open Access Journals: DOAJ Articles Okhotsk Pacific Izvestiya TINRO 202 2 390 408 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
Russian |
topic |
охотское море берингово чукотское сто аппендикулярия зоопланктон фракции нектон питание oikopleura fritillaria Aquaculture. Fisheries. Angling SH1-691 |
spellingShingle |
охотское море берингово чукотское сто аппендикулярия зоопланктон фракции нектон питание oikopleura fritillaria Aquaculture. Fisheries. Angling SH1-691 A. F. Volkov Appendicularia in the Bering, Okhotsk, Chukchi Seas and North Pacific and their significance for feeding of nekton |
topic_facet |
охотское море берингово чукотское сто аппендикулярия зоопланктон фракции нектон питание oikopleura fritillaria Aquaculture. Fisheries. Angling SH1-691 |
description |
Significance of larvaceans (class Appendicularia) for plankton community and feeding of nekton in the Far-Eastern Seas and North Pacific is underestimated, this group of species is poorly represented in scientific literature. The total biomass of larvaceans is below the stocks of dominant groups in the large-sized zooplankton, as copepods, euphausiids, arrowworms, amphipods, and coelenterates, but accounted together with their shells (called «houses») they form a comparable stock. In the studied area, the class Appendicularia is represented by four species: widely distributed Oikopleura vanhoeffeni, O. labradoriensis, and Fritillaria borealis and F. sp. (perhaps F. pacifica) in the southern periphery of this area. Larger and more numerous oikopleurids dominate by both abundance and biomass and are presented in all size fractions of zooplankton, whereas fritillarids are presented mostly in the small-sized fraction. Larvaceans distribute mainly in the upper epipelagic layer (55–97 %), i.e. in the layer of their prey concentration; their density is the highest in the coastal zone with the depth < 50 m and decreases in deeper areas. They are a significant portion in the diet of many nekton species (41 out of 151 species in the Trofology database of TINRO), including basic commercial fishes, as pollock, salmons, herring, polar cod, mackerels, sardine and some others. Their mucus houses glowing at night, with the animal inside, whose tail vibrates constantly providing movement and nutrition, are attractive for many plankton-eaters. Appendicularia have a high occurrence in the food of all size-classes of nekton, though it decreases for larger-sized fish of such mass fish species, as walleye pollock and pink and chum salmons. |
format |
Article in Journal/Newspaper |
author |
A. F. Volkov |
author_facet |
A. F. Volkov |
author_sort |
A. F. Volkov |
title |
Appendicularia in the Bering, Okhotsk, Chukchi Seas and North Pacific and their significance for feeding of nekton |
title_short |
Appendicularia in the Bering, Okhotsk, Chukchi Seas and North Pacific and their significance for feeding of nekton |
title_full |
Appendicularia in the Bering, Okhotsk, Chukchi Seas and North Pacific and their significance for feeding of nekton |
title_fullStr |
Appendicularia in the Bering, Okhotsk, Chukchi Seas and North Pacific and their significance for feeding of nekton |
title_full_unstemmed |
Appendicularia in the Bering, Okhotsk, Chukchi Seas and North Pacific and their significance for feeding of nekton |
title_sort |
appendicularia in the bering, okhotsk, chukchi seas and north pacific and their significance for feeding of nekton |
publisher |
Transactions of the Pacific Research Institute of Fisheries and Oceanography |
publishDate |
2022 |
url |
https://doi.org/10.26428/1606-9919-2022-202-390-408 https://doaj.org/article/80085efb88d44a71aba98132ad3956f8 |
geographic |
Okhotsk Pacific |
geographic_facet |
Okhotsk Pacific |
genre |
Chukchi polar cod Берингов* Copepods |
genre_facet |
Chukchi polar cod Берингов* Copepods |
op_source |
Известия ТИНРО, Vol 202, Iss 2, Pp 390-408 (2022) |
op_relation |
https://izvestiya.tinro-center.ru/jour/article/view/732 https://doaj.org/toc/1606-9919 https://doaj.org/toc/2658-5510 1606-9919 2658-5510 doi:10.26428/1606-9919-2022-202-390-408 https://doaj.org/article/80085efb88d44a71aba98132ad3956f8 |
op_doi |
https://doi.org/10.26428/1606-9919-2022-202-390-408 |
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Izvestiya TINRO |
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202 |
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390 |
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