REPRODUCTION IN THE BLACKNECK GARTER SNAKE, THAMNOPHIS-CYRTOPSIS (SERPENTES, COLUBRIDAE)

Authors
GOLDBERG SR
Citation
Sr. Goldberg, REPRODUCTION IN THE BLACKNECK GARTER SNAKE, THAMNOPHIS-CYRTOPSIS (SERPENTES, COLUBRIDAE), The Texas journal of science, 50(3), 1998, pp. 229-234
Citations number
13
Categorie Soggetti
Multidisciplinary Sciences
Journal title
The Texas journal of science → ACNP
ISSN journal
00404403
Volume
50
Issue
3
Year of publication
1998
Pages
229 - 234
Database
ISI
SICI code
0040-4403(1998)50:3<229:RITBGS>2.0.ZU;2-#
Abstract
Reproductive tissue was examined from 120 museum specimens of Thamnoph is cyrtopsis from Arizona, New Mexico, Texas and the Mexican state of Sonora. This species of garter snake appears to follow a seasonal repr oductive cycle in which maximum spermiogenesis occurs in summer-autumn . Females with enlarged follicles or developing embryos were found Mar ch-June. The mean clutch size for 25 females was 8.4 +/- 4.3 SD (range 3-24). The maximum clutch size of 24 is apparently a new record for t his species. Neonates were found June to August.