Effects of the host and parasitoid densities on the quality production of Trichogramma chilonis on lepidopterous (Sitotroga cereallela and Corcyra cephalonica) eggs

• Published in: Arthropods Vol. 1; no. 2; pp. 63 - 72
• Main Author: Farzana Perveen, Rizwana Sultan
• Format: Journal Article
• Language: English
• Published: Hong Kong Arthropods 01-06-2012; International Academy of Ecology and Environmental Sciences (IAEES); International Academy of Ecology and Environmental Sciences
• Subjects: adult longevity; Arthropoda; Corcyra cephalonica; developmental period; host age; parasitism; Sitotroga cerealella; Trichogramma chilonis
• ISSN: 2224-4255; 2224-4255

The present study was conducted for efficient and quality production of the stingless wasp, Trichogramma
chilonis Ishii with respect to rearing host and parasitoid densities of the angoumois grain moth, Sitotroga
cereallela (Olivier) and the rice meal moth, Corcyra cephalonica (Stainton) on its biology. For host density,
percentage parasitism and adult longevity was the highest at 20 eggs whereas emergence was the highest from
10 eggs of S. cereallela while of C. cephalonica percentage parasitism and emergence was the highest at 10
eggs. For parasitoid density, parasitism was the highest at 5 pairs of T. chilonis. Percentage of emergence and
longevity remained similar among all the 5 treatments. It is concluded that S. cereallela eggs more suitable as
compare to C. cephalonica eggs for mass and quality rearing of parasitoid, T. chilonis.