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  • Discrimination of sex in the White-bellied Sea-Eagle, Haliaeetus leucogaster, using genetic and morphometric techniques

    Author(s)
    Shephard, JM
    Catterall, CP
    Hughes, JM
    Griffith University Author(s)
    Catterall, Carla P.
    Hughes, Jane M.
    Shephard, Jill M.
    Year published
    2004
    Metadata
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    Abstract
    The White-bellied Sea-Eagle, Haliaeetus leucogaster, is monomorphic for adult plumage colouration, but in body size displays reversed sexual dimorphism, with female birds significantly larger. Analyses of morphometric data from 37 individuals from Australia and Papua New Guinea revealed a latitudinal cline in body dimensions, with individuals larger in the south. A discriminant function based on 10 morphometric characters was 100% effective in discriminating between 19 males and 18 females that had been sexed using molecular genetic methods. Reclassification using a jackknife procedure correctly identified 92% of individuals. ...
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    The White-bellied Sea-Eagle, Haliaeetus leucogaster, is monomorphic for adult plumage colouration, but in body size displays reversed sexual dimorphism, with female birds significantly larger. Analyses of morphometric data from 37 individuals from Australia and Papua New Guinea revealed a latitudinal cline in body dimensions, with individuals larger in the south. A discriminant function based on 10 morphometric characters was 100% effective in discriminating between 19 males and 18 females that had been sexed using molecular genetic methods. Reclassification using a jackknife procedure correctly identified 92% of individuals. The discriminant function should be a viable alternative to genetic sexing or laparoscopy for a large proportion of individuals within the Australo-Papuan range of this species; and can also be used to identify a small proportion of 'ambiguous' individuals for which reliable sexing will require those other techniques.
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    Journal Title
    Emu
    Volume
    104
    Issue
    1
    DOI
    https://doi.org/10.1071/MU03043
    Subject
    Environmental Science and Management
    Ecology
    Zoology
    Publication URI
    http://hdl.handle.net/10072/5225
    Collection
    • Journal articles

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