Food capture kinematics of the suction feeding horn shark, Heterodontus francisci

摘要: The goal of this study was to examine the feeding kinematics horn shark, Heterodontus francisci, a member most basal clade galeomorph sharks, Heterodontiformes. accessibility food manipulated determine if shark modulated capture. Three different methods presenting were used mimic positions prey items found in natural diet shark. Food presented unattached substrate, securely attached, or fitted snugly tube. Using high-speed video kinematic analysis, capture events examined. francisci uses inertial suction facilitated by rapid mandible depression and labial cartilage protrusion food. conforms profile characteristic both derived sharks. Unusual post-capture behaviors include body leveraging, use mouth form seal over food, chisel-like palatoquadrate protrusion. When with accessibility, one consistent pattern for that not modulated. Only varied according accessibility.