At the eastern coast of Australia have discovered an unprecedented open society dolphins - bottlenose dolphins.
Most mammals, including people, live in areas of the border. Dolphins, which wrote the journal Proceedings of the Royal Society B, have no such boundaries, although the relationship between dolphins incredibly intense.
"Other mammals with complex social relationships live in semi-groups, which are based on one or two more reproductive females," - said study author Richard Connor (Richard Connor). In this case, the area and these groups of animals are protected by one or both sexes.
Open Society - a society that does not have any protected borders, scientists said. Connor and his colleagues analyzed the habitat and behavior of 120 adult dolphins on a fairly large area in Shark Bay, Western Australia. They drew attention to the males and their very complex social life.
Male dolphins - bottlenose dolphins were seen in common bisexual relations, while sometimes they were exclusively homosexual relationships. Male couples, and sometimes even the trio combined to fertilize individual females during the mating season. Most males are also members of other unions, consisting of 4-14 males. Such relationship has lasted a long time, one of the observed groups held together for 17 years.
Initially, researchers believed that the dolphins live about as chimpanzees, that is male friendship in their community is very strong, but was commonly patrol and protect the territory of its community. Due to the fact that the sea area is open space, Shark Bay dolphins might have different zones, which would coincide with the zones of other groups in the area.
While dolphins can be more aggressive, their way of life called "make love, not war" seems too peaceful and not like the lifestyle of other mammals, including humans.
"We've seen quite a little aggression from females - Connor said. - Sometimes they can be aggressive, but it happens very rarely, and barely noticeable." As for males, although they can show aggression will not squabble over trifles.
Terrestrial mammals are usually more attached to their home, although survival may depend on the mutual dependence of both humans and dolphins.
Connor and his colleagues believe that the suborder of toothed whales (including sperm whales and dolphins), people and elephants form a "big three" in the animal world, as we all have big brains, complex social life, living in the overlapping areas and spend relatively little physical strength to move. The slowest of the group - the elephants.
"Young elephants can not run and hide and are just a good steak" - says Connor. Likely group to help develop animal brain, social networks and so on.
Most mammals, including people, live in areas of the border. Dolphins, which wrote the journal Proceedings of the Royal Society B, have no such boundaries, although the relationship between dolphins incredibly intense.
"Other mammals with complex social relationships live in semi-groups, which are based on one or two more reproductive females," - said study author Richard Connor (Richard Connor). In this case, the area and these groups of animals are protected by one or both sexes.
Open Society - a society that does not have any protected borders, scientists said. Connor and his colleagues analyzed the habitat and behavior of 120 adult dolphins on a fairly large area in Shark Bay, Western Australia. They drew attention to the males and their very complex social life.
Male dolphins - bottlenose dolphins were seen in common bisexual relations, while sometimes they were exclusively homosexual relationships. Male couples, and sometimes even the trio combined to fertilize individual females during the mating season. Most males are also members of other unions, consisting of 4-14 males. Such relationship has lasted a long time, one of the observed groups held together for 17 years.
Initially, researchers believed that the dolphins live about as chimpanzees, that is male friendship in their community is very strong, but was commonly patrol and protect the territory of its community. Due to the fact that the sea area is open space, Shark Bay dolphins might have different zones, which would coincide with the zones of other groups in the area.
While dolphins can be more aggressive, their way of life called "make love, not war" seems too peaceful and not like the lifestyle of other mammals, including humans.
"We've seen quite a little aggression from females - Connor said. - Sometimes they can be aggressive, but it happens very rarely, and barely noticeable." As for males, although they can show aggression will not squabble over trifles.
Terrestrial mammals are usually more attached to their home, although survival may depend on the mutual dependence of both humans and dolphins.
Connor and his colleagues believe that the suborder of toothed whales (including sperm whales and dolphins), people and elephants form a "big three" in the animal world, as we all have big brains, complex social life, living in the overlapping areas and spend relatively little physical strength to move. The slowest of the group - the elephants.
"Young elephants can not run and hide and are just a good steak" - says Connor. Likely group to help develop animal brain, social networks and so on.
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