Rediscovery of the Threatened River Sharks, Glyphis garricki and G. glyphis, in Papua New Guinea

William White, Sharon Appleyard, Benthly Sabub, Peter Kyne, Mark Harris, Rickson Lis, Leontine Baje, Thomas Usu, Jonathan Smart, Shannon Corrigan, L Yang, Gavin Naylor

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    Abstract

    Recent surveys of the shark and ray catches of artisanal fishers in the Western Province of Papua New Guinea (PNG) resulted in the rediscovery of the threatened river sharks, Glyphis garricki and Glyphis glyphis. These represent the first records of both species in PNG since the 1960s and 1970s and highlight the lack of studies of shark biodiversity in PNG. Two individuals of G. garricki and three individuals of G. glyphis were recorded from coastal marine waters of the Daru region of PNG in October and November 2014. The two G. garricki specimens were small individuals estimated to be 100-105 cm and ?113 cm total length (TL). The three G. glyphis specimens were all mature, one a pregnant female and two adult males. These are the first adults of G. glyphis recorded to date providing a more accurate maximum size for this species, i.e. ?260 cm TL. A single pup which was released from the pregnant female G. glyphis, was estimated to be ?65 cm TL. Anecdotal information from the fishers of pregnant females of G. glyphis containing 6 or 7 pups provides the first estimate of litter size for this species. The jaws of the pregnant female G. glyphis were retained and a detailed description of the dentition is provided, since adult dentition has not been previously documented for this species. Genetic analyses confirmed the two species cluster well within samples from these species collected in northern Australia.
    Original languageEnglish
    Article numbere0140075
    Pages (from-to)1-15
    Number of pages15
    JournalPLoS One
    Volume10
    Issue number10
    DOIs
    Publication statusPublished - 2015

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    Sharks
    Papua New Guinea
    Biodiversity
    sharks
    Rivers
    rivers
    Water
    pups
    teeth
    Permanent Dentition
    Litter Size
    Dentition
    Jaw
    jaws
    litter size
    biodiversity
    sampling

    Cite this

    White, W., Appleyard, S., Sabub, B., Kyne, P., Harris, M., Lis, R., ... Naylor, G. (2015). Rediscovery of the Threatened River Sharks, Glyphis garricki and G. glyphis, in Papua New Guinea. PLoS One, 10(10), 1-15. [e0140075 ]. https://doi.org/10.1371/journal.pone.0140075
    White, William ; Appleyard, Sharon ; Sabub, Benthly ; Kyne, Peter ; Harris, Mark ; Lis, Rickson ; Baje, Leontine ; Usu, Thomas ; Smart, Jonathan ; Corrigan, Shannon ; Yang, L ; Naylor, Gavin. / Rediscovery of the Threatened River Sharks, Glyphis garricki and G. glyphis, in Papua New Guinea. In: PLoS One. 2015 ; Vol. 10, No. 10. pp. 1-15.
    @article{c9ffdc45b53a45eba91108a83582f255,
    title = "Rediscovery of the Threatened River Sharks, Glyphis garricki and G. glyphis, in Papua New Guinea",
    abstract = "Recent surveys of the shark and ray catches of artisanal fishers in the Western Province of Papua New Guinea (PNG) resulted in the rediscovery of the threatened river sharks, Glyphis garricki and Glyphis glyphis. These represent the first records of both species in PNG since the 1960s and 1970s and highlight the lack of studies of shark biodiversity in PNG. Two individuals of G. garricki and three individuals of G. glyphis were recorded from coastal marine waters of the Daru region of PNG in October and November 2014. The two G. garricki specimens were small individuals estimated to be 100-105 cm and ?113 cm total length (TL). The three G. glyphis specimens were all mature, one a pregnant female and two adult males. These are the first adults of G. glyphis recorded to date providing a more accurate maximum size for this species, i.e. ?260 cm TL. A single pup which was released from the pregnant female G. glyphis, was estimated to be ?65 cm TL. Anecdotal information from the fishers of pregnant females of G. glyphis containing 6 or 7 pups provides the first estimate of litter size for this species. The jaws of the pregnant female G. glyphis were retained and a detailed description of the dentition is provided, since adult dentition has not been previously documented for this species. Genetic analyses confirmed the two species cluster well within samples from these species collected in northern Australia.",
    keywords = "adult, Australia, biodiversity, case report, controlled study, female, genetic analysis, human, human tissue, information processing, jaw, litter size, male, Papua New Guinea, river, secondary dentition, shark, species",
    author = "William White and Sharon Appleyard and Benthly Sabub and Peter Kyne and Mark Harris and Rickson Lis and Leontine Baje and Thomas Usu and Jonathan Smart and Shannon Corrigan and L Yang and Gavin Naylor",
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    White, W, Appleyard, S, Sabub, B, Kyne, P, Harris, M, Lis, R, Baje, L, Usu, T, Smart, J, Corrigan, S, Yang, L & Naylor, G 2015, 'Rediscovery of the Threatened River Sharks, Glyphis garricki and G. glyphis, in Papua New Guinea', PLoS One, vol. 10, no. 10, e0140075 , pp. 1-15. https://doi.org/10.1371/journal.pone.0140075

