scholarly journals The Effect of Protein Content of an Artificial Diet on Protease and Antiviral Activities of the Gut Juice of the Silkworm, Bombyx mori : Lepidoptera : Bombycidae

1990 ◽  
Vol 25 (1) ◽  
pp. 150-152 ◽  
Author(s):  
Hitoshi WATANABE ◽  
Masao NAGATA ◽  
Yu-Xing WANG
Keyword(s):  
Protein Content ◽  
Bombyx Mori ◽  
Artificial Diet ◽  
Antiviral Activities ◽  
Silkworm Bombyx Mori

scholarly journals Changes in the total protein, carbohydtate and lipid contents in selected tissues of silkworm, Bombyx mori L. under the influence of a juvenoid R394

2017 ◽  
Vol 16 ◽  
pp. 27
Author(s):  
K. Sashindran Nair ◽  
Jula S. Nair ◽  
V.A. Vijayan
Keyword(s):  
Protein Content ◽  
Bombyx Mori ◽  
Total Protein ◽  
Fat Body ◽  
Silk Gland ◽  
Total Carbohydrate ◽  
Primary Metabolites ◽  
Lipid Contents ◽  
Bombyx Mori L ◽  
Silkworm Bombyx Mori

A juvenoid. R394 (Ethyl 9-cyclohexyl-3,7-dimethyl-2,4-nonadienoate) was applied topically to 5th instar silkworm, Bombyx mori L. larvae (Hybrid: KA x NB4D2) at a dose of 0.039 nl/larva at 24, 48, 72 and 96 h, for silk yield improvement. Three major selected tissues viz., posterior silk gland (PSG), haemolymph and fat body were collected from fully-grown larvae and the total protein, total carbohydrate and total lipid contents were estimated following standard procedures. The result indicated that the content of these primary metabolites varied significantly in the selected tissues depending on the time of juvenoid application. The highest protein content was observed in the haemolymph and silk gland in the larvae treated at 72 h whereas the fat body protein content was lowest for the same treatment. The total carbohydrate was recorded lowest in the 72 h treated larvae as against the highest in the control both in haemolymph and fat body with no significant change in PSG. The total lipid content did not show any notable variation in the concentration on juvenoid administration except in the silk gland treated up to 72 h which showed a decline. The results indicate that the juvenoid induces tissue-specific responses in terms of turnover in primary metabolites which commensurates with the corresponding changes observed in the cocoon weight and cocoon shell weight.

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