Size Trade-off: Horns vs. Copulatory Organs

Sep 30, 2008

Shown are dung beetle males of two of the ten Onthophagus species examined in the study. From top to bottom: O. gazella (South Africa) and O. sagittarius (Indonesia).

Shown are dung beetle males of two of the ten Onthophagus species examined in the study. From top to bottom: O. watanabei (North Borneo) and O. taurus (Mediterranean).

Credit: Armin Moczek