QUICK SEARCH:   [advanced] Author: Keyword(s):
Home     Help     Feedback     Subscriptions     Archive     Search     Table of Contents

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by VAN HANDEL, E. Search for Related Content PubMed PubMed Citation Articles by VAN HANDEL, E.

Journal of Experimental Biology 44,523-528 (1966)
Published by Company of Biologists 1966

The Thermal Dependence of the Rates of Glycogen and Triglyceride Synthesis in the Mosquito

EMILE VAN HANDEL ¹

¹ Florida State Board of Health, Entomological Research Center, Vero Beach, Florida

1. Net synthesis of glycogen and triglycerides produced from 1 mg. of sugar by the female mosquito A. sollicitans was determined at different temperatures.

2. At each temperature 0·2 mg. of glycogen and 0·13-0·14 mg. of triglycerides was synthesized from 1 mg. of sugar.

3. The logarithm of the rate constant (the time required to synthesize 75 % of the maximum) was proportional with the reciprocal of the absolute temperature.

4. For triglyceride synthesis the Q₁₀ = 3 from 10 to 30° C.; for glycogen synthesis the Q₁₀ = 5 from 10 to 22·5°C., but from 22·5 to 35° C. the rate of glycogen synthesis was independent of the temperature (Q₁₀ = 0).

5. Crop emptying and sugar absorption are not rate-limiting factors.

6. Medial neurosecretory cells, which limit the maximum amount of glycogen that can be synthesized from sugar, do not affect the rate of synthesis.