Alternate Host of Diadegma insulare (Hymenoptera: Ichneumonidae), a Parasitoid of Diamondback Moth (Lepidoptera: Plutellidae): A Preliminary Search
Title:
Alternate Host of Diadegma insulare (Hymenoptera: Ichneumonidae), a Parasitoid of Diamondback Moth (Lepidoptera: Plutellidae): A Preliminary Search
Author:
A. B. Idris E.J. Grafius
Appeared in:
Pakistan journal of biological sciences
Paging:
Volume 4 (2001) nr. 10 pages 1235-1239
Year:
2001
Contents:
Potential alternate host larvae and pupae were collected from wild and cultivated Brassica plants, apple (Malus domestica) trees, ornamental honeylocust tree (Gleditsia triacanthos), and corn (Zea mays) plants for laboratory observations. Laboratory reared Phthorimaea operculella and Sitotroga cerealella were used for parasitism by D. insulare. There was no parasitism observed to all Lepidoptera except for Plutella xylostella L., suggesting that they are unlikely to be the hosts of D. insulare. D. insulare were observed to parasitize Plutella porrectella, but neither host pupae nor parasitoid pupae were formed. Interestingly, Phthorimaea operculella and Sitotroga cerealella, both gelechiids, were parasitized by D. insulare (new record). In contrast to the parasitized P. xylostella, the larval developmental time of gelechiids to pupation was prolonged. It is suggested that the search for alternate host of D. insulare should be continued and focused on the microlepidopterous larvae.
Publisher:
Asian Network for Scientific Information (provided by DOAJ)
Journal description