Feeding rates of Chaoborus americanus and Chaoborus trivittatus larvae generally increased with temperature, prey density, and larval size and varied with prey type. Temperature had no effect on feeding rates of old fourth instar C. trivittatus larvae. There was a significant though unexplained variability in the day‐to‐day feeding rates among individual chaoborids. Estimated mean percentage of standing crop of prey eaten by Chaoborus was: 2% for copepod nauplii, 3% for Diaptomus tyrelli, 9% for Diaptomus kenai, and 4% for Diaphanosoma. Chaoborus predation on Eunice Lake zooplankton appears to be reduced by seasonal and spatial segregation of predator and prey and by size incompatibility.
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Alice Y. Fedorenko (1975) studied this question.