The metabolic relationship between the formation of the ABO (H) blood group phenotype
and human fertility is evident in the case of the (Oh) or Bombay blood type, which Charles …

Male reproductive success depends on the competitive ability of sperm to fertilize the ova,
which should lead to strong selection on sperm characteristics. This raises the question of …

Inbreeding may increase the extinction risk of small populations. Yet, studies using modern
genomic tools to investigate inbreeding depression in nature have been limited to single …

Background The reduction in phenotypic performance of a population due to mating
between close relatives is called inbreeding depression. The genetic background of …

Hibernating ground squirrels rely on a short active period for breeding and mass accrual,
and are thus vulnerable to extreme climate events that affect key periods in their annual …

In many animal species, organismal performance declines with age in a process known as
aging or senescence. Senescence typically leads to a deterioration of physiological …

Over the last 50 years, sperm competition has become increasingly recognised as a potent
evolutionary force shaping male ejaculate traits. One such trait is sperm swimming speed …

Abstract The Pacific oyster (Crassostrea gigas) has been widely cultured as a commercially
important bivalve. Intercrossing of inbred strains is regarded as an efficient method to …

Postcopulatory sexual selection may promote evolutionary diversification in sperm form, but
the contribution of between-species divergence in sperm morphology to the origin of …

It has been hypothesized that carotenoid-based sexual ornamentation signals male fertility
and sperm competitive ability as both ornamentation and sperm traits may be co-affected by …