(Phys.org) —Do mothers invest more care in their sons if they believe their child is destined to be a king, president or a high-powered leader?
Plants & Animals
Mar 6, 2013
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(Phys.org)—"That's so gay" is a popular expression on campuses nationwide among heterosexual students, especially young men. But why do they say it? A new University of Michigan study sheds light on this question.
Social Sciences
Jan 30, 2013
36
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In an unusual mating strategy, hard-up males of a tiny, promiscuous fish species engage in homosexual acts in a bid to entice females to copulate with them, a study said Wednesday.
Plants & Animals
Dec 12, 2012
1
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Study finds male chimpanzees may increase their chances of siring offspring by recognizing the importance of third-party relationships.
Plants & Animals
Dec 3, 2012
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(Phys.org)—In male songbirds of the temperate zone, the concentration of sex hormones is rising in spring, which leads to an increase in song activity during the breeding season. In the tropics, there has been little evidence ...
Plants & Animals
Oct 31, 2012
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(Phys.org)—An Ohio University anthropologist reports the first observation of dominance relationships among adolescent male chimpanzees, which he attributes to the composition of their community.
Plants & Animals
Sep 20, 2012
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African cichlids enjoy an alien, exotic courtship routine. A dominant male attracts choice females to his territory by dancing seductively. If the female is sufficiently impressed, she lays her eggs and immediately collects ...
Plants & Animals
Jun 13, 2012
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(PhysOrg.com) -- Pregnant female geladas show an unusually high rate of miscarriage the day after the dominant male in their group is replaced by a new male, a new University of Michigan study indicates.
Plants & Animals
Feb 23, 2012
3
0
Mate competition by males over females is common in many animal species. During mating season male testosterone levels rise, resulting in an increase in aggressive behavior and masculine features. Male bonobos, however, invest ...
Plants & Animals
Jan 23, 2012
0
0
Cichlid male nannies help out, especially if they've been sneaking.
Plants & Animals
Oct 12, 2011
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