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  • A preliminary investigation into the potential value of gastric mills for ageing crustaceans

    Author(s)
    Leland, J.
    Coughran, Jason
    Bucher, D.
    Griffith University Author(s)
    Coughran, Jason
    Year published
    2011
    Metadata
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    Abstract
    A preliminary study was conducted to assess the usefulness of calcified ossicles from the gastric mills of decapod crustaceans for ageing, based on the application of a traditional fisheries biology method for the analysis of concentric growth marks in scales, bones and otoliths. Transverse cross sections of prepyloric, zygocardiac and pyloric ossicles of gastric mills from Cherax quadricarinatus, Euastacus valentulus, Ranina ranina, Scylla serrata and Thenus orientalis showed the presence of alternating translucent and opaque growth rings. Growth ring analysis indicated a growth record in two series, each likely ...
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    A preliminary study was conducted to assess the usefulness of calcified ossicles from the gastric mills of decapod crustaceans for ageing, based on the application of a traditional fisheries biology method for the analysis of concentric growth marks in scales, bones and otoliths. Transverse cross sections of prepyloric, zygocardiac and pyloric ossicles of gastric mills from Cherax quadricarinatus, Euastacus valentulus, Ranina ranina, Scylla serrata and Thenus orientalis showed the presence of alternating translucent and opaque growth rings. Growth ring analysis indicated a growth record in two series, each likely representing different periodicities. Comparisons of growth ring counts showed close agreement between all gastric ossicles examined. Progressive sectioning of zygocardiac ossicles from C. quadricarinatus and S. serrata showed that growth ring counts varied along the length of these structures and demonstrated the need for species-specific assessment of gastric mill components. In conclusion, further empirical research is warranted to validate the periodicity of the gastric ossicle growth record to further elucidate its potential for ageing crustaceans.
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    Journal Title
    Crustaceana Monographs
    Volume
    15
    Publisher URI
    http://www.brill.nl/new-frontiers-crustacean-biology
    Subject
    Invertebrate Biology
    Publication URI
    http://hdl.handle.net/10072/43523
    Collection
    • Journal articles

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