Distribution of larval and juvenile pelagic squids in the Kerguelen Axis region: oceanographic influence on size structure and evidence of spawning locations
Pelagic squids are a key component in Southern Ocean ecosystems. Most species have a circumpolar distribution that is patchy in relation to major oceanographic features. However, little is known regarding where and when they spawn, or subsequently, what environmental predictors drive the size distri...
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ftunivtasmania:oai:eprints.utas.edu.au:43879 2023-05-15T18:24:42+02:00 Distribution of larval and juvenile pelagic squids in the Kerguelen Axis region: oceanographic influence on size structure and evidence of spawning locations Lin, D Walters, A Bestley, S Zhu, G Chen, X Trebilco, R 2019 https://eprints.utas.edu.au/43879/ unknown Pergamon-Elsevier Science Ltd Lin, D, Walters, A orcid:0000-0002-7166-5689 , Bestley, S orcid:0000-0001-9342-669X , Zhu, G, Chen, X and Trebilco, R orcid:0000-0001-9712-8016 2019 , 'Distribution of larval and juvenile pelagic squids in the Kerguelen Axis region: oceanographic influence on size structure and evidence of spawning locations' , Deep-Sea Research Part II, vol. 174 , pp. 1-12 , doi:10.1016/j.dsr2.2019.07.003 <http://dx.doi.org/10.1016/j.dsr2.2019.07.003>. pelagic squids size distribution spawning habitat Kerguelen plateau Southern ocean Article PeerReviewed 2019 ftunivtasmania https://doi.org/10.1016/j.dsr2.2019.07.003 2022-02-21T23:18:22Z Pelagic squids are a key component in Southern Ocean ecosystems. Most species have a circumpolar distribution that is patchy in relation to major oceanographic features. However, little is known regarding where and when they spawn, or subsequently, what environmental predictors drive the size distribution particularly during early life stages. Here, we relate the size distribution of larval and juvenile squids to the oceanographic conditions around the southern Kerguelen Plateau. This is an important foraging area for many predators of squid, but there has been very little sampling effort for squids to date in that area. Seven squid species from six families were captured using depth-stratified mid-water trawls. The squids had a mantle length (ML) ranging from 7.3 to 680.1 mm, and were at their larval and juvenile form with the exception of two larger mature Galiteuthis glacialis (431.4 mm and 680.1 mm ML). Squids at stages 0 to I were predominant (ML 100 mm ML, above maturity stage I) were generally observed more in the southeast of the study domain. Squid size was positively associated with lower minimal water column temperature, higher surface chlorophyll-a concentration, and both the deepest and shallowest layers of the water column. The spatial distribution may be adaptive, helping to reduce inter- and intra-species competition and increase survivorship during early life stages. The reported relationships provide important new insights into the biophysical drivers of pelagic squid habitats around the Southern Ocean. These data significantly increase the known range of several Southern Ocean species and present implications for spawning habitat that warrant further investigation. Article in Journal/Newspaper Southern Ocean University of Tasmania: UTas ePrints Southern Ocean Kerguelen Deep Sea Research Part II: Topical Studies in Oceanography 174 104615 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
unknown |
topic |
pelagic squids size distribution spawning habitat Kerguelen plateau Southern ocean |
spellingShingle |
pelagic squids size distribution spawning habitat Kerguelen plateau Southern ocean Lin, D Walters, A Bestley, S Zhu, G Chen, X Trebilco, R Distribution of larval and juvenile pelagic squids in the Kerguelen Axis region: oceanographic influence on size structure and evidence of spawning locations |
topic_facet |
pelagic squids size distribution spawning habitat Kerguelen plateau Southern ocean |
description |
Pelagic squids are a key component in Southern Ocean ecosystems. Most species have a circumpolar distribution that is patchy in relation to major oceanographic features. However, little is known regarding where and when they spawn, or subsequently, what environmental predictors drive the size distribution particularly during early life stages. Here, we relate the size distribution of larval and juvenile squids to the oceanographic conditions around the southern Kerguelen Plateau. This is an important foraging area for many predators of squid, but there has been very little sampling effort for squids to date in that area. Seven squid species from six families were captured using depth-stratified mid-water trawls. The squids had a mantle length (ML) ranging from 7.3 to 680.1 mm, and were at their larval and juvenile form with the exception of two larger mature Galiteuthis glacialis (431.4 mm and 680.1 mm ML). Squids at stages 0 to I were predominant (ML 100 mm ML, above maturity stage I) were generally observed more in the southeast of the study domain. Squid size was positively associated with lower minimal water column temperature, higher surface chlorophyll-a concentration, and both the deepest and shallowest layers of the water column. The spatial distribution may be adaptive, helping to reduce inter- and intra-species competition and increase survivorship during early life stages. The reported relationships provide important new insights into the biophysical drivers of pelagic squid habitats around the Southern Ocean. These data significantly increase the known range of several Southern Ocean species and present implications for spawning habitat that warrant further investigation. |
format |
Article in Journal/Newspaper |
author |
Lin, D Walters, A Bestley, S Zhu, G Chen, X Trebilco, R |
author_facet |
Lin, D Walters, A Bestley, S Zhu, G Chen, X Trebilco, R |
author_sort |
Lin, D |
title |
Distribution of larval and juvenile pelagic squids in the Kerguelen Axis region: oceanographic influence on size structure and evidence of spawning locations |
title_short |
Distribution of larval and juvenile pelagic squids in the Kerguelen Axis region: oceanographic influence on size structure and evidence of spawning locations |
title_full |
Distribution of larval and juvenile pelagic squids in the Kerguelen Axis region: oceanographic influence on size structure and evidence of spawning locations |
title_fullStr |
Distribution of larval and juvenile pelagic squids in the Kerguelen Axis region: oceanographic influence on size structure and evidence of spawning locations |
title_full_unstemmed |
Distribution of larval and juvenile pelagic squids in the Kerguelen Axis region: oceanographic influence on size structure and evidence of spawning locations |
title_sort |
distribution of larval and juvenile pelagic squids in the kerguelen axis region: oceanographic influence on size structure and evidence of spawning locations |
publisher |
Pergamon-Elsevier Science Ltd |
publishDate |
2019 |
url |
https://eprints.utas.edu.au/43879/ |
geographic |
Southern Ocean Kerguelen |
geographic_facet |
Southern Ocean Kerguelen |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
Lin, D, Walters, A orcid:0000-0002-7166-5689 , Bestley, S orcid:0000-0001-9342-669X , Zhu, G, Chen, X and Trebilco, R orcid:0000-0001-9712-8016 2019 , 'Distribution of larval and juvenile pelagic squids in the Kerguelen Axis region: oceanographic influence on size structure and evidence of spawning locations' , Deep-Sea Research Part II, vol. 174 , pp. 1-12 , doi:10.1016/j.dsr2.2019.07.003 <http://dx.doi.org/10.1016/j.dsr2.2019.07.003>. |
op_doi |
https://doi.org/10.1016/j.dsr2.2019.07.003 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
174 |
container_start_page |
104615 |
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1766205516334235648 |