27 research outputs found
Production of biosurfactant by hydrocarbon degrading Rhodococcus ruber and Rhodococcus erythropolis
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Blood Volume, Plasma Volume and Circulation Time in a High-Energy-Demand Teleost, the Yellowfin Tuna (Thunnus Albacares)
No full textSources of variation in oxygen consumption of aquatic animals demonstrated by simulated constant oxygen consumption and respirometers of different sizes
No full textAre all bony fishes oxygen regulators? Evidence for oxygen regulation in a putative oxygen conformer, the swamp eel <i>Synbranchus marmoratus</i>
Get PDFBlood pressure and heart rate during tonic immobility in the black tipped reef shark, Carcharhinus melanoptera
No full textTonic immobility was induced in black tipped reef sharks (Carcharhinus melanoptera) and heart rate and ventral aortic blood pressure recorded. Without branchial irrigation, tonic immobility was correlated with a significant depression in blood pressure and heart rate irrespective of the sharks being in air or in water. Tonic immobility with branchial irrigation resulted in a significant increase in blood pressure in sharks in air, but not in water. Heart rate was unchanged when the gills were irrigated. Intra-arterial injections of atropine abolished the bradycardia and blood pressure rise associated with tonic immobility. We conclude that, during tonic immobility, sharks are able to receive afferent information from the ventilatory system and make appropriate responses via the vagus nerve
A review of temperature and oxygen tolerance studies of tunas pertinent to fisheries oceanography, movement models and stock assessments
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