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Rediscovery and redescription of the smoothtooth blacktip shark, Carcharhinus leiodon (Carcharhinidae), from Kuwait, with notes on its possible conservation status

Citation

Moore, ABM and White, WT and Ward, RD and Naylor, GJP and Peirce, R, Rediscovery and redescription of the smoothtooth blacktip shark, Carcharhinus leiodon (Carcharhinidae), from Kuwait, with notes on its possible conservation status, Marine & Freshwater Research, June 2010, Cairns, Queensland, Australia, pp. 518-527. ISSN 1323-1650 (2011) [Refereed Conference Paper]


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Copyright Statement

Copyright 2011 CSIRO. Copyright 2011 CSIRO. Licensed under Creative Commons Attribution-NonCommercial-NoDerivitives 4.0 License (CC-BY-NC-ND) http://creativecommons.org/licenses/by-nc-nd/4.0/deed.en_US

DOI: doi:10.1071/MF10159

Abstract

The smoothtooth blacktip shark, Carcharhinus leiodon, is one of the rarest whaler shark species of the genus Carcharhinus, previously known only from the holotype collected over 100 years ago from the Arabian Sea coast of Yemen. Recent market surveys in the Persian (Arabian) Gulf rediscovered 25 specimens (∼2% of individual sharks recorded) in Kuwait, ∼3000km away from the type location. This study combined morphometric and molecular approaches to provide a detailed redescription of this species based on new material, as well as the first information on fresh colouration, size range and maturity. Sequences from two separate regions of the mitochondrial genome (COI and ND2) support the identity of C. leiodon as a distinct species, closely related to C. limbatus, C. amblyrhynchoides and C. tilstoni. Carcharhinus leiodon is superficially similar to, but clearly distinct from, C. melanopterus and C. amblyrhynchoides. The previously uncertain type locality of C. leiodon is considered to be correct, and the narrow range and unusual disjunct distribution, relatively rare for a marine carcharhinid, is discussed. The Kuwait population of C. leiodon, including juveniles, is subject to fisheries by-catch and is in an area of extensive habitat alteration. As a result, C. leiodon is considered vulnerable, requiring urgent conservation action.

Item Details

Item Type:Refereed Conference Paper
Keywords:chondrichthyes, research priorities, sustainable use
Research Division:Environmental Sciences
Research Group:Environmental Science and Management
Research Field:Conservation and Biodiversity
Objective Division:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Flora, Fauna and Biodiversity of environments not elsewhere classified
Author:White, WT (Dr William White)
ID Code:119791
Year Published:2011
Web of Science® Times Cited:69
Deposited By:Centre for Ecology and Biodiversity
Deposited On:2017-08-04
Last Modified:2017-09-21
Downloads:1 View Download Statistics

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