Influence of temperature variation on the pupal performance of multivoltine mulberry silkworm Bombyx mori Linn.

S.K. Gupta; K.P.Gaur

Volume : VIII, Issue : III, March - 2019

Influence of temperature variation on the pupal performance of multivoltine mulberry silkworm Bombyx mori Linn.

S. K. Gupta, K. P. Gaur

Abstract :

The variation in temperature significantly (P<0.01) influenced the pupae duration, pupae weight and survival of pupae of silkworm. With the increase in re� temperature from 14 to 34˚C, the pupae duration decreased from the maximum of 13.14 days at 14˚C to the minimum duration of 8.23 days at 34˚C, the pupae weight increased from 0.74gm at 14 ˚C to 0.92gm at 26˚C and the survival of pupae increased from 58.38% at 14˚C to the maximum level of 92.72% at 26˚C. Further increase in temperature above 26˚C caused notable decline in survival of pupae, pupae weight and pupae duration. At 10˚C and 38˚C, the larvae did not pupate. The success of the sericulture industry depends upon several variables, but environment conditions such as biotic and a–biotic factors are of particular importance to the study include future strategies to be taken for the management climatic temperature like 26�1˚C for successful cocoon crop and rearers.