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Mitochondrial DNA analyses of the saltwater crocodile (Crocodylus porosus) from the Northern Territory of Australia


Luck, NL and Thomas, KC and Morin-Adeline, VE and Barwick, S and Chong, AY and Carpenter, EL and Wan, L and Willet, CE and Langford-Salisbury, SM and Abdelsayd, M and Ang, RA and Atkinson, SJ and Barcelo, FG and Booth, ME and Bradbury, EJ and Branighan, TL and Brown, J and Castillo, LE and Chandler, ND and Chong, JY and Collits, KJ and Cook, E and Cruz, RE and Farrugia, CA and Fletcher, JL and Fletcher, S and Gamaliel, NS and Gurr, JF and Hallett, NJ and Hargreaves, G and Harris, T and Hollings, S and Hopcroft, R and Johinke, D and Kern, PL and Kiddell, JL and Kilby, KE and Kragic, B and Kwan, JH and Lee, JI and Liang, JM and Lillie, MC and Lui, BC and Luk, SW and Lun, KH and Marshall, KL and Marzec, JA and Masters, KT and Mazurkijevic, LJ and Medlock, J and Meoli, C and Morris, KM and Noh, YH and Okazaki, H and Orourke, TJ and Payne, EM and Powell, DJ and Quinlivan, AR and Reeves, TJ and Robson, K and Robson, KL and Royle, LJ and Stevenson, R and Sellens, T and Sun, Z and Sutton, AL and Swan, A and Tang, JM and Tinker, JE and Tomlinson, SC and Wilkin, T and Wright, AL and Xiao, ST and Yang, J and Yee, C and Jaratlerdsiri, W and Isberg, SR and Miles, L and Higgins, D and Lane, A and Gongora, J, Mitochondrial DNA analyses of the saltwater crocodile (Crocodylus porosus) from the Northern Territory of Australia, Australian Journal of Zoology, 60, (1) pp. 18-25. ISSN 0004-959X (2012) [Refereed Article]

Copyright Statement

Journal compilation copyright CSIRO 2012

DOI: doi:10.1071/ZO12008


The saltwater crocodile is distributed throughout south-east Asia and Australia. In Australia, it is most abundant in the Northern Territory and Queensland, where it is sustainably farmed for its skins and meat. The aim of this study was to elucidate the relationships and genetic structure among saltwater crocodiles from the Northern Territory of Australia using mitochondrial control region sequences from 61 individuals, representing nine river basins and six of unknown origin, as well as published sequences from other regions. Eight mitochondrial control region haplotypes were identified among both published and novel sequences. Three of the haplotypes appear to be restricted to specimens from northern Australia, with a single haplotype being the most widely dispersed across all river basins. Although Analysis of Molecular Variance provides some support for differentiation among river basins, the frequency of shared haplotypes among these geographical units and median-joining network analysis do not support a clear genetic structure or phylogeographic pattern for saltwater crocodiles in the Northern Territory. The results of this study will assist in furthering our understanding of the genetic diversity of wild saltwater crocodile populations used for ranching in the Northern Territory, as well as providing a framework for assessing the origin of unknown specimens in the future.

Item Details

Item Type:Refereed Article
Keywords:mtDNA, control region, phylogeny, saltwater crocodiles, population genetics
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Animal production
Research Field:Environmental studies in animal production
Objective Division:Animal Production and Animal Primary Products
Objective Group:Livestock raising
Objective Field:Minor livestock (e.g. alpacas, ostriches, crocodiles, farmed rabbits)
UTAS Author:Fletcher, JL (Dr Jessica Fletcher)
ID Code:147210
Year Published:2012
Web of Science® Times Cited:5
Deposited By:Menzies Institute for Medical Research
Deposited On:2021-10-19
Last Modified:2022-04-14

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