Diets and body condition of polar cod (Boreogadus saida) in the northern Bering Sea and Chukchi Sea
To understand trophic responses of polar cod Boreogadus saida (a key species in Arctic food webs) to changes in zooplankton and benthic invertebrate communities (prey), we compared its stomach contents and body condition between three regions with different environments: the northern Bering Sea (NB)...
Published in: | Polar Biology |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer
|
Subjects: | |
Online Access: | http://hdl.handle.net/2115/65797 https://doi.org/10.1007/s00300-015-1769-x |
id |
fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/65797 |
---|---|
record_format |
openpolar |
spelling |
fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/65797 2023-05-15T15:05:10+02:00 Diets and body condition of polar cod (Boreogadus saida) in the northern Bering Sea and Chukchi Sea Nakano, Tsubasa Matsuno, Kohei Nishizawa, Bungo Iwahara, Yuka Mitani, Yoko Yamamoto, Jun Sakurai, Yasunori Watanuki, Yutaka http://hdl.handle.net/2115/65797 https://doi.org/10.1007/s00300-015-1769-x eng eng Springer http://hdl.handle.net/2115/65797 Polar biology, 39(6): 1081-1086 http://dx.doi.org/10.1007/s00300-015-1769-x The final publication is available at link.springer.com Gelatinous zooplankton Lipid content Prey availability Regional differences Stomach fullness 660 article (author version) fthokunivhus https://doi.org/10.1007/s00300-015-1769-x 2022-11-18T01:03:55Z To understand trophic responses of polar cod Boreogadus saida (a key species in Arctic food webs) to changes in zooplankton and benthic invertebrate communities (prey), we compared its stomach contents and body condition between three regions with different environments: the northern Bering Sea (NB), southern Chukchi Sea (SC), and central Chukchi Sea (CC). Polar cod were sampled using a bottom trawl, and their potential prey species in the environment were sampled using a plankton net and a surface sediment sampler. Polar cod fed mainly on appendicularians in the NB and SC where copepods were the most abundant in the environment, while they fed on copepods, euphausiids, and gammarids in the CC where barnacle larvae were the most abundant species in plankton samples on average. The stomach fullness index of polar cod was higher in the NB and SC than CC, while their body condition index did not differ between these regions. The lower lipid content of appendicularians compared to other prey species is the most plausible explanation for this inconsistency. Article in Journal/Newspaper Arctic Bering Sea Boreogadus saida Chukchi Chukchi Sea Polar Biology polar cod Zooplankton Copepods Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Arctic Bering Sea Chukchi Sea Polar Biology 39 6 1081 1086 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
Gelatinous zooplankton Lipid content Prey availability Regional differences Stomach fullness 660 |
spellingShingle |
Gelatinous zooplankton Lipid content Prey availability Regional differences Stomach fullness 660 Nakano, Tsubasa Matsuno, Kohei Nishizawa, Bungo Iwahara, Yuka Mitani, Yoko Yamamoto, Jun Sakurai, Yasunori Watanuki, Yutaka Diets and body condition of polar cod (Boreogadus saida) in the northern Bering Sea and Chukchi Sea |
topic_facet |
Gelatinous zooplankton Lipid content Prey availability Regional differences Stomach fullness 660 |
description |
To understand trophic responses of polar cod Boreogadus saida (a key species in Arctic food webs) to changes in zooplankton and benthic invertebrate communities (prey), we compared its stomach contents and body condition between three regions with different environments: the northern Bering Sea (NB), southern Chukchi Sea (SC), and central Chukchi Sea (CC). Polar cod were sampled using a bottom trawl, and their potential prey species in the environment were sampled using a plankton net and a surface sediment sampler. Polar cod fed mainly on appendicularians in the NB and SC where copepods were the most abundant in the environment, while they fed on copepods, euphausiids, and gammarids in the CC where barnacle larvae were the most abundant species in plankton samples on average. The stomach fullness index of polar cod was higher in the NB and SC than CC, while their body condition index did not differ between these regions. The lower lipid content of appendicularians compared to other prey species is the most plausible explanation for this inconsistency. |
format |
Article in Journal/Newspaper |
author |
Nakano, Tsubasa Matsuno, Kohei Nishizawa, Bungo Iwahara, Yuka Mitani, Yoko Yamamoto, Jun Sakurai, Yasunori Watanuki, Yutaka |
author_facet |
Nakano, Tsubasa Matsuno, Kohei Nishizawa, Bungo Iwahara, Yuka Mitani, Yoko Yamamoto, Jun Sakurai, Yasunori Watanuki, Yutaka |
author_sort |
Nakano, Tsubasa |
title |
Diets and body condition of polar cod (Boreogadus saida) in the northern Bering Sea and Chukchi Sea |
title_short |
Diets and body condition of polar cod (Boreogadus saida) in the northern Bering Sea and Chukchi Sea |
title_full |
Diets and body condition of polar cod (Boreogadus saida) in the northern Bering Sea and Chukchi Sea |
title_fullStr |
Diets and body condition of polar cod (Boreogadus saida) in the northern Bering Sea and Chukchi Sea |
title_full_unstemmed |
Diets and body condition of polar cod (Boreogadus saida) in the northern Bering Sea and Chukchi Sea |
title_sort |
diets and body condition of polar cod (boreogadus saida) in the northern bering sea and chukchi sea |
publisher |
Springer |
url |
http://hdl.handle.net/2115/65797 https://doi.org/10.1007/s00300-015-1769-x |
geographic |
Arctic Bering Sea Chukchi Sea |
geographic_facet |
Arctic Bering Sea Chukchi Sea |
genre |
Arctic Bering Sea Boreogadus saida Chukchi Chukchi Sea Polar Biology polar cod Zooplankton Copepods |
genre_facet |
Arctic Bering Sea Boreogadus saida Chukchi Chukchi Sea Polar Biology polar cod Zooplankton Copepods |
op_relation |
http://hdl.handle.net/2115/65797 Polar biology, 39(6): 1081-1086 http://dx.doi.org/10.1007/s00300-015-1769-x |
op_rights |
The final publication is available at link.springer.com |
op_doi |
https://doi.org/10.1007/s00300-015-1769-x |
container_title |
Polar Biology |
container_volume |
39 |
container_issue |
6 |
container_start_page |
1081 |
op_container_end_page |
1086 |
_version_ |
1766336920796790784 |