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JOURNAL OF PLANKTON RESEARCH | VOLUME 7 | NUMBER 6 | PAGES 821-830 | 1985
© Oxford University Press

research-article

Effect of temperature on growth and ingestion rates of Favella sp

C. M. Aelion1 and S. W. Chisholm

Ralph M. Parsons Laboratory, 48-425 Massachusetts Institute of Technology Cambridge, MA 02139, USA 1Department of Environmental Sciences and Engineering, The University of North Carolina at Chapel Hill Chapel Hill, NC 27514, USA

Received on September 1, 1984; accepted on August 1, 1985 This study describes the effect of temperature on the growth and ingestion rates of the tintinnid, Favella sp. cultured with the dinoflagellate Heterocapsa triquetra. In vivo fluorescence was used to monitor the change in density of the H. triquetra population over 4- to 5-day periods in control tubes containing only algae, and in experimental tubes containing algae and tintinnids. A ‘switchover point’ occurred in the temperature dependency of the growth rate such that below 11.4°C, H. triquetra grew more quickly than Favella sp. and above this temperature the situation was reversed. Ingestion rates of Favella on H. triquetra were found to be temperature dependent in a nonlinear fashion. The rate doubled (from 2.5 to 5.3 cells animal–1 h–1) between 11.4 and 16.4°C whereas there was no change in ingestion rates between 8.0 and 11.4°C, or between 16.4 and 21.1°C.


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