| 文件类型： |
文章 |
| 所有的著者/提供者： |
Robert D Aldridge |
| ISSN: | 0022-1511 |
|---|
| OCLC号码： |
480283923 |
| 语言注释： |
English |
| 注意： |
FIGURE 1. Photomicrographs of cross sections of portions of the reproductive tract of Arizona elegans. A. Ductuli efferentia. B. Ductulus epididymidis; stereocilia project into lumen. C. Ductus epididymis in June; lumen contains large mass of sperm. D. April condition of seminiferous tubule Sertoli cells and spermatogonia.
FIGURE 2. Photomicrographs of cross sections of the testis of Arizona elegans. A. Seminiferous tubule in late June. B. Seminiferous tubule in early September. |
| 奖励： |
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摘要：
Seasonal spermatogenesis was examined in sympatric Crotalus viridis and Arizona elegans in New Mexico. Seminiferous tubule recrudescence and spermatogenesis were similar in these species but were delayed six weeks in A. elegans. This delay appeared to be due to differences in seasonal and diel activities of the two species. The initiation and completion of spermatogenesis can be experimentally induced by warm temperatures, in the abence of a photoperiod (OL:24D) in A. elegans.
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文章 : 英语