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    Fine-Scale Movements and Behaviors of Whale Sharks, Rhincodon typus, in a Seasonal Aggregation near Al Lith, Saudi Arabia

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    Name:
    Lu Sun Dissertation.pdf
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    2.151Mb
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    PDF
    Description:
    Lu Sun Dissertation
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    Type
    Dissertation
    Authors
    Sun, Lu cc
    Advisors
    Berumen, Michael L. cc
    Committee members
    Genton, Marc G. cc
    Jones, Burton cc
    Kaartvedt, Stein cc
    Program
    Marine Science
    KAUST Department
    Biological and Environmental Science and Engineering (BESE) Division
    Date
    2016-12
    Embargo End Date
    2017-12-06
    Permanent link to this record
    http://hdl.handle.net/10754/621952
    
    Metadata
    Show full item record
    Access Restrictions
    At the time of archiving, the student author of this dissertation opted to temporarily restrict access to it. The full text of this dissertation became available to the public after the expiration of the embargo on 2017-12-06.
    Abstract
    Movement and behavior studies are traditional yet effective ways to understand the biology and ecology of a species. For an endangered species like the whale shark (Rhincodon typus), a comprehensive knowledge of its movement and behavior is particularly critical for successful management and conservation. For this dissertation, acoustic telemetry and biologging tagging studies were carried out at a seasonal whale shark aggregation site near Al Lith in the Saudi Arabian Red Sea. Acoustic telemetry data revealed consistent path usage in a narrow longshore area with patterns in seasonality and diel horizontal movements within a smaller scale. Some individuals specifically concentrated on this path and made non-stop back and forth movements along it. In another dimension, depth use of whale sharks derived from biologgers showed distinct diel patterns. The sharks heavily utilized shallow waters with mixed depth usage consisting of surface swimming and varied types of dives, which explained the data of previous visual surveys. Vertical velocities indicated potential energy expenditure strategies that were further investigated based on acceleration data. Energy expenditure data suggested strategies that fine-tuned foraging efforts to optimize the balance between feeding and foraging. However, while these strategies fit well in the natural habitat, local human impacts could be of great disturbance if not well managed.
    Citation
    Sun, L. (2016). Fine-Scale Movements and Behaviors of Whale Sharks, Rhincodon typus, in a Seasonal Aggregation near Al Lith, Saudi Arabia. KAUST Research Repository. https://doi.org/10.25781/KAUST-C4OSH
    DOI
    10.25781/KAUST-C4OSH
    ae974a485f413a2113503eed53cd6c53
    10.25781/KAUST-C4OSH
    Scopus Count
    Collections
    Biological and Environmental Science and Engineering (BESE) Division; Marine Science Program; PhD Dissertations

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