Case selection by a limnephilid caddisfly [Potamophylax latipennis (Curtis)] in response to different predators

Boyero, Luz, Rincón, Pedro A., and Bosch, Jaime (2006) Case selection by a limnephilid caddisfly [Potamophylax latipennis (Curtis)] in response to different predators. Behavioral Ecology and Sociobiology, 59 (3). pp. 364-372.

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Abstract

Some organisms use morphological structures obtained by behavioural processes to lower mortality by predation. We test whether larvae of the limnephilid caddisfly Potamophylax latipennis (Curtis) vary their responses to the presence of different predators (dragonfly naiads, fire salamander larvae or brown trout) by choosing organic or mineral cases. We offered both case types to larvae, and simulated differences in predation risk using water conditioned with chemicals from the different predators. Our results show that Potamophylax larvae detect and discriminate predators using water-borne chemical cues and alter their choice of case type according to the perceived predation risk. Moreover, the distribution of larvae bearing cases of different anti-predator value matches the spatial variation in predation risk in the field.

Item ID: 4176
Item Type: Article (Research - C1)
ISSN: 1432-0762
Keywords: behaviour; predation risk; inducible defences; Trichoptera
Date Deposited: 24 Sep 2009 07:28
FoR Codes: 05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050202 Conservation and Biodiversity @ 100%
SEO Codes: 96 ENVIRONMENT > 9605 Ecosystem Assessment and Management > 960508 Ecosystem Assessment and Management of Mining Environments @ 100%
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