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Is the effect of priming plants, and a functional JAR1, negligible on the foraging behaviour and development of a generalist lepidopteran, Helicoverpa armigera?

Johnson, M. L., Schenk, P. M., Cribb, B. W., Moore, C., Perkins, L. E. and Zalucki, M. P. (2011) Is the effect of priming plants, and a functional JAR1, negligible on the foraging behaviour and development of a generalist lepidopteran, Helicoverpa armigera? Entomologia Experimentalis et Applicata, 141 (1). pp. 78-87. ISSN 1570-7458

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Article Link(s): http://doi.org/10.1111/j.1570-7458.2011.01170.x

Publisher URL: http://dx.doi.org/10.1111/j.1570-7458.2011.01170.x

Abstract

Theory and recent literature suggest strong effects of induced plant defences in some plant herbivore systems. Few have studied behavioural effects on intact plants. Differences in foraging behaviour as well as weight gain were determined for first instar Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) on Arabidopsis thaliana (L.) Heynh. (Brassicaceae) mutant and wild type plants, non-primed, or primed by herbivore feeding or methyl jasmonate. The differences in feeding were primarily in the length of feeding time as opposed to the area fed on, feeding location, or frequency. More larvae dispersed from plants after priming by mite feeding than dispersed after caterpillar feeding. Other behavioural activities such as resting were not significantly affected. Early instars gained less weight feeding on ein2 (ethylene insensitive) mutant, but there was no difference in weight gain between larvae feeding on induced and non-induced plants of the same type. We concluded that there are fitness consequences for neonates of the generalist H. armigera after feeding on induced plant tissues in some cases, and that distinct changes in behaviour are recognisable both at the fine scale and at grosser levels (dispersal). However, these changes are more subtle than might be expected.

Item Type:Article
Keywords:Arabidopsis thaliana Heliothinae insect behaviour MAM-L induction methyl jasmonate Lepidoptera Noctuidae Brassicaceae spider mite Tetranychus urticae
Subjects:Plant pests and diseases > Economic entomology
Deposited On:28 Mar 2019 01:28
Last Modified:28 Mar 2019 01:28

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