News tagged with sexual selection
Ecological speciation by sexual selection on good genes: Is speciation adaptive?
15 hours ago |
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Darwin suggested that the action of natural selection can produce new species, but 150 years after the publication of his famous book, 'On the Origin of Species', debate still continues on the mechanisms of speciation. New ...
Studies suggest males have more personality
Nov 18, 2009 |
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(PhysOrg.com) -- Males have more pronounced personalities than females across a range of species - from humans to house sparrows - according to new research. Consistent personality traits, such as aggression ...
For fish, bigger doesn’t always mean healthier
Nov 17, 2009 |
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(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 ...
Why do animals, especially males, have so many different colors?
Oct 31, 2009 |
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(PhysOrg.com) -- In new research, UCLA scientists claim that "secondary sexual traits" like coloring may let animals know which species to avoid fighting.
Male seahorses like big mates
Jul 07, 2009 |
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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 ...
Why do we choose our mates? Ask Charles Darwin, prof says
Jun 16, 2009 |
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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 ...
Evolution of human sex roles more complex than described by universal theory
Apr 24, 2009 |
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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 ...
Sexual Encounters of the Third Kind: Darwin's Beetles Still Producing Surprises
Biology /
Feb 06, 2009 |
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(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 ...
Researchers Discover Size Does Matter For NZ Insects
Biology /
Oct 28, 2008 |
4.3 / 5 (4) |
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(PhysOrg.com) -- After a night on the prowl, locating a willing mate holds the promise of a private cuddle, a whole day of canoodling, and 14-15 opportunities to “make hay.” For the giant weta of New Zealand, ...
Lightweight and long-legged males go the distance for sex
Biology /
Sep 05, 2008 |
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Finding a mate can take considerable legwork as recently illustrated by the flightless and nocturnal Cook Strait giant weta Deinacrida rugosa. This cricket relative is found in New Zealand and is one of the ...
