Predaceous diaptomids and cyclopoids will eat the same prey species at rates which are influenced more by hunger than by abundance of prey. thomasi can eat six or more prey animals daily, depending on the size of the prey. Cannibalism probably causes the uniformity in body size and instar of predaceous diaptomids in some populations, C. Predation rates are inversely proportional to prey size. nevadensis eat up to 12 or more cyclopoids or diaptomids per day. gigas probably combines raptorial with filter feeding and can eat 150 or more smaller crustaceans per day. vernalis, and Branckinecta gigas show that these predatory species can capture and eat many prey species of various sizes. nevadensis, Cyclops bicuspidatus thomasi, C. Experimental studies on Diaptoimus shoshone, D.
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