Differences in reproductive characteristics of two sand lizard populations from the samara region

I present data on reproductive biology of the Sand lizard studied in two geographically close populations of the Samara Region. Differences between the studied populations were revealed for body length (SVL), post-oviposition body mass, clutch mass, and mean egg mass. Hatchlings of the two populations differed significantly in mean body mass, total body length, SVL, tail length, and in the ratio of tail length to SVL.