Department of Entomology, Odisha University of Agriculture and Technology, Bhubaneswar, 751003, Odisha, India
*Email: suchi.balabantaray26@gmail.com (corresponding author)
Online Published on 6 February, 2023.
The fitness parameters of Trichogramma chilonis (Ishii) such as adult emergence (%) from pupae and parasitisation of host Corcyra cephalonica Stainton were evaluated under laboratory conditions after storing the pupae at five constant temperatures (5, 7.5, 10, 12.5 and 15°C ) for nine storage durations (5, 10, 15, 20, 25, 30, 35, 40 and 45 days) in incubators. Maximum adult emergence of 94.27% was observed at 7.5°C for 5 days. The emergence got gradually reduced to 77.03% at 30 days after storage and further reduced to 54.48% at 45 days. The maximum parasitization of 93.52% was observed at 7.5°C for 5 days which gradually decreased with increase in storage duration. The parasitization was 73.76% at 30 days after storage and 56.74% at 45 days after storage. The next best temperature was 10°C followed by 5°C. The temperatures viz., 12.5 and 15°C were found unsuitable for the storage of T. chilonis pupae.
Effect, Storage, Pupae, Trichogramma chilonis, Pupae, Corcyra cephalonica, Temperature, Parasitization efficiency, Adult emergence, Fitness costs
