Unlike some color morphs (like albino for instance) this color morph really occurs in relative high numbers in the wild and as such it could be seen as one of the few “naturally occurring” color morphs. Jump to navigation Jump to search. The belly may be white, yellowish, or bluish. … Common garter snake, Thamnophis sirtalis, from Linn County, Iowa. Lateral stripe is on the second and third rows of scales. Thamnophis sirtalis parietalis.

Common Garter Snake (Thamnophis sirtalis) Common Garter Snake Thamnophis sirtalis. A specimen from Ringgold County had red pigment on the underside of the tail.

Another subspecies, the red-sided gartersnake (Thamnophis sirtalis parietalis), is found in the western half of the state. The melanistic morph is truly the first and most classic color morph of Thamnophis.. The melanistic morph is truly the first and most classic color morph of Thamnophis.. Mr Thamnophis Join Date Jul 2006 Location Salt Lake City, Utah Posts 4,636 Country: Re: Sirtalis or parietalis? These results suggest the pineal gland is necessary for both the transduction of environmental stimuli during winter dormancy and garter snakes (Thamnophis sirtalis parietalis), pinealectomy prior to hibernation abolishes courtship behavior upon spring emergence (Nelson et al., 1987; Crews et al., 1988; Mendonça et al., 1996a).

Mendonça MT(1), Tousignant AJ, Crews D. Author information: (1)Department of Zoology, University of Texas at Austin 78712, USA.

A red-sided garter snake, Thamnophis sirtalis parietalis, from Monroe County, Iowa. That looks like a parietalis to me, not an intergrade. Unlike some color morphs (like albino for instance) this color morph really occurs in relative high numbers in the wild and as such it could be seen as one of the few “naturally occurring” color morphs.

From Wikispecies. The red-sided garter snake, Thamnophis sirtalis parietalis is an ideal model for the study of chemical or pheromonal communication in vertebrates. Lateral stripe is on the second and third rows of scales. Taxonavigation .

The red-sided garter snake (Thamnophis sirtalis parietalis) is the most well-studied species that exhibits a dissociated reproductive pattern. Thamnophis sirtalis parietalis.

Male red-sided garter snakes emerge from winter dormancy and immediately exhibit intense breeding activity that can last as long as 4 to 6 wk. A specimen from Ringgold County had red pigment on the underside of the tail.

Thamnophis sirtalis parietalis (red-sided garter snake): This California subspecies of common garter snake can be stunning. Using male red‐sided garter snakes, Thamnophis sirtalis parietalis , as a model, we investigated the relationship between telomere length in sperm cells, blood cells telomere length and a growth proxy (age‐adjusted body length and mass).