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

F. J. Wrona, P. Calow

Research output: Contribution to journalArticle

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.tm -1) should remain constant with feeding time (tm) on each prey item but for A. heteroclita it continually reduced with tm, 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 languageEnglish (US)
Pages (from-to)171-175
Number of pages5
JournalFunctional Ecology
Volume2
Issue number2
DOIs
StatePublished - Jan 1 1988
Externally publishedYes

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