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Unformatted text preview: terms, the reduction in fitness of a female that squanders an egg will be greater than the reduction in fitness of a male that squanders a sperm (give or take a million). Another important component of parental investment is parental care , care of the zygote after fertilization. The amount of parental care is also frequently quite different in males and females. In species with internal fertilization the female is "stuck" with the egg after fertilization. In many species the female also cares for the young after they hatch. Males are not anatomically tied to the egg and hence are sometimes "freed" from this additional parental care. Moreover, in species where multiple matings occur, a male cannot be certain that a females offspring were fathered by him . Benefit of caring for unrelated offspring is low , a male can increase fitness by avoiding parental care....
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This note was uploaded on 11/05/2011 for the course BIOLOGY MCB2010 taught by Professor Jessicadigirolamo during the Fall '10 term at Broward College.
- Fall '10