Studies on changes in host suitability of Lymantria dispar (Lepidoptera, Lymantriidae) for the endoparasitic development of Glyptapanteles liparidis (Hymenoptera, Braconidae) by a microsporidian infection.
Abstract
Investigations on the host-parasitoid-pathogen system Lymantria dispar, Glyptapanteles liparidis, Vairimorpha sp. in a previous research project revealed that the microsporidian infection of the host larva had a negative impact on the development of the endoparasitic wasp without causing infection of the parasitoids themselves. It is the aim of the proposed research to study the causes of this reduced performance of the parasitoid. Therefore, gypsy moth larvae will be inoculated with the microsporidium before or after parasitization. Hemolymph and total insect body samples will be taken at certain intervals and analyzed for changes in the host nutrient content of carbohydrates, amino acids, and lipids, which might consequently lead to malnutrition of G. liparidis larvae. Moreover, the study could yield new insight on the effects of a microsporidian infection on the host's physiology, a topic that is only poorly understood, as well as on the impact of parasitism by G. liparidis on the host¿s amino acids and lipids content which also has not been investigated yet.
host-parasitoid-pathogen interaction Lymantria dispar host suitability Braconidae Microsporidia
Publikationen
Alterations in carbohydrate and fatty acid levels of Lymantria dispar larvae caused by a microsporidian infection and potential adverse effects on a co-occurring endoparasitoid, Glyptapanteles liparidis.
Autoren: Hoch, G; Schafellner, C; Henn, MW; Schopf, A Jahr: 2002
Journal articles
Interspecific competition between the braconid endoparasitoids Glyptapanteles porthetriae and Glyptapanteles liparidis in Lymantria dispar larvae
Autoren: Marktl, R.C., Stauffer, C., Schopf, A. Jahr: 2002
Journal articles
Microsporidian pathogens of forest Lepidoptera: Ecological and physiological interactions between host and pathogen
Autoren: Hoch, G. Jahr: 2009
Conference & Workshop proceedings, paper, abstract
Project staff
Axel Schopf
Univ.-Prof. i.R. Dr.phil. Axel Schopf
axel.schopf@boku.ac.at
Project Leader
01.04.1999 - 01.04.2001
BOKU partners
External partners
Illinois Natural History Survey
none
partner