Irigoien, X. X. Plymouth Marine Laboratory, xi@wpo.nerc.ac.uk
Meyer-Harms, B. B. Institut fuer Ostseeforschung, bettina.meyer-harms@io-warnemuende.de
Harris, R. R. Plymouth Marine Laboratory, RPH@pml.ac.uk
Head, R. R. Plymouth Marine Laboratory, RNH@pml.ac.uk

 
SEASONAL VARIATIONS IN THE SELECTIVE FEEDING BEHAVIOUR OF CALANUS HELGOLANDICUS.
 
Copepods have shown the ability to discriminate between different food sources. However, the extent of selective feeding behaviour and the mechanisms controlling it in the field are still poorly understood. In this study egg production and selective feeding behaviour of Calanus helgolandicus on phytoplankton (using HPLC techniques) at a coastal station off Plymouth have been investigated over a wide range of conditions in weekly experiments from July 1996 to June 1997. The phytoplankton succession included peaks of prymnesiophytes, diatoms and dinoflegellates. Calanus helgolandicus showed selective feeding behaviour with preference for diatoms and dinoflagellates (except for a bloom of Gyrodinium aureolum). The influence of factors such as food composition and food concentration on the selective feeding behaviour and egg production are tested and discussed.
 
Day: Wednesday, Feb. 3
Time: 11:30 - 11:45am
Location: Hilton of Santa Fe
 
Code: SS21WE1145H