Showy peacock feathers, extravagant elk antlers and powerful crayfish claws are just a few examples of the ostentatious animal extremes used to compete for and attract mates, a process called sexual selection.
Plants & Animals
Mar 17, 2020
0
178
(PhysOrg.com) -- On the eve of Charles Darwin’s 200th birthday, researchers at the University of New Mexico and University of Montana report a new twist in sexual selection theory - the realm of evolutionary science that ...
Feb 6, 2009
1
0
Tyrannosaurs (like the famous T. rex) is not the only group of giant carnivorous dinosaur with tiny arms. Researchers discovered a new species of dinosaur with disproportionally short arms just like T. rex called the Meraxes ...
Evolution
Jul 7, 2022
1
167
California sea lions have managed to maintain—and, in the case of males, increase—their average body size as their population grows and competition for food becomes fiercer. This is in contrast to other marine mammals, ...
Plants & Animals
Apr 27, 2023
0
76
Polygamy practiced by some 19th century Mormon men had the curious effect of suppressing the overall offspring numbers of Mormon women in plural marriages, say scientists from Indiana University Bloomington and three other ...
Evolution
Feb 22, 2011
33
0
In the world of bird fashion, the guys seem to have all the fun: brighter feathers, sharper accessories, more pizzazz.
Plants & Animals
Mar 27, 2015
0
74
When you're a firefly, finding "the one" can change the world. Literally. A new study by UCSB evolutionary biologists Todd Oakley and Emily Ellis demonstrates that for fireflies, octopuses and other animals that choose mates ...
Evolution
Jun 23, 2016
1
8
The rise of the first complex life depended on vital metals brought up to the Earth's surface from far below in vast granite deposits, a new study argues.
Earth Sciences
Aug 7, 2012
12
0
In the animal kingdom, sperm usually are considerably smaller than eggs, which means that males can produce far more of them. Large numbers of tiny sperm can increase the probability of successful fertilization, especially ...
Plants & Animals
May 25, 2016
2
19
A new study challenges long-standing expectations that men are promiscuous and women tend to be more particular when it comes to choosing a mate. The research, published by Cell Press in the April issue of the journal Trends ...
Evolution
Apr 24, 2009
6
0
