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Diet of the Antarctic starry skate Amblyraja georgiana (Rajidae, Chondrichthyes) at South Georgia (Southern Ocean)

Diet of the Antarctic starry skate Amblyraja georgiana (Rajidae, Chondrichthyes) at South Georgia (Southern Ocean)
Diet of the Antarctic starry skate Amblyraja georgiana (Rajidae, Chondrichthyes) at South Georgia (Southern Ocean)
Stomach contents were identified from 206 Antarctic starry skate (Amblyraja georgiana) that were collected during three groundfish surveys (September 2007, April 2008 and January 2009) at South Georgia, Southern Ocean. The diet of A. georgiana varied with skate size and between years. Preferred prey included fish (particularly for larger individuals) and Antarctic krill, Euphausia superba, as well as amphipods, polychaetes and other benthic fauna. The skate A. georgiana appears to be an opportunistic predator, and the clear presence of Antarctic krill in this demersal predator’s diet may indicate a benthic habit of this euphausiid species, which has hitherto mainly been considered as occupying a purely pelagic niche.
Feeding ecology, Rajidae, Elasmobranch, Chondrichthyes, Euphausia superba, Krill
0722-4060
389-396
Main, Charlotte E.
c6db45a3-fe7e-4651-94bb-b0ad8e5f2626
Collins, Martin A.
81906d62-32cc-42eb-8278-bc5c471d63cd
Main, Charlotte E.
c6db45a3-fe7e-4651-94bb-b0ad8e5f2626
Collins, Martin A.
81906d62-32cc-42eb-8278-bc5c471d63cd

Main, Charlotte E. and Collins, Martin A. (2011) Diet of the Antarctic starry skate Amblyraja georgiana (Rajidae, Chondrichthyes) at South Georgia (Southern Ocean). Polar Biology, 34 (3), 389-396. (doi:10.1007/s00300-010-0894-9).

Record type: Article

Abstract

Stomach contents were identified from 206 Antarctic starry skate (Amblyraja georgiana) that were collected during three groundfish surveys (September 2007, April 2008 and January 2009) at South Georgia, Southern Ocean. The diet of A. georgiana varied with skate size and between years. Preferred prey included fish (particularly for larger individuals) and Antarctic krill, Euphausia superba, as well as amphipods, polychaetes and other benthic fauna. The skate A. georgiana appears to be an opportunistic predator, and the clear presence of Antarctic krill in this demersal predator’s diet may indicate a benthic habit of this euphausiid species, which has hitherto mainly been considered as occupying a purely pelagic niche.

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More information

Published date: 2011
Keywords: Feeding ecology, Rajidae, Elasmobranch, Chondrichthyes, Euphausia superba, Krill

Identifiers

Local EPrints ID: 179727
URI: http://eprints.soton.ac.uk/id/eprint/179727
ISSN: 0722-4060
PURE UUID: ba81c96d-66ab-49ed-8684-222e4374a707

Catalogue record

Date deposited: 04 Apr 2011 09:28
Last modified: 08 Nov 2021 19:03

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Contributors

Author: Charlotte E. Main
Author: Martin A. Collins

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