Journal of Applied Entomology - Zeitschrift für angewandte Entomologie (2002) 126, 1-7

C. Nussbaumer, A. Stradner and A. Schopf (2002)
Effects of parasitization or injection of parasitoid-derived factors from the endoparasitic wasp Glyptapanteles porthetriae (Hym., Braconidae) on the development of the larval host, Lymantria dispar (Lep., Lymantriidae)
Journal of Applied Entomology - Zeitschrift für angewandte Entomologie 126 (1), 1-7
Abstract: Second instar larvae of Lymantria dispar were parasitized or injected with parasitoid-derived factors such as venom, calyx fluid or parasitoid eggs from Glyptapanteles porthetriae. Growth and development of the host larvae were affected in all different groups compared to control larvae of the same age, injected with Ringer solution. The greatest impact on host growth and on the duration of the 3rd instar was caused by injecting parasitoid eggs. Treated larvae showed melanized capsules or nodules in the hemocoel. While the wasp age had no effect on parasitization efficiency or on the percentage of melanized particles in the hemocoel, significantly more encapsulations were found in larvae parasitized by old wasps as opposed to young wasps. Superparasitization (double or quadruple oviposition) increased the parasitization efficiency markedly. While none of the control larvae showed melanized particles, in the groups of single and superparasitized (2x and 4x) hosts a high percentage of melanized particles (capsules and nodules) occurred.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Axel Schopf

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Lymantria dispar
Glyptapanteles porthetriae (parasitoid)	Lymantria dispar