We then determined mean strain differences in 36 commonly assessed behavioral measures to compare between-experiment variation for the standardized and heterogenized design. Whereas strain differences ...

1. Clutch sizes generally increase with latitude, and are smaller at southern latitudes compared with equivalent northern ones. 2. Descriptions of such patterns and attempts to identify their causal ...

Identifying intrinsic and extrinsic sources of variation in life history traits among populations has been well-studied at the post-embryonic stage but rarely at the embryonic stage. To reveal these ...