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On the Nutrition and Metabolism of Zooplankton X. Quantitative Aspects of Calanus Helgolandicus Feeding as a Carnivore

Published online by Cambridge University Press:  11 May 2009

E. D. S. Corner
Affiliation:
The Laboratory, Marine Biological Association, Citadel Hill, Plymouth
R. N. Head
Affiliation:
The Laboratory, Marine Biological Association, Citadel Hill, Plymouth
C. C. Kilvington Lindapennycuick
Affiliation:
The Laboratory, Marine Biological Association, Citadel Hill, Plymouth

Extract

INTRODUCTION

In an earlier study (Corner et al. 1974) the copepod Calanus helgolandicus (Claus) was found to feed actively on nauplii of the barnacle Elminius modestus Darwin, one adult female ingesting a maximum daily ration equivalent to 25% of the body nitrogen. The present work, in which Elminius nauplii have again been used as a diet, extends the earlier study by determining how efficiently Calanus digests an animal food. In addition, the methods used have provided information on other aspects of carnivorous feeding by Calanus, including the relationship between food concentration and size of ration ingested as well as gross growth efficiency, i.e. the proportion of ingested food invested in growth.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 1976

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