New Publication: Genital interactions during simulated copulation among marine mammals

DiceCT reconstructions of marine mammal copulatory anatomy
CT Reconstructions of marine mammal penises inside vaginas. Images are rendered in sagittal plane for short-beaked common dolphins (D. delphis; top) and harbour seals (P. vitulina; bottom). Two-dimensional volume reconstructions on the left use sharp lung and smooth soft tissue algorithms. Three-dimensional volume renders on the right show erectile tissue in red and non-erectile tissue as transparent.

“We investigated the mechanics of copulatory interactions in marine mammals to determine how morphological diversity of genitalia correlates with function during simulated copulation. The excised penises of deceased male cetaceans and pinnipeds were distended, positioned inside the vaginas of females from the same species, and CT-scanned in situ using diceCT techniques. We found evidence of both congruent and antagonistic genital coevolution between the sexes, depending on the species. Sexual selection forces contribute to the extensive genital morphological variation observed in male and female marine mammals.”

–Lead author, Dara Orbach (@)

Head over to Proceedings B to download the pub!

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s