The spermatozoon is a highly differentiated and polarized cell, with two main structures: the
head, containing a haploid nucleus and the acrosomal exocytotic granule, and the flagellum …

Mammalian sperm, the only cells that achieve their purpose outside their organism of origin,
have to swim vigorously within the female reproductive tract to reach an oocyte. Flagellar …

Mouse sperm produce enough ATP to sustain motility by anaerobic glycolysis and
respiration. However, previous studies indicated that an active glycolytic pathway is required …

Spermatozoa are diverse in form and function and these differences impact on their
fertilizing capacity. Because of considerable inter-male and inter-species differences in …

In mammals, sperm acquire fertilization ability after a series of physiological and
biochemical changes, collectively known as capacitation, that occur inside the female …

Mammalian sperm differ widely in sperm morphology, and several explanations have been
presented to account for this diversity. Less is known about variation in sperm physiology …

Sperm competition is a powerful selective force that has influenced many reproductive traits
in males and females although additional evolutionary explanations may help to understand …

ATP supply is essential for sperm performance and increases in ATP content coevolve with
enhanced sperm swimming velocity as a response to sperm competition in rodents. ATP …

The acquisition of fertilizing ability by mammalian spermatozoa, known as “capacitation,”
includes processes that depend on particular metabolic pathways. This has led to the …

Sexual selection is the pervasive force underlying the dramatic divergence of sperm form
and function. Although it has been demonstrated that testis gene expression evolves rapidly …