ROLE OF ECDYSTEROIDS IN THE REGULATION OF SPERM RELEASE FROM THE TESTIS OF THE GYPSY-MOTH, LYMANTRIA-DISPAR

被引：7
|
作者：
GIEBULTOWICZ, JM
FELDLAUFER, M
GELMAN, DB
机构：
[1] USDA ARS, BELTSVILLE AGR RES CTR, INST PLANT SCI, INSECT HORMONE LAB, BELTSVILLE, MD 20705 USA
[2] USDA ARS, BELTSVILLE AGR RES CTR, INST PLANT SCI, INSECT REPROD LAB, BELTSVILLE, MD 20705 USA
[3] UNIV MARYLAND, DEPT ZOOL, COLLEGE PK, MD 20742 USA
来源：
JOURNAL OF INSECT PHYSIOLOGY | 1990年 / 36卷 / 08期
关键词：
20-Hydroxyecdysone; circadian rhythm;
D O I：
10.1016/0022-1910(90)90025-B
中图分类号：
Q96 [昆虫学];
学科分类号：
摘要：
Release of mature sperm from the testes of the gypsy moth, Lymantria dispar, into the seminal ducts occurs in a daily rhythmic pattern. The rhythm of sperm release is initiated in developing pharate adults 3-4 days after spermatogenesis and development of the reproductive tract has been completed. At that time a significant decline occurs in the blood titre of RIA-detectable ecdysteroids. Infusion of 20-hydroxyecdysone into male pupae inhibits the release of sperm from the testis in a dose-dependent and age-dependent fashion. The decline in haemolymph ecdysteroid levels seems essential for the initiation of the rhythmic release of sperm from the testis, but does not appear to play a role in determining the phase of this rhythm. © 1990.
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页码：567 / 571
页数：5
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