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An annual profile of growth in the otoliths of immature Notothenia coriiceps Richardson in relation to the environment at Signy Island, Antarctica

Published online by Cambridge University Press:  12 May 2004

Julian R. Ashford  and
Martin G. White
Julian R. Ashford
Affiliation:
British Antarctic Survey, NERC, High Cross, Madingley Road, Cambridge CB3 0ET, UK
Martin G. White
Affiliation:
British Antarctic Survey, NERC, High Cross, Madingley Road, Cambridge CB3 0ET, UK
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Abstract

Scanning electron microscope and image analysis techniques were used to construct a profile of otolith growth from June 1987–June 1988 in immature Notothenia coriiceps. Growth was found to fluctuate seasonally with a large decrease between August and late November 1987. Examination of stomach fullness showed that fish continued to feed during winter. Increases in absolute light levels and sea temperature during spring were found to coincide approximately with increasing growth. Conclusive evidence distinguishing between hypotheses for limitation of growth either by seawater temperature or by resource availability was not found.

Keywords

Antarcticfishotolith growthNotothenia coriicepstemperaturediet
Type
Papers—Life Sciences and Oceanography
Information
Antarctic Science , Volume 7 , Issue 4 , December 1995 , pp. 345 - 349
Copyright
© Antarctic Science Ltd 1995

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