How electric fish were able to evolve electric organs

Electric organs help electric fish, such as the electric eel, do all sorts of amazing things: They send and receive signals that are akin to bird songs, helping them to recognize other electric fish by species, sex and even ...

Male wolf spiders get luckier following complex courtships

Some male wolf spiders seem to get luckier than others when it comes to courting females. The secret of their courtship? It's complicated, says a new study led by the University of Nebraska–Lincoln.

What guppy guts can teach us about evolution

On the list of scientific tools that help us understand health, evolution or the environment, the Trinidadian guppy doesn't often come to mind.

Why are male mice afraid of bananas?

Researchers from McGill University have identified a form of chemical signaling in mice to defend their offspring. The researchers found that proximity to pregnant and lactating female mice increased stress hormones in males ...

A type of wasp that cannibalizes its sibling larvae

A pair of researchers at Kobe College has found that in one species of wasp, cannibalization of sibling larvae is common. In their study, published in PLOS ONE, Yui Imasaki and Tomoji Endo describe the insects and what they ...

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