Young male fruit flies make females fight each other more

Mating changes female behavior across a wide range of animals, with these changes induced by components of the male ejaculate, such as sperm and seminal fluid proteins. However, males can vary significantly in their ejaculates, ...

Battling bugs help solve mysteries of weapon evolution

Remember "the first rule of Fight Club?" That's right: "You don't talk about Fight Club." Luckily, the rules of Hollywood don't apply to science. In new published research, University of Arizona researchers report what they ...

Large mammals make soil more fertile in tropical forests

The White-lipped peccary (Tayassu pecari) is a boar-like hoofed mammal found throughout Central and South America. These animals roam the forest in bands of 50 to 100 individuals, eating a wide variety of foods. In Brazil's ...

Ants adapt tool use to avoid drowning

Researchers have observed black imported fire ants using sand to draw liquid food out of containers, when faced with the risk of drowning. This is the first time this sophisticated tool use has been reported in animals. These ...

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