Polymorphism in the snake Psammophis schokari on both sides of the desert edge in Israel and Sinai

Kark, S, Warburg, I and Werner, YL (1997) Polymorphism in the snake Psammophis schokari on both sides of the desert edge in Israel and Sinai. Journal of Arid Environments, 37 3: 513-527. doi:10.1006/jare.1997.0296


Author Kark, S
Warburg, I
Werner, YL
Title Polymorphism in the snake Psammophis schokari on both sides of the desert edge in Israel and Sinai
Journal name Journal of Arid Environments   Check publisher's open access policy
ISSN 0140-1963
Publication date 1997-11-01
Year available 1997
Sub-type Article (original research)
DOI 10.1006/jare.1997.0296
Open Access Status Not yet assessed
Volume 37
Issue 3
Start page 513
End page 527
Total pages 15
Place of publication LONDON
Publisher ACADEMIC PRESS LTD
Language eng
Abstract The snake Psammophis schokari (Colubridae) occurs in Israel and Sinai, Egypt, in three pholidotically indistinguishable morphs: (1) striped, with four dark longitudinal stripes; (2) non-striped, plain or lightly dotted; and (3) rear-striped, dark stripes on the posterior part merge anteriorly (this pattern is first described herein). From 100 museum specimens it appears that the striped snakes occur mainly in the northern mesic parts of Israel, the non-striped mainly in the southern deserts, and the rear-striped mainly in a central belt. The distributions are correlated to rainfall, solar radiation and vegetation. This polymorphism may be maintained by crypsis, thermoregulation or both. (C) 1997 Academic Press Limited.
Keyword Psammophis
snakes
polymorphism
coloration
eco-geographic gradient
Thamnophis-Sirtalis
Color Pattern
Populations
Reptiles
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: ResearcherID Downloads - Archived
 
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