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KMID : 1041219980400010027
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Journal of Sericultural and Entomological Science
1998 Volume.40 No. 1 p.27 ~ p.32
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Biochemical Attributes of Mature Female Gonads of Different Strains and Hybrid of Mulberry Silkmoth, Bombyx mori L.(Lepidoptera : Bombycidae)
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Saha, A. K.
Chaudhuri, A./Krishnan, N./Sengupta, A. K./Shamsuddin, M./Sen, S. K./Saratchandra, B.
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Abstract
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One indigenous polyvoltine strain (Nistari) and two bivoltine strains viz. P5, and NB18, along with one bivoltine hybrid (P5 X NB18) were subjected for studies on the differences on some physiologically important biomolecules like protein, nucleic acids and cholesterol. Ovarian protein and RNA content remained significantly high in the bivoltine races and their hybrid over multivoltine breed, while, DNA and cholesterol content remained significantly low in all the breeds and the hybrid as compared to Nistari strain. However, the ovarian weight was higher in both the bivoltine breeds and their hybrid than that of Nistnri. Higher ovarian weight together with more protein and RNA concentrations reflect the preparatory phase for production of diapausing eggs by the bivoltines. This is indicated by the production of more number of eggs by the bivoltine silkmoths and their hybrid. The variations in biochemical parameters studied herein, thus establish a distinct difference in the overt reproductive physioiogy between multivoltine and bivoltine silkworms.
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