Impact of Diets on the Biology of Corcyra cephalonica (Stainton)
DOI:
https://doi.org/10.55446/IJE.2023.1129Keywords:
Corcyra cephalonica developmental period, fecundity, growth index, longevity, mass rearing, sex ratio, incubation, larvae, pupal periods, emergence, lifespan, sorghum, bajra groundnut, wheat, maizeAbstract
The influence of various diets was evaluated on the biology of Corcyra cephalonica (Stainton) under laboratory conditions. Results revealed that the lowest egg hatching (60.33%) was found on wheat diet 100% and highest (87.50 %) was on bajra (32.33%) + maize (32.33%) + wheat (32.33%) + sugar (3%) diet.The shortest and longest incubation period (3.83 and 6.67 days), larval period (31.83 and 40.67 days) and total developmental period (50.50 and 65.00 days) were recorded on bajra (100%) and wheat (100%) diet, respectively. Meanwhile shortest and longest pupal period (14.83 and 19.33 days) were recorded on bajra (100%) and maize (100%) diet, respectively. The maximum and minimum adult emergence (88.33 and 53.75 %), sex ratio (1.72:1 and 0.42:1), adult male lifespan (12.50 and 7.17 days), fecundity (239.16 and 180.67 eggs/ female) and growth index (2.66 and 1.39) were recorded on maize (48.5%) + sorghum (48.5%) + Groundnut (3%) diet and Wheat (100%) diet, respectively. Life span of adult female was longest (8.67 days) and shortest (4.67 days) on diet maize (48.5%) + sorghum (48.5%) + groundnut (3%) and bajra (100%) diet, respectively. It may be concluded that among the seven diets, the most preferred diet for rearing of C. cephalonica was maize (48.5%) + sorghum (48.5%) + groundnut (3%) and the least preferred diet was wheat (100%).
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