A5075134703- Fish Ecology and Management Studies
- Ichthyology and Marine Biology
- Marine and fisheries research
- Physiological and biochemical adaptations
- Fish biology, ecology, and behavior
University of Hawaiʻi at Mānoa
2023
Bangor University
2020
Fish moving between different thermal environments experience heat exchange via conduction through the body wall and convection from blood flow across gills. We report a strategy of preventing convective loss at gills during excursions into deep, cold water by tropical scalloped hammerhead shark (Sphryna lewini). Adult sharks dive rapidly repeatedly warm (~26°C) surface waters to depths exceeding 800 meters with temperatures as low 5°C. Biologgers attached adult show that muscle were...
Abstract Background Great hammerhead sharks ( Sphyrna mokarran ) routinely swim on their sides and periodically roll from side to side. A previous study used wind tunnel tests with a rigid model shark demonstrate that the rolling behavior could improve swimming efficiency using tall first dorsal fin as lift-generating surface. Scalloped lewini also have proportionally taller fins compared pectoral than most species similar of great sharks, thus might exhibit behavior. This was assessed by...