The Horn Is Not a Dilemma

A Rhinoceros Beetle  
Photo: Osaka Harmony Museum

A Rhinoceros Beetle Photo: Osaka Harmony Museum

Rhinoceros Beetles are noted for the long horns present in male beetles. The horns are used for defending territory and a male with a longer horn can usually best a male with a shorter horn and thus be more likely to mate with a female. This correlation between long horn size and mating success selects for males with long horns. However, there is a limit to horn size. Horns that are too large must have some negative effects that oppose the…

Source: Living With Insects Blog

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