Species Females

Some articles on species, female, species females, females:

Sexual Dimorphism - Examples - Species With Larger Females Than Males
... In some species such as insects, spiders, many fish, reptiles, birds of prey and certain mammals such as the spotted hyena, and blue whale, the female is larger than the male ... As an example, in some species females are sedentary and sparsely distributed, and so males must search for them ... Cases where the male is larger than the female have been studied as well, and require alternate explanations ...
Sexual Dimorphism - Evolution
... number of small male gametes relative to the larger female gametes usually lies in the development of strong sperm competition, because small sperm ... the evolution of other sexual dimorphism in many species, especially in vertebrates, including mammals ... However, in many species the females can also be larger than males, irrespective of gametes, and in some species females (usually of species in which males invest a lot in rearing offspring ...

Famous quotes containing the words females and/or species:

    If combat means living in a ditch, females have biological problems staying in a ditch for 30 days because they get infections.... Males are biologically driven to go out and hunt giraffes.
    Newt Gingrich (b. 1943)

    There are acacias, a graceful species amusingly devitalized by sentimentality, this kind drooping its leaves with the grace of a young widow bowed in controllable grief, this one obscuring them with a smooth silver as of placid tears. They please, like the minor French novelists of the eighteenth century, by suggesting a universe in which nothing cuts deep.
    Rebecca West (1892–1983)