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Paper Information

Journal:   JOURNAL OF ENTOMOLOGICAL SOCIETY OF IRAN (JESI)   September 2004 , Volume 24 , Number 1; Page(s) 1 To 16.
 
Paper: 

A STUDY ON THE EFFECTS OF LARVAL AGE ON BIOCHEMICAL MACROMOLECULES ABUNDANCE OF HAEMOLYMPH IN SILKWORM BOMBYX MORI (LEP. BOMBYCIDAE)

 
 
Author(s):  ETEBARI K.*, MATINDOOST L.
 
* Dept. of Sericulture, College of Natural Resources, University of Guilan, Somehe Sara
 
Abstract: 

The knowledge of biochemical characteristics of insects haemolymph can be a solution in physiological analysis. To determine the abundance and the range of some biochemical macromolecules in silkworm haemolymph, the amount of glucose, cholesterol, urea and uric acid in fourth and fifth instar larvae were analyzed. The results showed that except for urea as larval age increased, the abundance of these compounds in the larval haemolymph has enhanced. The amount of measured urea in fourth instar larvae were 48.94± 3.05mglml while its occurrence in the fifth instar larvae with over 87% decrease reached to 6.18± 2.4.This is mostly because of the entering of urea to synthesis process of the silkworm shell by silk glands. The amount of glucose, uric acid and cholesterol in the fourth instar larvae were 7.85± 1.03, 1.89± 0.61 and 11.52± 2.03 mg/dl respectively. While the abundance of these compounds were 18.9± 2.4, 3.22± 1.09, 24.65± 2.35 mg on deciliter, respectively for the 6th day of fifth instar larvae.

 
Keyword(s): SILKWORM, GLUCOSE, UREA, URIC ACID, CHOLESTEROL
 
References: 
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