Big Testes or Big Horns? It’s One or the Other for Male Beetles

Publication: National Geographic News   Date: October 16, 2007   View Article

Big horns or big testes? It’s one or the other for maturing male dung beetles looking to ensure reproductive success, a new study suggests.

The finding confirms a theory that beetles have evolved in response to trade-offs between the two traits.

Males of most species either get weapons to guard their access to females or a greater shot at successful insemination when they mate.

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