|Voedselopname van de mariene pelagische copepood Temora longicornis (Müller)|
Van Oostrum, R.W. (1980). Voedselopname van de mariene pelagische copepood Temora longicornis (Müller). Interne verslagen Nederlands Instituut voor Onderzoek der Zee, 1980(5). NIOZ: Texel. 65 pp.
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THe plantonic calanoid copepod,Temora longicornis was bred during 14 generations at 15°C on a diet of algae (Rhodomonas sp.. and Isochrysis galbana and a heterotrophic dinoflagellate (Oxyrrhis marina. In addition to the cultivation of copepods continuous cultures of both the algae and the dinoflagellate were set up. The predation of Oxyrrhis on Rhodomonas was studied during 120 hours in dark. It was tried to get insight in the grazing of Temora on the food occurring in the culture tanks, especially Oxyrrhis. Except for naupliar stage I the food consumption was measured for all developmental stages at a concentration of 3500 Oxyrrhis cells ml-1. It was observed that the logarithm of feeding-and filtering rate increased linearly with stage. Within the adult stage the food intake appeared to be independent of the weight of the copepods, both in males and in females. The results of the grazing experiments have been extrapolated to the situation in the culture tanks and in the North Sea.