Feeding selectivity in Notothenia neglecta , Nybelin, from Potter Cove, South Shetland Islands, Antarctica

A study of feeding selectivity in Notothenia neglecta Nybelin 1951, was carried out between October 1988 and January 1989 at Potter Cove, King George Island, where this is the dominant fish species. The abundance and biomass of benthic organisms from 0–40m were compared with their occurrence in the...

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Bibliographic Details
Published in:Antarctic Science
Main Authors: Barrera-Oro, E.R., Casaux, R.J.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1990
Subjects:
Geology
Ecology, Evolution, Behavior and Systematics
Oceanography
King George Island
South Shetland Islands
Potter Cove
Ivlev
Antarc*
Antarctic Science
Antarctica
antarcticus
Euphausia superba
Online Access:http://dx.doi.org/10.1017/s0954102090000281
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102090000281
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Summary:A study of feeding selectivity in Notothenia neglecta Nybelin 1951, was carried out between October 1988 and January 1989 at Potter Cove, King George Island, where this is the dominant fish species. The abundance and biomass of benthic organisms from 0–40m were compared with their occurrence in the diet of 142 fish. The Ivlev index indicated that the food items positively selected by the fish were sedentary polychaetes, the isopod Glyptonotus antarcticus , the gammarid amphipod Paradexamine sp., the bivalve Dacrydyum sp., the gastropods Margarella antarctica and Eatoniella sp., and algae. The biomass of the benthic community in the sampling area was low, presumably due to the effects of anchor ice. Despite being pelagic, krill ( Euphausia superba ) was by far the main food of N. neglecta which is considered a benthic feeder.

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