Cyclops scutifer

Figure 5. 815N values of Daphnia longiremis, Diaptomus pribilofensis, and Cyclops scutifer during the course of the 1988 experiment. Initial sampling on July 1 occurred just before the 15N additions began. 

Measurement of susceptibility is further complicated by the fact that species of copepods which may readily be infected experimentally in the laboratory may only serve as poor hosts under natural conditions. For example, in the laboratory, Cyclops scutifer was found to be readily invaded by the coracidia of Triaenophorus nodulosus and yet in Lake Lergi, this species of copepod showed a prevalence of only 0.28% (849). This result may be due to the behaviour and/or the physiology of the coracidia or the host or both, being different under different environmental conditions. 

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