Developmental Disturbances in Different Insect Orders Caused by an Edy steroid Agonise, RH 5849
Authors: DORCAS, BELA; POLAR, LAszL; TAG EL-DIN, MAHMOUD H.; EROSS, KATALIN; WING, KEITH D.
Source: Journal of Economic Entomology, Volume 85, Number 6, December 1992 , pp. 2107-2112(6)
Publisher: Entomological Society of America
Abstract:Experiments with an ecdysteroid agonist, RH 5849 (1,2-dibenzoyl-I-tertbutylhydrazine), indicated high effectiveness on Leptinotarsa decemUneata (Say) (Coleoptera: Chrysomelidae), Mamestra brassicae L. (Lepidoptera: Noctuidae), Pieris brassicae Hubner (Lepidoptera: Pieridae), and Oncopeltus fasciatus (Dallas) (Heteroptera: Lygaeidae); moderate effectiveness on Phaedon cochleariae (F.) (Coleoptera: Chrysomelidae), Plutella xylostella (L.) (Lepidoptera: Plutellidae), and Neobellieria bullata Parker (Diptera: Sarcophagidae); and low effectiveness on Acyrthosiphon pisum (Harris) (Homoptera: Aphididae). Postembryonic development of P. xylostella and N. bullata was delayed; we observed molting disturbances including premature head capsule apolysis in L. decemlineata, M. brassicae, and P. brassicae, an early first molt in N. bullata, and nymphal-adult intermediates in O.fasciatus. Malformated structures included crochets on M. brassicae and Pieris brassicae, wings on O. fasciatus, and mandibles on N. bullata. Body weight of P. brassicae and N. bullata was decreased and O.fasciatus was sterilized. The toxicity on RH 5849 seemed to be strongly species- and stage-dependent. In diet 1,000 ppm RH 5849 had no Significant activity on last-instar Periplaneta Americana (L.) (Dictyoptera: Blattidae). Fifty ppm of RH 5849 in diet showed no activity during the postembryonic development of Blatella germanica (L.) (Dictyoptera: Blattidae). A concentration of 0.1% RH 5849 on leaves was not effective during the larval stage of A. pisum.
Document Type: Research Article
Publication date: December 1, 1992
- Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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