Size class segregation of Arctic cod (Boreogadus saida) in a shallow High Arctic embayment
Arctic cod (Boreogadus saida (Lepechin, 1774)) vertically segregate by size class in deep waters, but such dynamics had not been explored in shallow waters. Spatial distribution of Arctic cod was investigated in Resolute Bay, Nunavut, Canada (74°41N, 94°52W) from 20 July to 5 August 2012, using a co...
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Canadian Science Publishing
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ftdoajarticles:oai:doaj.org/article:05125f299d8a4405b9d5aa742d7cb70f 2023-05-15T14:23:39+02:00 Size class segregation of Arctic cod (Boreogadus saida) in a shallow High Arctic embayment S.T. Kessel R.E. Crawford N.E. Hussey S.V. Ivanova J.P. Holden A.T. Fisk 2021-03-01T00:00:00Z https://doi.org/10.1139/as-2019-0005 https://doaj.org/article/05125f299d8a4405b9d5aa742d7cb70f EN FR eng fre Canadian Science Publishing https://doi.org/10.1139/as-2019-0005 https://doaj.org/toc/2368-7460 doi:10.1139/as-2019-0005 2368-7460 https://doaj.org/article/05125f299d8a4405b9d5aa742d7cb70f Arctic Science, Vol 7, Iss 1, Pp 208-216 (2021) habitat partitioning hydroacoustics conspecific predation northwest passage resolute bay resource competition Environmental sciences GE1-350 Environmental engineering TA170-171 article 2021 ftdoajarticles https://doi.org/10.1139/as-2019-0005 2022-12-31T06:53:57Z Arctic cod (Boreogadus saida (Lepechin, 1774)) vertically segregate by size class in deep waters, but such dynamics had not been explored in shallow waters. Spatial distribution of Arctic cod was investigated in Resolute Bay, Nunavut, Canada (74°41N, 94°52W) from 20 July to 5 August 2012, using a combination of hydroacoustic survey and direct capture. Hydroacoustic surveys identified two high concentrations of Arctic cod, with larger individuals detected on the west side, and smaller individuals on the east. Catch data confirmed size segregation, with fish sampled on the west side of the bay significantly larger (mean = 174 mm total length (TL); 35.9 g weight (WT)) than those on the east (mean = 110 mm TL; 9.2 g WT). Fish density on the west was estimated at 3.52 fish·m−2, extrapolated to the full 0.52 km2 of the surveyed shoal to ∼1 830 400 fish and 65 711 kg (assuming a 35.9 g mean WT). Smaller fish on the east side were more abundant (9.32 fish·m−2; total abundance ∼11 836 400 fish or 108 894 kg; mean WT = 9.2 g). Horizontal habitat-partitioning was observed between Arctic cod size classes over a small geographic area (∼8 km2), most probably due to partitioned resources and to mitigate predation risk. Article in Journal/Newspaper Arctic Arctic cod Arctic Boreogadus saida Northwest passage Nunavut Resolute Bay Directory of Open Access Journals: DOAJ Articles Arctic Canada Northwest Passage Nunavut Resolute Bay ENVELOPE(-94.842,-94.842,74.677,74.677) Arctic Science 7 1 208 216 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English French |
topic |
habitat partitioning hydroacoustics conspecific predation northwest passage resolute bay resource competition Environmental sciences GE1-350 Environmental engineering TA170-171 |
spellingShingle |
habitat partitioning hydroacoustics conspecific predation northwest passage resolute bay resource competition Environmental sciences GE1-350 Environmental engineering TA170-171 S.T. Kessel R.E. Crawford N.E. Hussey S.V. Ivanova J.P. Holden A.T. Fisk Size class segregation of Arctic cod (Boreogadus saida) in a shallow High Arctic embayment |
topic_facet |
habitat partitioning hydroacoustics conspecific predation northwest passage resolute bay resource competition Environmental sciences GE1-350 Environmental engineering TA170-171 |
description |
Arctic cod (Boreogadus saida (Lepechin, 1774)) vertically segregate by size class in deep waters, but such dynamics had not been explored in shallow waters. Spatial distribution of Arctic cod was investigated in Resolute Bay, Nunavut, Canada (74°41N, 94°52W) from 20 July to 5 August 2012, using a combination of hydroacoustic survey and direct capture. Hydroacoustic surveys identified two high concentrations of Arctic cod, with larger individuals detected on the west side, and smaller individuals on the east. Catch data confirmed size segregation, with fish sampled on the west side of the bay significantly larger (mean = 174 mm total length (TL); 35.9 g weight (WT)) than those on the east (mean = 110 mm TL; 9.2 g WT). Fish density on the west was estimated at 3.52 fish·m−2, extrapolated to the full 0.52 km2 of the surveyed shoal to ∼1 830 400 fish and 65 711 kg (assuming a 35.9 g mean WT). Smaller fish on the east side were more abundant (9.32 fish·m−2; total abundance ∼11 836 400 fish or 108 894 kg; mean WT = 9.2 g). Horizontal habitat-partitioning was observed between Arctic cod size classes over a small geographic area (∼8 km2), most probably due to partitioned resources and to mitigate predation risk. |
format |
Article in Journal/Newspaper |
author |
S.T. Kessel R.E. Crawford N.E. Hussey S.V. Ivanova J.P. Holden A.T. Fisk |
author_facet |
S.T. Kessel R.E. Crawford N.E. Hussey S.V. Ivanova J.P. Holden A.T. Fisk |
author_sort |
S.T. Kessel |
title |
Size class segregation of Arctic cod (Boreogadus saida) in a shallow High Arctic embayment |
title_short |
Size class segregation of Arctic cod (Boreogadus saida) in a shallow High Arctic embayment |
title_full |
Size class segregation of Arctic cod (Boreogadus saida) in a shallow High Arctic embayment |
title_fullStr |
Size class segregation of Arctic cod (Boreogadus saida) in a shallow High Arctic embayment |
title_full_unstemmed |
Size class segregation of Arctic cod (Boreogadus saida) in a shallow High Arctic embayment |
title_sort |
size class segregation of arctic cod (boreogadus saida) in a shallow high arctic embayment |
publisher |
Canadian Science Publishing |
publishDate |
2021 |
url |
https://doi.org/10.1139/as-2019-0005 https://doaj.org/article/05125f299d8a4405b9d5aa742d7cb70f |
long_lat |
ENVELOPE(-94.842,-94.842,74.677,74.677) |
geographic |
Arctic Canada Northwest Passage Nunavut Resolute Bay |
geographic_facet |
Arctic Canada Northwest Passage Nunavut Resolute Bay |
genre |
Arctic Arctic cod Arctic Boreogadus saida Northwest passage Nunavut Resolute Bay |
genre_facet |
Arctic Arctic cod Arctic Boreogadus saida Northwest passage Nunavut Resolute Bay |
op_source |
Arctic Science, Vol 7, Iss 1, Pp 208-216 (2021) |
op_relation |
https://doi.org/10.1139/as-2019-0005 https://doaj.org/toc/2368-7460 doi:10.1139/as-2019-0005 2368-7460 https://doaj.org/article/05125f299d8a4405b9d5aa742d7cb70f |
op_doi |
https://doi.org/10.1139/as-2019-0005 |
container_title |
Arctic Science |
container_volume |
7 |
container_issue |
1 |
container_start_page |
208 |
op_container_end_page |
216 |
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1766296143457681408 |