The buccal mass and beak of Eledone cirrhosa

The buccal mass and beak of Eledone cirrhosa

Eledone cirrhosa is one of the most common cephalopods and regulary used for research. In this application the beak and musculature of this cephalopod is shown and explained. The beak is important because most of the time it is the only remains of any cephalopod, so researchers are eager to link the appearance of the beak to species, size, gender and age. The beak is controled by a complex musculature. The musculature shown here is interpolated from the study done by Uyeno and Kier in 2006 on Octopus bimaculoides, the beak is from an Eledone cirrhosa specimen I examined myself.