Summary
In laboratory experiments, I studied differential susceptibility of four co-occurring species of chironomids to a predatory damselfly. The chironomids differed in foraging behavior and could be ranked according to the amount of time they spent outside of their tubes. In choice experiments, the predator consistently selected the prey which spent more time out of the tube, and time out of tube was a significant predictor of the predation rate coefficient. Electivity indices, calculated from field samples and diet analyses of the predator, supported the laboratory results. The data suggest that exposure to predators in a heterogeneous prey community is largely determined by tubedwelling behavior.
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Hershey, A.E. Tubes and foraging behavior in larval Chironomidae: implications for predator avoidance. Oecologia 73, 236–241 (1987). https://doi.org/10.1007/BF00377513
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DOI: https://doi.org/10.1007/BF00377513