Artificial night-time lighting has a diverse range of effects across the natural world and should be limited where possible, researchers say.
Ecology
Nov 2, 2020
0
337
A pair of studies led by Indiana University researchers provide new evidence that when it comes to evolution, the testes may play a key role.
Evolution
Jun 15, 2016
0
19
How picky should females and males be when they choose a mate? How fiercely should they compete for mates? And how much should they engage in raising their offspring? The answers to these questions largely depend on the ratio ...
Evolution
Nov 29, 2022
0
8
Red squirrels living in a low-stress environment harbour healthier communities of micro-organisms, a result that might hold implications for human health, according to a new University of Guelph-led study.
Plants & Animals
Jan 5, 2016
2
841
(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
0
0
(PhysOrg.com) -- In many bird species males have a more elaborate plumage than females. This elaborate plumage is often used to signal body condition, to intimidate rivals or to attract potential mates. In many cases plumage ...
Plants & Animals
Oct 21, 2011
0
0
(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 Plant Physiology ...
Biotechnology
Aug 2, 2012
5
0
(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
0
0
(Phys.org) —A team of researchers with members from the U.S. Hungary, France and Spain has found that birds that have proportionally bigger brains tend to experience less stress than those with proportionally smaller brains. ...
Proper development of the fetal penis requires not just testosterone from the testes, but a second hormone produced by other tissues, including the placenta, according to a new study publishing February 14 in the open-access ...
Plants & Animals
Feb 14, 2019
4
427
