Predator presence moves Helicoverpa armigera larvae to distraction

Johnson, M. L., Armitage, S., Scholz, B. C. G., Merritt, D. J., Cribb, B. W. and Zalucki, M. P. (2007) Predator presence moves Helicoverpa armigera larvae to distraction. Journal of Insect Behavior, 20 1: 1-18. doi:10.1007/s10905-006-9048-x

Author Johnson, M. L.
Armitage, S.
Scholz, B. C. G.
Merritt, D. J.
Cribb, B. W.
Zalucki, M. P.
Title Predator presence moves Helicoverpa armigera larvae to distraction
Formatted title
Predator presence moves Helicoverpa armigera larvae to distraction
Journal name Journal of Insect Behavior   Check publisher's open access policy
ISSN 0892-7553
Publication date 2007-01-01
Year available 2006
Sub-type Article (original research)
DOI 10.1007/s10905-006-9048-x
Open Access Status
Volume 20
Issue 1
Start page 1
End page 18
Total pages 18
Editor Payne, T. L.
Paine, T. D.
Place of publication New York
Publisher Springer/Plenum Publishers
Language eng
Subject C1
270707 Sociobiology and Behavioural Ecology
620501 Field crops
Abstract Displacement of herbivorous insects by the presence of predators on whole plants has rarely been studied. By semi-continuous observations of an externally feeding insect herbivore and a predator, we show how the mere presence of the predator, Geocoris lubra Kirkaldy (Hemiptera: Geocoridae), on a plant can have a strong influence on the movement and behaviors of Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae) larvae. The presence of predators, as opposed to mortality by predators, influenced the proportion of larvae feeding, resting and implementing avoidance activities. In addition, the proportion of time individual larvae allocated to feeding, resting and dropping off plants was affected when predators were present with and without contact between the two. Predators do more than just reduce numbers of herbivores; they influence feeding, displacement and subsequently the distribution of plant damage.
Keyword Entomology
Helicoverpa armigera
foraging behavior
Geocoris lubra
big-eyed bug
Foraging Behavior
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

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Created: Tue, 19 Feb 2008, 02:09:39 EST