...Casey A. Gilman; Blair O. Wolf SUMMARY Obtaining population-level life history data such as egg and clutch size in reptiles has most often required that individuals be sacrificed. This prevents a reexamination of individuals over intra-annual and inter-annual time scales,limiting insight...

...Tomasz Antkowiak; Ronald Chase SUMMARY Because oviposition in the land snail Helix aspersa is a metabolically expensive process coupled to a high fixed cost, one expects oviposition to occur only when the clutch size surpasses a minimum value at which the reproductive benefit exceeds the cost. We...

...Gary P. Burness; Ronald C. Ydenberg; Peter W. Hochachka ABSTRACT Intra-population variation in many fitness-related traits (e.g. clutch size) is often attributed to variation in individual parental quality. One possible component of quality is the level at which each individual can expend energy...