Influence of Clutch Date on Egg and Hatchling Sizes in the Annual Clutch of Lacerta schreiberi (Sauria, Lacertidae)

with egg mass and shows no variation among years. However, egg size and hatchling SVL show among-year and interindividual variation and are not related to female SVL or relative clutch mass. Egg mass is positively correlated only with the laying date. We suggest that clutch size depends only on stored lipids remaining after wintering and environmental factors could be responsible for egg size variation during vitellogenesis.