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Rediscovery of the threatened river sharks, Glyphis garricki and G. glyphis, in Papua New Guinea

Citation

White, WT and Appleyard, SA and Sabub, B and Kyne, PM and Harris, M and Lis, R and Baje, L and Usu, T and Smart, JJ and Corrigan, S and Yang, L and Naylor, GJP, Rediscovery of the threatened river sharks, Glyphis garricki and G. glyphis, in Papua New Guinea, PLoS One, 10, (10) Article e0140075. ISSN 1932-6203 (2015) [Refereed Article]


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Copyright Statement

Copyright: © 2015 White et al. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/

DOI: doi:10.1371/journal.pone.0140075

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.

Item Details

Item Type:Refereed Article
Keywords:river shark, threatened species, Glyphis garricki, Glyphis glyphis, Papua New Guinea
Research Division:Biological Sciences
Research Group:Evolutionary biology
Research Field:Animal systematics and taxonomy
Objective Division:Environmental Management
Objective Group:Other environmental management
Objective Field:Other environmental management not elsewhere classified
UTAS Author:White, WT (Dr William White)
UTAS Author:Appleyard, SA (Dr Sharon Appleyard)
ID Code:118472
Year Published:2015
Web of Science® Times Cited:13
Deposited By:Directorate
Deposited On:2017-07-12
Last Modified:2017-10-17
Downloads:116 View Download Statistics

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