Research shows kestrels enjoy life far from the madding crowd
When it comes to survival of the fittest, stress is a good thing
When the woods get crowded, female squirrels improve their offspring's odds of survival by ramping up how fast their offspring grow.
Apr 18, 2013
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Power struggles are best kept out of the public eye
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". ...
Apr 05, 2013
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Monkey study reveals why middle managers suffer the most stress
(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 ...
Apr 02, 2013
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National Zoo's giant panda Mei Xiang is artificially inseminated
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.
Mar 31, 2013
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Britain's giant pandas get in the mood
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.
Mar 13, 2013
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Chimpanzees: Hormone oxytocin likely to play key role in maintaining social relations with cooperation partners
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 ...
Jan 23, 2013
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High stress levels found in monkeys forced to spend more time foraging
(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 ...
Jan 22, 2013
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Reducing underwater noise to help health of marine wildlife
Estrogenic plants linked to altered hormones, possible behavior changes in monkeys
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 ...
Nov 19, 2012
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Testosterone regulates solo song of tropical birds
(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 ...
Oct 31, 2012
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'Semi-dwarf' trees may enable a green revolution for some forest crops
Researchers find lower corticosterone levels in eggs of hens with access to nest boxes
A study of the welfare of caged production hens has recommended chickens have access to a nest box to lay their eggs without being disturbed.
Sep 27, 2012
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Ethylene of no effect: Why peppers do not mature after picking
(Phys.org) -- The plant hormone ethylene lets green tomatoes ripen even after the harvest, whereas the closely related chili peppers show no such effect. Researchers from the Max-Planck-Institute of Molecular ...
Aug 02, 2012
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Fla. lake contaminants affect alligator weight, biological responses in offspring
(Phys.org) -- Five-month-old female alligators exposed during development to toxins found in a polluted Florida lake show changes in ovarian gene function and decreased body weight at hatching, but paradoxically showed accelerated ...
Jul 20, 2012
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