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THE RELATION BETWEEN CONCENTRATION OF FOOD AND FEEDING RATE OF DAPHNIA MAGNA STRAUS
Abstract
Saccharomyces cerevisiae labelled with P 32 was fed to Daphnia magna and Feeding rate of Daphnia was calculated from uptake of P 32. Errors inherent in the method were measured and discussed. An unexpected source of error was due to a rapid uptake of P 32 during the first few minutes in high concentrations of yeast. An hypothesis is presented to explain this phenomenon.In concentrations of yeast below 10 5 cells/ml, feeding rate of Daphnia magna is proportional to concentration of food. As concentration of yeast is increased above 10 5 cells/ml the feeding rate increases very slightly or not at all. These results are discussed in relation to the supposed inhibition of feeding by high concentrations of log-phase Chlorella suggested by Ryther, and Cushing's 'encounter theory' of grazing.
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Citations
Cited by
Holling, C. S. (1965) · Memoirs of the Entomological Society of Canada · doi:10.4039/entm9745fv · Cited by 2,701
PREDATOR FUNCTIONAL RESPONSES: DISCRIMINATING BETWEEN HANDLING AND DIGESTING PREY
Jeschke, J. M., Kopp, M., & Tollrian, R. (2002) · Ecological Monographs · doi:10.1890/0012-9615(2002)072[0095:pfrdbh]2.0.co;2 · Cited by 718
The filtration apparatus of Cladocera: Filter mesh-sizes and their implications on food selectivity
Geller, W., & M�ller, H. (1981) · Oecologia · doi:10.1007/bf00347591 · Cited by 560
Feeding type and development drive the ingestion of microplastics by freshwater invertebrates
Scherer, C., Brennholt, N., Reifferscheid, G., & Wagner, M. (2017) · Scientific Reports · doi:10.1038/s41598-017-17191-7 · Cited by 448
Consumer‐food systems: why type I functional responses are exclusive to filter feeders
Jeschke, J. M., Kopp, M., & Tollrian, R. (2004) · Biological Reviews · doi:10.1017/s1464793103006286 · Cited by 437
Metadata
- Authors
- Rigler, F. H.
- Venue
- Canadian Journal of Zoology
- Publisher
- Canadian Science Publishing
- Published
- 1961-12-01
- Volume
- 39
- Issue
- 6
- Pages
- 857-868
- ISSN
- 0008-4301 (ISSN-L)
- 1480-3283
- OpenAlex
- W2089966504
- Cited by
- 162
- References
- 0
- FWCI
- 2.95
- Type
- journal article
- Language
- en
- Open access
- closed
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- Rigler, F. H. (1961). THE RELATION BETWEEN CONCENTRATION OF FOOD AND FEEDING RATE OF DAPHNIA MAGNA STRAUS. Canadian Journal of Zoology. https://doi.org/10.1139/z61-080
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