Romeis, J. (1997) Impact of Plant Characters and Cropping Systems on the Searching Behavior and Parasitization Efficiency of Trichogramma spp. Egg Parasitoids of Helicoverpa armigera. PhD thesis, University of Hohenheim.
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Abstract
The behavior of insect parasitoids is not only affected by the host and by host-produced cues such as feces or sex pheromones but also by the first trophic level, the hosts' food Plants (Vinson, 1976; Price et al., 1980). A good understanding of these tri-trophic level interactions is necessary to optimize the use of natural occurring or augmented parasitoids and predators of pests insects. The following study was conducted with Trichogramma spp. (Hymenoptera: Trichograrnmatidae) egg parasitoids of Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae) on two host plants, pigeonpea (Cajanus cajan (L.) Millspaugh) and chickpea (Cicer arietinum L.).
| Item Type: | Thesis (PhD) |
|---|---|
| Author Affiliation: | University of Hohenheim, Germany |
| Subjects: | Plant Production Plant Protection |
| Divisions: | General |
| Depositing User: | Mr Balakrishna Garadasu |
| Date Deposited: | 18 Jul 2013 09:16 |
| Last Modified: | 18 Jul 2013 09:16 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/11133 |
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