News tagged with sexual selection
For fish, bigger doesn’t always mean healthier
(PhysOrg.com) -- Female smallmouth bass tend to prefer bigger male mates, but bigger doesn’t necessarily mean healthier. That’s the finding of a new study in the latest issue of Physiological and Biochemical Zoology that i ...
Nov 17, 2009 |
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Why do animals, especially males, have so many different colors?
(PhysOrg.com) -- In new research, UCLA scientists claim that "secondary sexual traits" like coloring may let animals know which species to avoid fighting.
Oct 31, 2009 |
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High mortality rates may explain small body size
A new study suggests that high mortality rates in small-bodied people, commonly known as pygmies, may be part of the reason for their small stature. The study, by Jay Stock and Andrea Migliano, both of the University of Cambridge, ...
Oct 05, 2009 |
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Male seahorses like big mates
Male seahorses have a clear agenda when it comes to selecting a mating partner: to increase their reproductive success. By being choosy and preferring large females, they are likely to have more and bigger eggs, as well as ...
Jul 07, 2009 |
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Why do we choose our mates? Ask Charles Darwin, prof says
Charles Darwin wrote about it 150 years ago: animals don't pick their mates by pure chance - it's a process that is deliberate and involves numerous factors. After decades of examining his work, experts agree that he pretty ...
Jun 16, 2009 |
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Evolution of human sex roles more complex than described by universal theory
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 in ...
Apr 24, 2009 |
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Sexual Encounters of the Third Kind: Darwin's Beetles Still Producing Surprises
(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 ...
Biology /
Feb 06, 2009 |
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