Lepidostomatid caddisfly larvae are typical detritivores, but they occasionally eat small dead animals. A laboratory feeding experiment was conducted with Lepidostoma complicatum (Kobayashi) larvae using two different feeding treatments: leaves or leaves and dead chironomids. L. complicatum larvae showed significantly higher growth rates and adult emergence weight and a significantly earlier emergence for the leaves and dead chironomids treatment than for the leaves alone treatment. However, the adult emergence rate was not different between the two feeding treatments. Thus, it is apparent that ingestion of dead chironomids by detritivorous L. complicatum larvae positively influences larval growth rates, adult emergence weight, and larval development time.
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