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...
Published in: | Arctic Science |
---|---|
Main Authors: | , , , , , |
Format: | Text |
Language: | unknown |
Published: |
Scholarship at UWindsor
2021
|
Subjects: | |
Online Access: | https://scholar.uwindsor.ca/glierpub/277 https://doi.org/10.1139/as-2019-0005 |
id |
ftunivwindsor:oai:scholar.uwindsor.ca:glierpub-1279 |
---|---|
record_format |
openpolar |
spelling |
ftunivwindsor:oai:scholar.uwindsor.ca:glierpub-1279 2023-06-11T04:07:57+02:00 Size class segregation of arctic cod (Boreogadus saida) in a shallow high arctic embayment Kessel, S. T. Crawford, R. E. Hussey, N. E. Ivanova, S. V. Holden, J. P. Fisk, A. T. 2021-01-01T08:00:00Z https://scholar.uwindsor.ca/glierpub/277 https://doi.org/10.1139/as-2019-0005 unknown Scholarship at UWindsor https://scholar.uwindsor.ca/glierpub/277 doi:10.1139/as-2019-0005 https://doi.org/10.1139/as-2019-0005 Great Lakes Institute for Environmental Research Publications Conspecific predation Habitat partitioning Hydroacoustics Northwest Passage Resolute Bay Resource competition text 2021 ftunivwindsor https://doi.org/10.1139/as-2019-0005 2023-05-06T19:10:44Z 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 individuas 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 = 174mmtotal length (TL); 35.9 g weight (WT)) than those on the east (mean = 110mm 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. Text Arctic cod Arctic Boreogadus saida Northwest passage Nunavut Resolute Bay University of Windsor, Ontario: Scholarship at UWindsor Arctic Nunavut Canada Northwest Passage Resolute Bay ENVELOPE(-94.842,-94.842,74.677,74.677) Arctic Science 7 1 208 216 |
institution |
Open Polar |
collection |
University of Windsor, Ontario: Scholarship at UWindsor |
op_collection_id |
ftunivwindsor |
language |
unknown |
topic |
Conspecific predation Habitat partitioning Hydroacoustics Northwest Passage Resolute Bay Resource competition |
spellingShingle |
Conspecific predation Habitat partitioning Hydroacoustics Northwest Passage Resolute Bay Resource competition Kessel, S. T. Crawford, R. E. Hussey, N. E. Ivanova, S. V. Holden, J. P. Fisk, A. T. Size class segregation of arctic cod (Boreogadus saida) in a shallow high arctic embayment |
topic_facet |
Conspecific predation Habitat partitioning Hydroacoustics Northwest Passage Resolute Bay Resource competition |
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 individuas 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 = 174mmtotal length (TL); 35.9 g weight (WT)) than those on the east (mean = 110mm 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 |
Text |
author |
Kessel, S. T. Crawford, R. E. Hussey, N. E. Ivanova, S. V. Holden, J. P. Fisk, A. T. |
author_facet |
Kessel, S. T. Crawford, R. E. Hussey, N. E. Ivanova, S. V. Holden, J. P. Fisk, A. T. |
author_sort |
Kessel, S. T. |
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 |
Scholarship at UWindsor |
publishDate |
2021 |
url |
https://scholar.uwindsor.ca/glierpub/277 https://doi.org/10.1139/as-2019-0005 |
long_lat |
ENVELOPE(-94.842,-94.842,74.677,74.677) |
geographic |
Arctic Nunavut Canada Northwest Passage Resolute Bay |
geographic_facet |
Arctic Nunavut Canada Northwest Passage Resolute Bay |
genre |
Arctic cod Arctic Boreogadus saida Northwest passage Nunavut Resolute Bay |
genre_facet |
Arctic cod Arctic Boreogadus saida Northwest passage Nunavut Resolute Bay |
op_source |
Great Lakes Institute for Environmental Research Publications |
op_relation |
https://scholar.uwindsor.ca/glierpub/277 doi:10.1139/as-2019-0005 https://doi.org/10.1139/as-2019-0005 |
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 |
_version_ |
1768381063942373376 |