Frogs' mating calls also attract predators

Frogs have been struggling a bit in recent years. Their populations around the world have been declining for decades, and the reasons for their loss come from many fronts. Like many other animals, frogs are losing their homes ...

The argument for sexual selection in bacteria

The evolutionary pressure to pass on DNA can produce behavior that otherwise makes no sense in a struggle to survive. Rams bash heads in fights over females; peacocks grow elaborate tail feathers that attract mates and predators ...

Sexual selection influences the evolution of lamprey pheromones

In "Intra- and Interspecific Variation in Production of Bile Acids that Act As Sex Pheromones in Lampreys," published in Physiological and Biochemical Zoology, Tyler J. Buchinger and others find that sexual selection may ...

How new species arise in the sea

For a new species to evolve, two things are essential: a characteristic—such as a colour—unique to one species and a mating preference for this characteristic. For example, individuals from a blue fish species prefer ...

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