ISSN:
0192-253X
Keywords:
Drosophila virilis
;
high temperature
;
p-esterase
;
juvenile hormone
;
Life and Medical Sciences
;
Genetics
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Biology
Notes:
Drosophila virilis stocks differing in reaction to high temperature (32°C) were studied. The sizes of the larval salivary glands, ring gland, and imaginal discs of the heat-sensitive stock 147, whose pupal (p) esterase was activated at 32°C, were found to be significantly smaller at high temperature than at 25°C. In larvae of the heat-resistant stock 101, whose p-esterase was inactivated at 32°C, the salivary glands and imaginal discs were larger under conditions of high temperature than those of the control larvae. Treatment of stock 147 larvae with ecdysone at 32°C did not affect p-esterase activity and was 100% lethal. By contrast, the juvenile hormone activated p-esterase under these conditions and normalized the development of stock 147 larvae. A scheme is suggested for the role of p-esterase in the regulation of the hormonal status of D. virilis under high temperature conditions.
Additional Material:
11 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/dvg.1020010403
