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    Dive, food and exercise effects on blood microparticles in Steller sea lions (Eumetopias jubatus) : exploring a biomarker for decompression sickness

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    Fahlman-AJP-accepted.pdf (219.5Kb)
    Date
    2016-02
    Author
    Fahlman, Andreas  Concept link
    Moore, Michael J.  Concept link
    Trites, Andrew W.  Concept link
    Rosen, David A. S.  Concept link
    Haulena, Martin  Concept link
    Waller, Nigel  Concept link
    Neale, Troy  Concept link
    Yang, Ming  Concept link
    Thom, Stephen R.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/7774
    As published
    https://doi.org/10.1152/ajpregu.00512.2015
    Keyword
     Sea lion; Decompression; Stress; Apnea; Diving; Bubbles 
    Abstract
    Recent studies of stranded marine mammals indicate that exposure to underwater military sonar may induce pathophysiological responses consistent with decompression sickness (DCS). However, DCS has been difficult to diagnose in marine mammals. We investigated whether blood microparticles (MPs, measured as number/μl plasma), which increase in response to decompression stress in terrestrial mammals, are a suitable biomarker for DCS in marine mammals. We obtained blood samples from trained Steller sea lions (Eumetopias jubatus, 4 adult females) wearing time-depth recorders that dove to predetermined depths (either 5 or 50 m). We hypothesized that MPs would be positively related to decompression stress (depth and duration underwater). We also tested the effect of feeding and exercise in isolation on MPs using the same blood sampling protocol. We found that feeding and exercise had no effect on blood MP levels, but that diving caused MPs to increase. However, blood MP levels did not correlate with diving depth, relative time underwater, and presumably decompression stress―possibly indicating acclimation following repeated exposure to depth.
    Description
    Author Posting. © The Author(s), 2016. This is the author's version of the work. It is posted here by permission of American Physiological Society for personal use, not for redistribution. The definitive version was published in American Journal of Physiology - Regulatory, Integrative and Comparative Physiology 310 (2016): R596-R601, doi:10.1152/ajpregu.00512.2015.
    Collections
    • Biology
    Suggested Citation
    Preprint: Fahlman, Andreas, Moore, Michael J., Trites, Andrew W., Rosen, David A. S., Haulena, Martin, Waller, Nigel, Neale, Troy, Yang, Ming, Thom, Stephen R., "Dive, food and exercise effects on blood microparticles in Steller sea lions (Eumetopias jubatus) : exploring a biomarker for decompression sickness", 2016-02, https://doi.org/10.1152/ajpregu.00512.2015, https://hdl.handle.net/1912/7774
     

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