Vol. 11, Special Issue 9 (2022)

Author(s):
Shani Kumar, Hem Singh and Pradeep Kumar Verma

Abstract:
The study on the life and fertility table for the female of Bombyx mori Linn. reared on mulberry plant variety S-1 leaves at two different temperatures viz,. control temperature (25±1 °C) and room temperature in the lab of Sericulture Research, Demonstration and Training Unit, Department of Entomology, College of Agriculture, Sardar Vallabhbhai Patel University of Agriculture & Technology, Meerut-250110 (U. P.), India. The data obtained from the data obtained from life and fertility table for female exhibited highest potential fecundity was 331 eggs per female at control temperature (25±1 °C) and 290 eggs per female at room temperature. The value of net reproductive rate (R₀), intrinsic rate of increase (r), finite rate of increase (λ) were 114.33, 0.07, 1.174 at control temperature (25±1 °C), respectively much better than the values obtained from room temperature. The mean length of generation (T) and annual rate of increase were 27.66 days, 3.12437874 x 10²⁸ at control temperature (25±1 °C), respectively, also superior to the values obtained from room temperature.