Male nursery web spiders (Pisaura mirabilis) prepare silk-wrapped gifts to give to potential mates. Most gifts contain insects, but some gifts are inedible plant seeds or empty exoskeletons left after the prey has already ...
Plants & Animals
Nov 13, 2011
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Great tits who have as many sons as daughters acquire more grandchildren than great tits with an uneven family composition. That is because their children are reproductively more successful concludes NWO researcher Reinder ...
Plants & Animals
Dec 19, 2011
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New research from evolutionary biologists at the University of Toronto shows that the male guppy grows claws on its genitals to make it more difficult for unreceptive females to get away during mating.
Plants & Animals
Aug 2, 2013
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(PhysOrg.com) -- In a new study titled Male-Female Coevolution in the Wild: Evidence from a Time Series in Artemia Franciscana and published in Evolution, evolutionary ecologist Nicolas Rode from the Centre for Functional ...
Mate competition by males over females is common in many animal species. During mating season male testosterone levels rise, resulting in an increase in aggressive behavior and masculine features. Male bonobos, however, invest ...
Plants & Animals
Jan 23, 2012
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(Phys.org) —Researchers have discovered that the brightly coloured frills of the iconic Australian frillneck lizard (Chlamydosaurus kingii) can be used to predict the animals fighting ability.
Plants & Animals
May 28, 2013
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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
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What does it mean to be male or female in the animal kingdom? How do our own gender differences compare with those of other animals? Why do adult male elephant seals weigh more than four times as much as an adult female? ...
Plants & Animals
Jun 11, 2013
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Male fruit flies like to have a variety of sexual partners, whereas females prefer to stick with the same mate – or move on to his brothers.
Plants & Animals
Sep 24, 2013
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When faced with impossible circumstances beyond their control, animals, including humans, often hunker down as they develop sleep or eating disorders, ulcers, and other physical manifestations of depression. Now, researchers ...
Plants & Animals
Apr 18, 2013
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