The penalty of having a sister -- why sibling sex matters for male saiga antelopes

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The penalty of having a sister -- why sibling sex matters for male saiga antelopes
Having a twin sister could put male saiga antelopes at a reproductive disadvantage, says new research published today. The study shows that male twins with a sister are born lighter than those with a brother, making them smaller than the optimal size for males. The research also shows that saigas are the supermums of the hoofed animal world with no other similar species investing more in their offspring during pregnancy.


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Hundreds of new marine species discovered: Australian scientists

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Hundreds of new marine species and previously uncharted undersea mountains and canyons have been discovered in the depths of the Southern Ocean, Australian scientists said Wednesday.

Siren voice means she's fertile

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A woman raises the pitch of her voice during her most fertile period of the month in an unconscious boost to her femininity, according to a study published Wednesday in the British journal Biology Letters. ...

DNA could reveal your surname

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(PhysOrg.com) -- Scientists at the world-leading Department of Genetics at the University of Leicester – where the revolutionary technique of genetic fingerprinting was invented by Professor Sir Alec Jeffreys- are developing ...

Economists: Tough measures needed to cure economic ills

Oct 07, 2008 | User rating: not rated yet
(PhysOrg.com) -- An ailing financial industry is going to need strong medicine to pull out of a deepening credit crunch brought on by risky loans and deregulation, Purdue University economists said Monday.

Koalas calling

Oct 07, 2008 | User rating: not rated yet
With the help of mobile phone technology, UQ researchers are set to decipher the distinctive grunting noises made by male koalas during the spring mating season.
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