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Article
Published: 2017-09-20

A major range extension for Carcharhinus altimus (Springer, 1950) in the South Pacific Ocean

Auckland War Memorial Museum,Private Bag 92018, Victoria Street West, Auckland 1142, New Zealand Department of Conservation, Private Bag 68908, Auckland 1141, New Zealand.
Museum of New Zealand Te Papa Tongarewa, P.O. Box 467, Wellington, New Zealand
Pisces Carcharhinus altimus C. amblyrhynchos Ducie Island distribution pregnant female juvenile

Abstract

The occurrence of the bignose shark Carcharhinus altimus at Ducie Island, Pitcairn Islands is reported for the first time based upon re-identification of four museum voucher specimens. The presence of a pregnant female and a juvenile confirms C. altimus breeds at Ducie Island and should be considered resident there. The specimens had been misidentified as the grey reef shark, C. amblyrhynchos, emphasising the ongoing value of collecting museum voucher specimens of supposedly common species. The occurrence of C. altimus at Ducie Island suggests resident populations of C. altimus are likely to occur throughout the tropical and subtropical Pacific Ocean but may have been overlooked due to their preference for deep demersal habitats during the day, or misidentification as other Carcharhinus species. 

 

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