EFFECT OF NEEM (AZADIRACHTA-INDICA A JUSS) SEED KERNEL EXTRACTS ON THE LARVAL PARASITOID BRACON-BREVICORNIS WESM (HYM, BRACONIDAE)

Authors
SRIVASTAVA M PAUL AVN RENGASAMY S KUMAR J PARMAR BS
Citation
M. Srivastava et al., EFFECT OF NEEM (AZADIRACHTA-INDICA A JUSS) SEED KERNEL EXTRACTS ON THE LARVAL PARASITOID BRACON-BREVICORNIS WESM (HYM, BRACONIDAE), Journal of applied entomology, 121(1), 1997, pp. 51-57
Citations number
27
Categorie Soggetti
Entomology
Journal title
Journal of applied entomology → ACNP
ISSN journal
09312048
Volume
121
Issue
1
Year of publication
1997
Pages
51 - 57
Database
ISI
SICI code
0931-2048(1997)121:1<51:EON(AJ>2.0.ZU;2-3
Abstract
The alcoholic and hexane extracts of 17 neem ecotypes of India have be en found to be toxic to the egg, larval and pupal stages of the cosmop olitan, external gregarious larval parasitoid Bracon brevicornis (Wesm .). In general, the hexane extracts showed higher toxicity against the egg and pupal stages whereas the alcoholic extracts were more toxic a gainst the larvae. Azadirachtin content of the neem ecotypes revealed no apparent correlation with the observed toxicity against different s tages of the parasitoid.