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Size Trade-off: Horns vs. Copulatory Organs

Photo of dung beetle males examined in the study.

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).

Credit: Armin Moczek


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Photo of dung beetle males examined in the study.

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


Download the high-resolution JPG version of the image. (1.7 MB)

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Photo of Harald Parzer and Armin Moczek in the laboratory at Indiana University.

Harald Parzer and Armin Moczek in the laboratory at Indiana University.

Credit: Armin Moczek, Indiana University


Download the high-resolution JPG version of the image. (1.6 MB)

Use your mouse to right-click (Mac users may need to Ctrl-click) the link above and choose the option that will save the file or target to your computer.