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Source
Indian Forester, Vol 138, No 3 (2012), Pagination: 235-237
Abstract
To achieve higher rate of parasitisation by egg parasitoids, Trichogramma spp., study was conducted to ensure 100 % mortality of the developing embryo inside the Corcyra cephalonica eggs and arresting the emergence of larvae by applying suitable chilling period to the host eggs. Three hours chilling of Corcyra cephalonica eggs at -8°C and RH 50 ± 10% in refrigerator was found suitable for checking the embryonic development of Corcyra cephalonica eggs and also for maintaining the viability of eggs for parasitisation by Trichogramma spp. Parasitisation in three hours chilled eggs was recorded as high as 94.2% by T. brasiliensis, 93.4% by T.raoi and 92.6% by T.chilonis without hatching of any un-parasitised host egg.
Keywords
Chilling of Eggs, Trichogramma Spp., Embryo, Corcyra cephalonica Viability, Parasitisation