When the woods get crowded, female squirrels improve their offspring's odds of survival by ramping up how fast their offspring grow.
Plants & Animals
Apr 18, 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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(Phys.org) —A study by the universities of Manchester and Liverpool observing monkeys has found that those in the middle hierarchy suffer the most social stress. Their work suggests that the source of this stress is social ...
Plants & Animals
Apr 2, 2013
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They closely monitored her hormone levels, watched her behavior to make sure the time was right and set up a quiet night with a mate.
Plants & Animals
Mar 31, 2013
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He is performing handstands and eating constantly, and she is spraying her home with alluring scents—all the signs point to mating season for Britain's giant pandas.
Plants & Animals
Mar 13, 2013
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Animals which maintain cooperative relationships show gains in longevity and offspring survival. However, little is known about the cognitive or hormonal mechanisms involved in cooperation. Researchers of the Max Planck Institute ...
Plants & Animals
Jan 23, 2013
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(Phys.org)—New research shows that disturbed habitats are resulting in increasingly poor diets for monkeys, and that the additional time and energy required to find food is causing concerning levels of stress in already ...
Plants & Animals
Jan 22, 2013
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(Phys.org)—Research by scientists at the University of Bath is being used to help inform new EU legislation on levels of underwater noise, with the aim of reducing the impact of noise pollution on marine wildlife.
Ecology
Dec 11, 2012
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Eating certain veggies not only supplies key nutrients, it may also influence hormone levels and behaviors such as aggression and sexual activity, says a new study led by researchers at the University of California, Berkeley, ...
Plants & Animals
Nov 19, 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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