Biology and morphometric of shoot and fruit borer (Leucinodes orbonalis Guenee) on brinjal crop under laboratory conditions
Keywords:Shoot and fruit borer, Incubation period, Larvae, Pupa, and Brinjal
The study on the biology of shoot and fruit borer was carried out in the Research Laboratory of the Department of Entomology, College of Agriculture, CAU, Imphal, India, Kharif season during 2021-22. White, creamy eggs with an oval to elongated shape were placed singly in bunches. On food made from brinjal, the incubation period for the brinjal shoot and fruit borer ranged from 3-7 days, with a mean time of 4.4±1.26 days. The average larval time varied from 13-20 days with a mean duration of 16.8±2.41 days in the brinjal food portion under laboratory conditions. The larvae were white to dark pinkish throughout the instars to become fully grown. It took an average of 9-15 days for a pinkish to dark brown pupa to develop, and between 6 and 8 days for the pupa to mature into an adult. The adult moths were little with whitish wings, and they lived an average of 5.4±1.50 days for female and 2.95±0.98 for male adults, ranging from 4.0 to 5.5 days during the experiment. As a result, the entire life cycle was completed in a brinjal diet ranging from 31 to 39 days, with a mean time of 34.9±2.19 days. During the trial, the male-to-female ratio ranged from 1 to 2, with an average ratio of 1:2 in a lab setting.
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