    Rediscovery of the Threatened River Sharks, Glyphis garricki and G. glyphis, in Papua New Guinea. / White, William; Appleyard, Sharon; Sabub, Benthly; Kyne, Peter; Harris, Mark; Lis, Rickson; Baje, Leontine; Usu, Thomas; Smart, Jonathan; Corrigan, Shannon; Yang, L; Naylor, Gavin.

    In: PLoS One, Vol. 10, No. 10, e0140075 , 2015, p. 1-15.

    Research output: Contribution to journalArticleResearchpeer-review

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    AU - Kyne, Peter

    AU - Harris, Mark

    AU - Lis, Rickson

    AU - Baje, Leontine

    AU - Usu, Thomas

    AU - Smart, Jonathan

    AU - Corrigan, Shannon

    AU - Yang, L

    AU - Naylor, Gavin

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    N2 - Recent surveys of the shark and ray catches of artisanal fishers in the Western Province of Papua New Guinea (PNG) resulted in the rediscovery of the threatened river sharks, Glyphis garricki and Glyphis glyphis. These represent the first records of both species in PNG since the 1960s and 1970s and highlight the lack of studies of shark biodiversity in PNG. Two individuals of G. garricki and three individuals of G. glyphis were recorded from coastal marine waters of the Daru region of PNG in October and November 2014. The two G. garricki specimens were small individuals estimated to be 100-105 cm and ?113 cm total length (TL). The three G. glyphis specimens were all mature, one a pregnant female and two adult males. These are the first adults of G. glyphis recorded to date providing a more accurate maximum size for this species, i.e. ?260 cm TL. A single pup which was released from the pregnant female G. glyphis, was estimated to be ?65 cm TL. Anecdotal information from the fishers of pregnant females of G. glyphis containing 6 or 7 pups provides the first estimate of litter size for this species. The jaws of the pregnant female G. glyphis were retained and a detailed description of the dentition is provided, since adult dentition has not been previously documented for this species. Genetic analyses confirmed the two species cluster well within samples from these species collected in northern Australia.

    AB - Recent surveys of the shark and ray catches of artisanal fishers in the Western Province of Papua New Guinea (PNG) resulted in the rediscovery of the threatened river sharks, Glyphis garricki and Glyphis glyphis. These represent the first records of both species in PNG since the 1960s and 1970s and highlight the lack of studies of shark biodiversity in PNG. Two individuals of G. garricki and three individuals of G. glyphis were recorded from coastal marine waters of the Daru region of PNG in October and November 2014. The two G. garricki specimens were small individuals estimated to be 100-105 cm and ?113 cm total length (TL). The three G. glyphis specimens were all mature, one a pregnant female and two adult males. These are the first adults of G. glyphis recorded to date providing a more accurate maximum size for this species, i.e. ?260 cm TL. A single pup which was released from the pregnant female G. glyphis, was estimated to be ?65 cm TL. Anecdotal information from the fishers of pregnant females of G. glyphis containing 6 or 7 pups provides the first estimate of litter size for this species. The jaws of the pregnant female G. glyphis were retained and a detailed description of the dentition is provided, since adult dentition has not been previously documented for this species. Genetic analyses confirmed the two species cluster well within samples from these species collected in northern Australia.

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