'Marriage' homosexual guarantees the race

The phenomenon of pairing between same-sex individuals is not only very popular in the animal world, but also a necessary adaptation to maintain species development, a study shows.

Many previous studies have shown that homosexual couples appear in more than 1,000 species, including penguins, dolphins and primates.

In a recent survey on Oahu on the Hawaiian Islands, US biologists at the University of California (USA) found that approximately one-third of the Laysan large albatross are raised here by pairs parents include two female birds. Although living in unusual 'families', the number of Laysan seagulls increased. Previously, their number decreased sharply due to lack of males.

The expert team also found that the phenomenon of homosexual spouses appeared in some species for other reasons. The fishes of the same sex pair together to promote cohesion in the herd, while the male male grasshopper parallels to kill weaker males. Recently, a pair of 'gay' penguins hatched an egg in a zoo in Germany after the eggs were put in their pens.

Dr. Nathan Bailey, an evolutionary biologist at the University of California, said previous studies failed to find the evolutionary benefits of homosexual behavior. According to him, that behavior is often the result of natural selection in an effort to maintain the species' survival. It occurs in both higher animals (bonobos, dolphins) and insects (fruit flies).

'Homosexual couples - expressed in the form of cuddling, sex or raising children - are characteristics that form during the natural selection process. That's the basic evolutionary mechanism to ensure the survival of species , 'Bailey commented.