TITLE

Estimation of amino acids, urea and uric acid in tasar silkworm, Antheraea mylitta Drury

AUTHOR(S)
Shamitha, G.; Rao, A. Purushotham
PUB. DATE
November 2008
SOURCE
Journal of Environmental Biology;Nov2008, Vol. 29 Issue 6, p893
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The tasar silkworm, Antheraea mylitta Drury Andhra local ecorace is an exclusive race of Andhra Pradesh. It is on the verge of extinction due to difficulty of acclimatisation at breeding and rearing stages As an attempt to protect this race, a method of total indoor rearing has been done. In this context, the estimation of free amino acids, excretory products- urea and uric acid were compared during the fourth and fifth instars of tasar silkworm, reared under outdoor and indoor conditions. The study has revealed that amino acids decreased in the fat body in outdoor and indoor reared laivae in contrast to thalin the haemolymph where it has gradually increased from first to third crops. This is an important finding as it reveals that indoor worms seem to adopt proteolytic activity in the haemolymph. Secondly, in the fifth instar the excretory products are more compared to fourth instarin the indoor reared worms. During fifth instar, formation of nitrogenous products lessens as silk synthesis enhances. The present study reveals that decrease in uric acid in fifth instar implies increase in growth rate and silk synthesis in both outdoor and indoor worms. The findings of the present investigation is helpful in the conservation and protection of the A. myliffa, Andhra local ecorace.
ACCESSION #
43253609

 

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