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Acharya Narendra Deva University of Agriculture & Technology, Ayodhya

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Subject: Entomology × Author: Chaudhari, Akash Kumar × End date: 2022 × Start date: 2020 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Studies on comparative biology of rice moth, Corcyra cephalonica (Stainton) on different diets & their effects of eggs on parasitization by Trichogramma chilonis (Ishii)
    (ANDUAT, Kumarganj, Ayodhya, 2021-07-30) Chaudhari, Akash Kumar; Chandra, Umesh
    The rice moth, Corcyra cephalonica (Stainton) is one of the most important host insects used for mass production of many predators and parasitoid. The present investigation was conducted at the Biological Control Laboratory, Department of Entomology, Acharya Narendra Deva University of Agriculture & Technology, Kumarganj, Ayodhya, during the year 2020-21. To determining the efficient rearing media for rearing Corcyra cephalonica, nine treatments of different combination with grains and fortified with yeast, protinex and groundnut were used for rearing of C. cephalonica. Among different diets combination, the diet maize 95% + yeast 5% was obtained maximum fecundity (320 eggs), oviposition period (4.6 days) and minimum total developmental period of male and female (55.80 and 56.90 days). The minimum fecundity (190.60 eggs), oviposition period (3.1 days) and longest total developmental periods of male (64.20 days) and female (64.90 days) were found on treatment rice 100%. The different food material also affected the per cent parasitization on the eggs of C. cephalonica by eggs parasitoid Trichogramma chilonis. The maximum per cent parasitization done when host eggs reared on maize 95% + yeast 5% (78%) followed by rice 95% + groundnut 5% (74%). The minimum parasitism was obtained (51%) when reared on paddy 100%. The effect of different diets of trichocard on per cent fruit damage by Helicoverpa armigera on tomato crops. The minimum fruit infestation (1%) observed when diets maize 95% + yeast 5% was used three times release at 15 days interval 5 to 7 days after release. The obtained results provide on the different diets, maize 95% + yeast 5% diet was most suitable for mass rearing of C. cephalonica for the production of large scale and use of high nutrient media for maximum per cent parasitization by egg parasitoids which are also suitable for the control fruit borer in tomato crops.