Swallows of the north temperate zone display a wide variety of territorial behaviour during
the breeding season, but as soon as breeding is over, they all appear to adopt a pattern of …

Abstract The Homeobox (Hox) genes direct the development of tetrapod digits. The
expression of Hox genes may be influenced by endogenous sex steroids during …

Repeated non‐invasive sampling of zebrafish Danio rerio sperm was conducted, sperm
counts were obtained and a method for measurement of DNA damage in sperm was …

Sperm morphometry and motility are important male traits affecting fertility and post-
copulatory competitive ability. However, studies examining consistency in sperm traits over …

The “good-genes” hypothesis to explain female extra-pair mating states that females benefit
from this behavior by acquiring better genes for their offspring. Despite extensive research …

Within the development of individual organisms, the period of early growth has been
identified as critical to performance later in life and fitness (Lindström 1999; Watson et al …

Swallows of the north temperate zone display a wide variety of territorial behaviour during
the breeding season, but as soon as breeding is over, they all appear to adopt a pattern of …