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Function Of Dorsal Fins In Bamboo Shark During Steady Swimming, Anabela Maia, Cheryl A. Wilga
Function Of Dorsal Fins In Bamboo Shark During Steady Swimming, Anabela Maia, Cheryl A. Wilga
Anabela M Maia
To gain insight into the function of the dorsal fins in white-spotted bamboo sharks (Orectolobiformes: Hemiscyillidae) during steady swimming, data on three-dimensional kinematics and electromyographic recordings were collected. Bamboo sharks were induced to swim at 0.5 and 0.75 body lengths per second in a laminar flow tank. Displacement, lag and angles were analyzed from high-speed video images. Onset, offset, duration, duty cycle and asynchrony index were calculated from three muscle implants on each side of each dorsal fin. The dorsal fins were displaced more laterally than the undulating body. In addition, the dorsal tips had larger lateral displacement than the …
Comparative Anatomy And Dorsal Fin Muscle Activity During Turning Maneuvers In Two Shark Species, Anabela Maia, Cheryl D. Wilga
Comparative Anatomy And Dorsal Fin Muscle Activity During Turning Maneuvers In Two Shark Species, Anabela Maia, Cheryl D. Wilga
Anabela M Maia
Stability and procured instability characterize two opposing types of swimming, steady and maneuvering, respectively. Fins can be used to manipulate flow to adjust stability during swimming maneuvers either actively using muscle control or passively by structural control. The function of the dorsal fins during turning maneuvering in two shark species with different swimming modes is investigated here using musculoskeletal anatomy and muscle function. White-spotted bamboo sharks are a benthic species that inhabits complex reef habitats and thus have high requirements for maneuverability. Spiny dogfish occupy a variety of coastal and continental shelf habitats and spend relatively more time cruising in …