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    Age and growth estimates for the starry smoothhound (Mustelus asterias) in the Northeast Atlantic Ocean

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    Author
    Farrell, E D
    Mariani, S
    Clarke, M W
    Keyword
    Conservation
    elasmobranch
    fisheries management
    Gompertz
    Triakidae
    vertebrae
    von Bertalanffy
    Date
    2010
    Publisher
    Oxford University Press
    
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    Abstract
    This study is the first to estimate age, growth and longevity of M. asterias based on interpretation of band pairs in sectioned vertebrae. Age and growth of 106 male and 114 female starry smooth-hound sharks (Mustelus asterias) were estimated by counting band pairs on unstained sectioned vertebrae. Growth curves were fitted to the length-at-age data using the von Bertalanffy and Gompertz models. The 1-parameter von Bertalanffy-L0 provided the best fit for males (L∞ = 104 cm TL, L0 = 30 cm TL and estimated K = 16 0.224) and females (L∞ = 133 cm TL, L0 = 30 cm TL and estimated K = 0.136). Longevity was estimated to be 11.8 and 20.2 years for males and females respectively. The length weight relationship is also presented for 304 male and 424 female M. asterias. The von Bertalanffy model was fitted to weight-at-age data. These estimates can form the basis of future work on the assessment and management of this species.
    URI
    http://hdl.handle.net/10793/417; http://dx.doi.org/10.1093/icesjms/fsp295
    Description
    This is a pre-copy-editing, author-produced PDF of an article accepted for publication in ICES Journal of Marine Science following peer review. The definitive publisher-authenticated version Farrell, E. D., Mariani, S., and Clarke, M. W. 2010. Age and growth estimates for the starry smoothhound (Mustelus asterias) in the Northeast Atlantic Ocean. – ICES Journal of Marine Science, 67: 931–939 is available online at: http://icesjms.oxfordjournals.org/content/67/5/931
    peer-reviewed
    Citation
    Farrell, E. D., Mariani, S., and Clarke, M. W. 2010. Age and growth estimates for the starry smoothhound (Mustelus asterias) in the Northeast Atlantic Ocean. – ICES Journal of Marine Science, 67: 931–939.
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