Journal of Environment and Sociobiology

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Impact of Coupling Duration on Fecundity and Fertility of some Important Cross Breeds of Bombyx mori L in West Bengal


Affiliations
1 Department of Agriculture and Rural Development, Chandraketugarh Sahidullah Smriti Mahavidyalaya, Berachampa, North 24 Parganas, West Bengal, India
2 P. G. Department of Sericulture, Krisnath College, Berhampore, Murshidabad, West Bengal, India
3 Department of Zoology, Sidho Kanho Birsha University, Purulia, West Bengal, India
     

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Silkworm eggs play crucial role in sericulture industry. For successful production of cocoon crops adequate quantity of good quality egg is essential. In case of silk moth mating time varies from 1 - 4 h which is generally termed as coupling period. The temporal aspects of mating in terms of duration may also have impact on the number of egg laid, pattern of egg laying and their viability. The present investigation intends to find out whether duration of coupling period has any relation with fecundity and fertility of silk moth. The study was conducted with the cross breed of following Bombyx mori breeds: NxM12(w), NxNB4D2, and NxYB. The experiment reveals that total fecundity almost remained same with the variation of coupling duration but fertility is directly proportional to coupling duration and maximum (100%) at 5 h coupling duration.

Keywords

Fertility, Fecundity, Coupling, Egg.
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  • Impact of Coupling Duration on Fecundity and Fertility of some Important Cross Breeds of Bombyx mori L in West Bengal

Abstract Views: 291  |  PDF Views: 1

Authors

Himanish Bhattacharyya
Department of Agriculture and Rural Development, Chandraketugarh Sahidullah Smriti Mahavidyalaya, Berachampa, North 24 Parganas, West Bengal, India
Kunal Sarkar
P. G. Department of Sericulture, Krisnath College, Berhampore, Murshidabad, West Bengal, India
Biplab Kumar Modak
Department of Zoology, Sidho Kanho Birsha University, Purulia, West Bengal, India

Abstract


Silkworm eggs play crucial role in sericulture industry. For successful production of cocoon crops adequate quantity of good quality egg is essential. In case of silk moth mating time varies from 1 - 4 h which is generally termed as coupling period. The temporal aspects of mating in terms of duration may also have impact on the number of egg laid, pattern of egg laying and their viability. The present investigation intends to find out whether duration of coupling period has any relation with fecundity and fertility of silk moth. The study was conducted with the cross breed of following Bombyx mori breeds: NxM12(w), NxNB4D2, and NxYB. The experiment reveals that total fecundity almost remained same with the variation of coupling duration but fertility is directly proportional to coupling duration and maximum (100%) at 5 h coupling duration.

Keywords


Fertility, Fecundity, Coupling, Egg.

References