Animals
'It's risky for male frogs out there': Female frog drags and attempts to eat screaming male
Breeding seasons can be dangerous for male frogs that attempt to impress a potential mate: They can quickly find themselves being dragged off and eaten by an unimpressed female, researchers have discovered.
For the first time, scientists in Kooragang Island in New South Wales, Australia have observed adult female green and golden bell frogs (Litoria aurea) preying on their male counterparts during breeding season. They detailed their findings in a study published June 12 in the journal Ecology and Evolution.
The researchers first observed this behavior during a survey when they heard a high-pitched squeal.
"You hear it sometimes in the field, and it's often a frog that's being predated upon," study lead author John Gould, a postdoctoral researcher in population ecology at the University of Newcastle, Australia, told Live Science.
After following the screams, Gould discovered the distress noises were coming from a male with its thigh almost completely ingested by a larger female. She was dragging him into a hole by the bank of a pond.
"The male frog really did try to stop this from occurring, so it was grabbing onto anything around it, like sticks in the ground, to stop itself from being dragged in," Gould said.
The male eventually managed to escape. The observation prompted Gould and his team to compare their nocturnal field observations of three consecutive breeding seasons with other studies that reported instances of sexual cannibalism.
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