Abstract
In laboratory feeding trials, we analyzed the feeding behavior and selectivity of the cichlid, Sarotherodon galilaeum, for zooplankton prey from Lake Kinneret, Israel. The feeding behavior was dependent on fish size. Fish less than 20 mm SL fed on zooplankton as obligate particulate feeders. Fish from 20 to 42 mm SL fed either as particulate feeders or as filter feeders. Fish larger than 62 mm SL fed as obligate filter feeders. Particulate-feeding fish were size selective and had highest feeding electivities for large-sized zooplankton species. Filter-feeding fish had highest feeding electivities for zooplankton species with poor escape ability. In general, S. galilaeum predation pressure would be greatest on Ceriodaphnia reticulata, a large-bodied and easily captured species which is selected by both particulate-feeding and filter-feeding fish.
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Drenner, R.W., Vinyard, G.L., Gophen, M. et al. Feeding behavior of the cichlid, Sarotherodon galilaeum: selective predation on Lake Kinneret zooplankton. Hydrobiologia 87, 17–20 (1982). https://doi.org/10.1007/BF00016658
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DOI: https://doi.org/10.1007/BF00016658