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Planktonic cephalopods collected off East Antarctica during the 'BROKE' survey

journal contribution
posted on 2023-05-16, 13:59 authored by Jackson, GD, Finn, JK, Nicol, S
The composition and distribution of squid captured between January and March during the 1996 baseline research on oceanography, krill and the environment survey off East Antarctica (80-150°E) was investigated. A total of 195 individuals were captured. The species collected were Galiteuthis glacialis, Mesonychoteuthis hamiltoni, Histioteuthis atlantica, H. eltaninae, Alluroteuthis antarcticus Batoteuthis skolops and Pholidoteuthis boschmai. Concentrations of squid were low, ranging from 4.4 to 174.7 individuals 100,000-3. The majority of squid captured were G. glacialis (174 individuals, 89.2% of all squid captured), and most of these (n = 171) were small paralarvae <25 mm in mantle length. G. glacialis were distributed predominantly west of 120°E in water that was colder, and where the distance from the coastline of the southern boundary of the Antarctic circumpolar current (SB-ACC) was maximal. This water mass had greater concentrations of phytoplankton, was more productive and had maximal sea-ice extent compared to the water mass east of 120°E. G. glacialis was therefore more abundant in water where the majority of krill and krill predators were present compared to warmer oceanic waters of the ACC to the east, where salps dominated. © 2002 Elsevier Science Ltd. All rights reserved.

History

Publication title

Deep-Sea Research Part I

Volume

49

Issue

6

Pagination

1049-1054

ISSN

0967-0637

Department/School

Institute for Marine and Antarctic Studies

Publisher

Pergamom-Elsevier Science Ltd

Place of publication

Oxford

Repository Status

  • Restricted

Socio-economic Objectives

Marine biodiversity

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