Microscopic characteristics of the plumulaceous feathers of Australian birds: a preliminary analysis of taxonomic discrimination for forensic purposes

Joannah Lee, Stephen SARRE, Leo Joseph, James ROBERTSON

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    The microscopic characteristics of downy barbules of feathers can assist with species identification in forensic investigations, particularly when only minute fragments remain. Using light microscopy (LM) and scanning electron microscopy (SEM), we characterised the feather morphology of 62 species of birds from 18 Orders including representatives of all Orders found in Australia, except Sphenisciformes (penguins). We demonstrate that with a few notable exceptions, Australian birds display similar feather characteristics to their well-studied Northern hemisphere relatives. We also show that the microscopic characteristics of downy barbules can be used to differentiate these Orders. A more detailed investigation of 39 parrot species revealed substantial similarities among the species, indicating that microscopic characteristics could not differentiate among parrot species. However, there were some features (barbule length and macroscopic features, i.e. colour), that may provide clues as to the species of origin. Importantly, the microscopic feather characteristics provide investigators with a simple, fast and cost effective mechanism with which to test assertions about the potential species of origin. This may preclude the requirement for further more expensive testing (such as DNA analysis) or direct further testing towards a smaller, more targeted number of species, reducing the amount and cost of testing required.
    Original languageEnglish
    Pages (from-to)1-25
    Number of pages25
    JournalAustralian Journal of Forensic Sciences
    Volume48
    Issue number4
    Early online date2015
    DOIs
    Publication statusPublished - 2016

    Fingerprint

    Feathers
    Spheniscidae
    Birds
    Parrots
    Costs and Cost Analysis
    Electron Scanning Microscopy
    Microscopy
    Color
    Research Personnel
    Light
    DNA

    Cite this

    @article{849fb7a60d6341e8b2ccf294ea2e3a2f,
    title = "Microscopic characteristics of the plumulaceous feathers of Australian birds: a preliminary analysis of taxonomic discrimination for forensic purposes",
    abstract = "The microscopic characteristics of downy barbules of feathers can assist with species identification in forensic investigations, particularly when only minute fragments remain. Using light microscopy (LM) and scanning electron microscopy (SEM), we characterised the feather morphology of 62 species of birds from 18 Orders including representatives of all Orders found in Australia, except Sphenisciformes (penguins). We demonstrate that with a few notable exceptions, Australian birds display similar feather characteristics to their well-studied Northern hemisphere relatives. We also show that the microscopic characteristics of downy barbules can be used to differentiate these Orders. A more detailed investigation of 39 parrot species revealed substantial similarities among the species, indicating that microscopic characteristics could not differentiate among parrot species. However, there were some features (barbule length and macroscopic features, i.e. colour), that may provide clues as to the species of origin. Importantly, the microscopic feather characteristics provide investigators with a simple, fast and cost effective mechanism with which to test assertions about the potential species of origin. This may preclude the requirement for further more expensive testing (such as DNA analysis) or direct further testing towards a smaller, more targeted number of species, reducing the amount and cost of testing required.",
    keywords = "feathers, microscopy, barbules, wildlife trade, forensics",
    author = "Joannah Lee and Stephen SARRE and Leo Joseph and James ROBERTSON",
    year = "2016",
    doi = "10.1080/00450618.2015.1076034",
    language = "English",
    volume = "48",
    pages = "1--25",
    journal = "Australian Journal of Forensic Sciences",
    issn = "0045-0618",
    publisher = "Taylor and Francis Ltd.",
    number = "4",

    }

    TY - JOUR

    T1 - Microscopic characteristics of the plumulaceous feathers of Australian birds: a preliminary analysis of taxonomic discrimination for forensic purposes

    AU - Lee, Joannah

    AU - SARRE, Stephen

    AU - Joseph, Leo

    AU - ROBERTSON, James

    PY - 2016

    Y1 - 2016

    N2 - The microscopic characteristics of downy barbules of feathers can assist with species identification in forensic investigations, particularly when only minute fragments remain. Using light microscopy (LM) and scanning electron microscopy (SEM), we characterised the feather morphology of 62 species of birds from 18 Orders including representatives of all Orders found in Australia, except Sphenisciformes (penguins). We demonstrate that with a few notable exceptions, Australian birds display similar feather characteristics to their well-studied Northern hemisphere relatives. We also show that the microscopic characteristics of downy barbules can be used to differentiate these Orders. A more detailed investigation of 39 parrot species revealed substantial similarities among the species, indicating that microscopic characteristics could not differentiate among parrot species. However, there were some features (barbule length and macroscopic features, i.e. colour), that may provide clues as to the species of origin. Importantly, the microscopic feather characteristics provide investigators with a simple, fast and cost effective mechanism with which to test assertions about the potential species of origin. This may preclude the requirement for further more expensive testing (such as DNA analysis) or direct further testing towards a smaller, more targeted number of species, reducing the amount and cost of testing required.

    AB - The microscopic characteristics of downy barbules of feathers can assist with species identification in forensic investigations, particularly when only minute fragments remain. Using light microscopy (LM) and scanning electron microscopy (SEM), we characterised the feather morphology of 62 species of birds from 18 Orders including representatives of all Orders found in Australia, except Sphenisciformes (penguins). We demonstrate that with a few notable exceptions, Australian birds display similar feather characteristics to their well-studied Northern hemisphere relatives. We also show that the microscopic characteristics of downy barbules can be used to differentiate these Orders. A more detailed investigation of 39 parrot species revealed substantial similarities among the species, indicating that microscopic characteristics could not differentiate among parrot species. However, there were some features (barbule length and macroscopic features, i.e. colour), that may provide clues as to the species of origin. Importantly, the microscopic feather characteristics provide investigators with a simple, fast and cost effective mechanism with which to test assertions about the potential species of origin. This may preclude the requirement for further more expensive testing (such as DNA analysis) or direct further testing towards a smaller, more targeted number of species, reducing the amount and cost of testing required.

    KW - feathers

    KW - microscopy

    KW - barbules

    KW - wildlife trade

    KW - forensics

    U2 - 10.1080/00450618.2015.1076034

    DO - 10.1080/00450618.2015.1076034

    M3 - Article

    VL - 48

    SP - 1

    EP - 25

    JO - Australian Journal of Forensic Sciences

    JF - Australian Journal of Forensic Sciences

    SN - 0045-0618

    IS - 4

    ER -