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EFFECTS OF STARVATION AND AGE ON FORAGING EFFICIENCY AND SPEED OF CONSUMPTION BY LARVAE OF A FLOWER FLY, METASYRPHUS COROLLAE (SYRPHIDAE)

Published online by Cambridge University Press:  31 May 2012

V. Leir
Affiliation:
Department of Biology, Carleton University, Ottawa K1S 5B6
C.A. Barlow
Affiliation:
Department of Biology, Carleton University, Ottawa K1S 5B6

Abstract

Starved M. corollae Fab. larvae captured prey more quickly than unstarved larvae and older larvae, except those approaching pupation, sooner than younger larvae. Generally, older larvae also consumed prey more quickly but starvation increased prey handling time because starved larvae extracted 43% more, on average, from prey before discarding them. Significance of these findings for survival of M. corollae is discussed.

Résumé

Des larves à jeun de M. corollae Fab. ont capturé leurs proies plus rapidement que des larves non-affamées, et les larves âgées, à l'exception de celles approchant la pupaison, plus tôt que les jeunes larves. En général, les larves âgées ont consommé leurs proies plus rapidement, mais le jeûne a augmenté le temps de manipulation, parce que les larves à jeun ont extrait en moyenne 43% plus de matériel de leur proie avant de l'abandonner. La discussion traite de l'importance de ces observations pour la survie de M. corollae.

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1982

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EFFECTS OF STARVATION AND AGE ON FORAGING EFFICIENCY AND SPEED OF CONSUMPTION BY LARVAE OF A FLOWER FLY, METASYRPHUS COROLLAE (SYRPHIDAE)
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EFFECTS OF STARVATION AND AGE ON FORAGING EFFICIENCY AND SPEED OF CONSUMPTION BY LARVAE OF A FLOWER FLY, METASYRPHUS COROLLAE (SYRPHIDAE)
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EFFECTS OF STARVATION AND AGE ON FORAGING EFFICIENCY AND SPEED OF CONSUMPTION BY LARVAE OF A FLOWER FLY, METASYRPHUS COROLLAE (SYRPHIDAE)
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