Strategies animal mating

The main occasions for cooperation animal are GALANTE, the copulation and breeding. The variety of responses to the need to work originates various mating strategies.

These strategies are as follows. First mention monogamy, which is the union in which both are involved throughout the reproductive process, for example, in the case of most birds. Then there's polygamy, where one male was aparea with several females, as do orangutans, gorillas, sea lions and Ornitorrinco. And lastly, polyandry, where a female is paired several males, for example, quail or female chimpanzee. In the latter case sends biology, since the female is fertile only every seven years, so it accepts be mounted by all males in the group, she makes sure that fertilization and not wasted an opportunity so valuable over time.

In each case, the strategy that best guarantees the reproduction which is extracted the nature and prevailing for each species.

Returning to monogamy, it is important to spell out that there has been a balance between conflicting interests. This happens because they raise new beings is so expensive that requires the collaboration of two members to carry it out, as in many birds. Another source suggests that when the couple is known, facilitates the reproduction, what happens, for example, long-lived species like the orca, where factors such as memory. In mammals, the female is enough alone to breastfeed for farming, so the marriage is often merely seasonal: lasts little more than the sexual encounter.

When the time comes to mating, there are a number of general characteristics. Most of the fish, for example, makes an external fertilization, in which the male and female get together during the time of reproduction. The female releases the eggs and the water with their male sperm. Species such as the hippocampus or mullet actual real parents are responsible, because males are responsible for hatching eggs. The first, on a specific bag, while the mullet in the mouth takes about eight days.

Although amphibians are coupled, its external fertilization is because the male has no penis. They mounted the female until they deposited eggs, a process that can be extended several days, and watering them with his sperm.

In birds, the male usually placed over the female, join sewers (only holes, which serve both for the sperm to excrement) and transferred semen to the female genital organs. The watercraft (such as ducks, geese, swans, and others), the male has developed a small penis hidden that excels in sexual intercourse.

Almost all male reptiles have penis: the crocodile and turtle male is similar to that of mammals, lizards and snakes look but one that actually are two, if only part of the side that tap. This turns upside down and is fixed to the female. They, store sperm and use it at intervals until several months or even years later.

In mammals, it is usual that the male to female mountain behind, do some pelvic movements, ejaculation and withdraw.