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1 April 2021 RESPIRATORY CHANGES IN STRANDED BOTTLENOSE DOLPHINS (TURSIOPS TRUNCATUS)
Andreas Fahlman, Micah Brodsky, Julie Rocho-Levine, Daniel Garcia-Parraga, Marina Ivančić, Carlos Camarena, Leonardo Ibarra, Joan Rocabert
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Abstract

Lung function (breath duration, respiratory flow [fi01_49.gif], and tidal volume [VT]), and end-expiratory O2 were measured in 19 adult bottlenose dolphins (Tursiops spp.) while at rest in water or beached for up to 10 min. The results show that inspiratory VT, expiratory VT, or inspiratory fi01_49.gif did not differ on land or in water. The average expiratory fi01_49.gif for all dolphins on land decreased by 16%, and the expiratory and total breath durations increased by 5% and 4%, respectively, compared with in water. There were temporal changes observed during beaching, where expired and inspired VT and inspired fi01_49.gif decreased by 13%, 16%, and 9%, respectively, after 10 min on land. These data suggest that dolphins compensate for the effect of gravity by adjusting respiration to maintain alveolar ventilation and gas exchange, but during extended durations, the increased work of breathing may impede ventilation and gas exchange. Continuous monitoring of lung function and gas exchange may help prevent long-term damage during out-of-water medical procedures, optimize animal transport conditions, and improve survival during stranding events.

Copyright 2021 by American Association of Zoo Veterinarians
Andreas Fahlman, Micah Brodsky, Julie Rocho-Levine, Daniel Garcia-Parraga, Marina Ivančić, Carlos Camarena, Leonardo Ibarra, and Joan Rocabert "RESPIRATORY CHANGES IN STRANDED BOTTLENOSE DOLPHINS (TURSIOPS TRUNCATUS)," Journal of Zoo and Wildlife Medicine 52(1), 49-56, (1 April 2021). https://doi.org/10.1638/2020-0033
Accepted: 15 September 2020; Published: 1 April 2021
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