Distribution of the early-life phase of the Antarctic squid Galiteuthis glacialis in relation to the hydrology of the Southern Ocean in the sector 15� to 30�E
During R.R.S. “Discovery” Cruise 100 in the Southern Ocean (1979), 620 specimens of the Antarctic cranchiid squid Galiteuthis glacialis (Chun) were caught in the RMT8 opening-closing net, to the south of the Antarctic Polar Front (APF). The catch was dominated by individuals <20 mm dorsal mantle...
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1986
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Online Access: | http://nora.nerc.ac.uk/id/eprint/523158/ https://doi.org/10.1007/BF00428629 |
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ftnerc:oai:nora.nerc.ac.uk:523158 2023-05-15T13:41:43+02:00 Distribution of the early-life phase of the Antarctic squid Galiteuthis glacialis in relation to the hydrology of the Southern Ocean in the sector 15� to 30�E Rodhouse, Paul G. Clarke, M.R. 1986 http://nora.nerc.ac.uk/id/eprint/523158/ https://doi.org/10.1007/BF00428629 unknown Springer Rodhouse, Paul G.; Clarke, M.R. 1986 Distribution of the early-life phase of the Antarctic squid Galiteuthis glacialis in relation to the hydrology of the Southern Ocean in the sector 15� to 30�E. Marine Biology, 91 (3). 353-357. https://doi.org/10.1007/BF00428629 <https://doi.org/10.1007/BF00428629> Publication - Article PeerReviewed 1986 ftnerc https://doi.org/10.1007/BF00428629 2023-02-04T19:48:15Z During R.R.S. “Discovery” Cruise 100 in the Southern Ocean (1979), 620 specimens of the Antarctic cranchiid squid Galiteuthis glacialis (Chun) were caught in the RMT8 opening-closing net, to the south of the Antarctic Polar Front (APF). The catch was dominated by individuals <20 mm dorsal mantle length (DML) and, apart from two specimens, the rest of the catch was <60 mm DML. Two larger squid (255 mm DML) were both immature and apparently female. The species is concentrated at a depth of 300 to 400 m; there is evidence of ontogenetic spreading and a shift in the modal depth of the population from the 300 to 400 m horizon in daylight to the 200 to 300 m horizon in darkness. The collection confirms the circumpolar distribution of the species and supports previous evidence that it rarely, if ever, occurs to the north of the APF. As in Mesonychoteuthis hamiltoni, the only other species of cranchiid squid known to occur south of the APF, the early-life phase of G. glacialis is concentrated in the upper zone of the “warm deep water” beneath the Antarctic surface layer where, putatively, there is a zone of enhanced biological activity. Article in Journal/Newspaper Antarc* Antarctic Antarctic Squid DML Mesonychoteuthis hamiltoni Southern Ocean Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean The Antarctic Marine Biology 91 3 353 357 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
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unknown |
description |
During R.R.S. “Discovery” Cruise 100 in the Southern Ocean (1979), 620 specimens of the Antarctic cranchiid squid Galiteuthis glacialis (Chun) were caught in the RMT8 opening-closing net, to the south of the Antarctic Polar Front (APF). The catch was dominated by individuals <20 mm dorsal mantle length (DML) and, apart from two specimens, the rest of the catch was <60 mm DML. Two larger squid (255 mm DML) were both immature and apparently female. The species is concentrated at a depth of 300 to 400 m; there is evidence of ontogenetic spreading and a shift in the modal depth of the population from the 300 to 400 m horizon in daylight to the 200 to 300 m horizon in darkness. The collection confirms the circumpolar distribution of the species and supports previous evidence that it rarely, if ever, occurs to the north of the APF. As in Mesonychoteuthis hamiltoni, the only other species of cranchiid squid known to occur south of the APF, the early-life phase of G. glacialis is concentrated in the upper zone of the “warm deep water” beneath the Antarctic surface layer where, putatively, there is a zone of enhanced biological activity. |
format |
Article in Journal/Newspaper |
author |
Rodhouse, Paul G. Clarke, M.R. |
spellingShingle |
Rodhouse, Paul G. Clarke, M.R. Distribution of the early-life phase of the Antarctic squid Galiteuthis glacialis in relation to the hydrology of the Southern Ocean in the sector 15� to 30�E |
author_facet |
Rodhouse, Paul G. Clarke, M.R. |
author_sort |
Rodhouse, Paul G. |
title |
Distribution of the early-life phase of the Antarctic squid Galiteuthis glacialis in relation to the hydrology of the Southern Ocean in the sector 15� to 30�E |
title_short |
Distribution of the early-life phase of the Antarctic squid Galiteuthis glacialis in relation to the hydrology of the Southern Ocean in the sector 15� to 30�E |
title_full |
Distribution of the early-life phase of the Antarctic squid Galiteuthis glacialis in relation to the hydrology of the Southern Ocean in the sector 15� to 30�E |
title_fullStr |
Distribution of the early-life phase of the Antarctic squid Galiteuthis glacialis in relation to the hydrology of the Southern Ocean in the sector 15� to 30�E |
title_full_unstemmed |
Distribution of the early-life phase of the Antarctic squid Galiteuthis glacialis in relation to the hydrology of the Southern Ocean in the sector 15� to 30�E |
title_sort |
distribution of the early-life phase of the antarctic squid galiteuthis glacialis in relation to the hydrology of the southern ocean in the sector 15� to 30�e |
publisher |
Springer |
publishDate |
1986 |
url |
http://nora.nerc.ac.uk/id/eprint/523158/ https://doi.org/10.1007/BF00428629 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctic Squid DML Mesonychoteuthis hamiltoni Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Squid DML Mesonychoteuthis hamiltoni Southern Ocean |
op_relation |
Rodhouse, Paul G.; Clarke, M.R. 1986 Distribution of the early-life phase of the Antarctic squid Galiteuthis glacialis in relation to the hydrology of the Southern Ocean in the sector 15� to 30�E. Marine Biology, 91 (3). 353-357. https://doi.org/10.1007/BF00428629 <https://doi.org/10.1007/BF00428629> |
op_doi |
https://doi.org/10.1007/BF00428629 |
container_title |
Marine Biology |
container_volume |
91 |
container_issue |
3 |
container_start_page |
353 |
op_container_end_page |
357 |
_version_ |
1766154765117423616 |