Populations of dioecious plants commonly exhibit dissimilarities to the equilibrium expectation of a 1:1 sex ratio. Differential expenditure for reproduction between genders is cited as the primary mechanism responsible ...

Background: Seasonal variations of sexual crime have been seldom studied in the world. Santiago, a city situated at 33° south latitude with a well defined four season climate, has a reliable forensic registry, providing a ...

Age-dependent skewed sex ratios have been observed in bird populations, with adult males generally outnumbering females. This trend is mainly driven by higher female mortality, sometimes associated with anthropogenic ...

Background: Highly active antiretroviral therapy (HAART) has contributed to increase survival in women infected with human immunodeficiency virus (HIV) infection. Thus, an important proportion of these women are able ...

Background: Highly active antiretroviral therapy (HAART) has contributed to increase survival in women infected with human immunodeficiency virus (HIV) infection. Thus, an important proportion of these women are able ...

It is now well documented that androgen and estrogen signaling dur- ing early development cause a sexual dimorphism in second-to-fourth digit length ratio (2D:4D). It is also well documented that males of mam- malian ...

This study analyzed a population of the spider crab Epialtus brasiliensis, in regard to its size distribution, sex ratio and sexual maturity. The study was conducted on a rocky shore in the Ubatuba region, state of São ...