Males that mate more often are more insecure about their social status than those mating less, according to new research on the behaviour of burying beetles.
Evolution
Mar 9, 2015
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Like many social mammals, ravens form different types of social relationships – they may be friends, kin, or partners and they also form strict dominance relations. From a cognitive perspective, understanding one's own ...
Plants & Animals
Apr 23, 2014
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Some mammals may have evolved to synchronise births as a way of evading the threat of infanticide, according to a study led by the University of Exeter.
Evolution
Dec 23, 2013
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Male orangutans plan their travel route up to one day in advance and communicate it to other members of their species. In order to attract females and repel male rivals, they call in the direction in which they are going ...
Plants & Animals
Sep 11, 2013
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Female social dominance over males is rare among mammal species. Bonobos, one of our closest living relatives, are known for females holding relatively high social statuses when compared to males; though this is puzzling ...
Plants & Animals
Jul 15, 2013
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For animals, prevailing in a fight affects their likelihood of winning future conflicts. The opposite is true of losing a fight. The sex hormone testosterone is often believed to mediate this "winner effect". Researchers ...
Plants & Animals
Apr 5, 2013
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Natural selection can be an agonizingly long process. Some organisms have a way of taking matters into their own hands, or—in the case of the ant species Cerapachys biroi—mandibles.
Plants & Animals
Feb 1, 2013
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(PhysOrg.com) -- The lone bull elephant is an image as iconic to the African savanna as the lonesome cowboy on horseback is to the American West. Although female elephants form tightly knit groups guided by a matriarch, ...
Plants & Animals
Sep 15, 2011
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Being at the very top of a social hierarchy may be more costly than previously thought, according to a new study of wild baboons led by a Princeton University ecologist.
Social Sciences
Jul 14, 2011
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(PhysOrg.com) -- In African cichlid fish society, only the dominant male reproduces. But Stanford researchers have found that if the dominant male disappears, a subordinate cichlid can rise to the procreative occasion with ...
Plants & Animals
Jul 14, 2011
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