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    Nutritional Basis of Butterflyfish Corallivory in the Red Sea

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    JessicaMastermanThesis.pdf
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    Description:
    Final Thesis
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    Type
    Thesis
    Authors
    Masterman, Jessica
    Advisors
    Berumen, Michael L. cc
    Committee members
    Raubenheimer, David
    Rotjan, Randi
    Program
    Marine Science
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Date
    2012-12
    Embargo End Date
    2015-01-01
    Permanent link to this record
    http://hdl.handle.net/10754/262793
    
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    Access Restrictions
    At the time of archiving, the student author of this thesis opted to temporarily restrict access to it. The full text of this thesis became available to the public after the expiration of the embargo on 2015-01-01.
    Abstract
    The overall goal of this study was to elucidate the relationship between coral nutrition and the observed prey preferences exhibited by corallivorous butterflyfishes. Fifteen species of coral (thirteen hard, two soft) and stomach/hindgut contents from six species of butterflyfish were analyzed in this study, all collected from the central Saudi Arabian Red Sea. All samples were analyzed for lipid, total-nitrogen (proxy for protein), and ash (proxy for minerals and when combined with lipid data, allows for calculation of carbohydrate). Unfortunately, substantial errors were encountered in the experimental lipid data, precluding the use of this data set. Using the value of (protein/ash) as a proxy for potential nutritional quality, it was determined that Pocillopora cf. verrucosa and P. damicornis have the highest nutritional quality, while Acropora hyacinthus and Stylophora pistillata have intermediate nutritional quality, and all remaining 11 species have low nutritional quality. This suggests that the high nutritional quality of Pocillopora damicornis and Acropora hyacinthus may be the cause of the well documented predator preferences for these two species. Fish gut content samples were, on average, twice as rich in protein and half as rich in minerals as the coral tissue samples, suggesting either selective consumption of especially rich parts of the coral colony, or consumption of other food sources (facultative corallivores). In all six butterflyfish species, stomach content samples were consistently richer in protein and poorer in mineral content than the hindgut content samples; this suggests significant and measureable uptake of protein in the butterflyfish digestion process.
    Citation
    Masterman, J. (2012). Nutritional Basis of Butterflyfish Corallivory in the Red Sea. KAUST Research Repository. https://doi.org/10.25781/KAUST-C66VI
    DOI
    10.25781/KAUST-C66VI
    ae974a485f413a2113503eed53cd6c53
    10.25781/KAUST-C66VI
    Scopus Count
    Collections
    Biological and Environmental Sciences and Engineering (BESE) Division; Marine Science Program; Theses

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