Halothane Anesthesia as a Method of Immobilizing Free-Ranging California Sea Lions (Zalophus californianus)

Thirty free-ranging California sea lions, Zalophus californianus, including 20 adult females (approximate individual weight of 100 kg) and 10 newborn pups (average weight 7.9 kg) were anesthetized using halothane and oxygen on San Miguel Island, California. The halothane was delivered through a prec...

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Bibliographic Details
Published in:Journal of zoo and wildlife medicine 1993-12, Vol.24 (4), p.482-487
Main Authors: Work, Thierry M., DeLong, Robert L., Spraker, Terry R., Melin, Sharon R.
Format: Article
Language:English
Subjects:
Anesthesia
Female animals
Heart rate
Inhalation anesthesia
Oxygen
Pups
Sea lions
Vaporizers
Wildlife
Zoos
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Summary:Thirty free-ranging California sea lions, Zalophus californianus, including 20 adult females (approximate individual weight of 100 kg) and 10 newborn pups (average weight 7.9 kg) were anesthetized using halothane and oxygen on San Miguel Island, California. The halothane was delivered through a precision, out-of-circle vaporizer in a portable semiclosed circle system anesthesia machine. Sea lions were monitored for respiratory and heart rates, and time of capture, induction, and duration of anesthesia were recorded. Twenty-nine of the 30 sea lions recovered uneventfully; one adult female became apneic and died despite resuscitation efforts. Adults had significantly lower heart and respiratory rates than pups, although induction, anesthesia, and recovery times did not differ between age groups.
ISSN:1042-7260
1937-2825