Feeding in epiphytic, carnivorous insects: resource partitioning and the avoidance of intraguild predation

摘要: The gut contents of larval Enallagma cyathigerum (Zygoptera: Odonata), Cyrnus flavidus (Polycentropodidae: Trichoptera) and Ablabesmyia monilis (Tanypodinae: Chironomidae) feeding in nature experimental aquaria, were analysed. diet C. overlapped greater with the A. than E. cyathigerum. Feeding intensity composition different aquaria without Weights their food mean weights prey lower presence latter when compared control, while number items was not. proportions active diets higher but numbers such only. These differences are probably caused by reduced predator mobility during feeding, not a behavioural response from prey. Induced changes activity considered an effect defence mechanism reducing risk intraguild predation.