Optimal feeding in a freshwater sit-and-wait predator, Alboglossiphonia heteroclita (L.) (Hirudinoidea: Glossiphoniidae)

F. J. Wrona; P. Calow

doi:10.2307/2389692

Optimal feeding in a freshwater sit-and-wait predator, Alboglossiphonia heteroclita (L.) (Hirudinoidea: Glossiphoniidae)

F. J. Wrona, P. Calow

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7 Scopus citations

Abstract

Alboglossiphonia heteroclita, a relatively immobile suctorial carnivore of freshwater macroinvertebrate prey, possesses a large, diverticulated gut. The energy maximization principle predicts that cumulative ingestion rate (m.t_m ^-1) should remain constant with feeding time (t_m) on each prey item but for A. heteroclita it continually reduced with t_m, attributed to both a food and feeder constraint. Rate of gut emptying decreased exponentially with intercatch interval. Results suggest that this species filled its gut at each meal. -from Authors

Original language	English (US)
Pages (from-to)	171-175
Number of pages	5
Journal	Functional Ecology
Volume	2
Issue number	2
DOIs	https://doi.org/10.2307/2389692
State	Published - Jan 1 1988
Externally published	Yes

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Optimal feeding in a freshwater sit-and-wait predator, Alboglossiphonia heteroclita (L.) (Hirudinoidea: Glossiphoniidae)

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