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PREY CONSUMPTION BEHAVIOR OF AMBLYSEIUS LARGOENSIS IN RELATION TO HUNGER1

Published online by Cambridge University Press:  31 May 2012

J. N. Sandness  and
J. A. McMurtry
J. N. Sandness
Affiliation:
Division of Biological Control, University of California Citrus Research Center and Agricultural Experiment Station, Riverside
J. A. McMurtry
Affiliation:
Division of Biological Control, University of California Citrus Research Center and Agricultural Experiment Station, Riverside
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Abstract

A series of constant observations on Amblyseius largoensis (Muma) on excised avocado leaves in the laboratory revealed that the hunger level of this predator directly affected the time spent feeding on individual prey, the relative aggressiveness, the frequency of successful captures, the length of digestive pause, and the speed of movement. Feeding and nonfeeding periods occurred in constantly recurring cycles. Hungry predators captured 2–4 prey in succession; after each capture a digestive pause followed, the length of which increased (up to 7–8 h) as the predator became increasingly satiated. This cycle was repeated 2–3 times in 24 h. Several thresholds appeared to be responsible for this behavior pattern.

Type
Articles
Information
The Canadian Entomologist , Volume 104 , Issue 4 , April 1972 , pp. 461 - 470
Copyright
Copyright © Entomological Society of Canada 1972

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