Identification of purebred Crocodylus siamensis for reintroduction in Vietnam

Fitzsimmons, Nancy Nelson, Buchan, Jason Craig, Lam, Phan Viet, Polet, Gert, Hung, Ton That, Thang, Nguyen Quoc and Gratten, Jacob (2002) Identification of purebred Crocodylus siamensis for reintroduction in Vietnam. Journal of Experimental Zoology, 294 4: 373-381. doi:10.1002/jez.10201

Author Fitzsimmons, Nancy Nelson
Buchan, Jason Craig
Lam, Phan Viet
Polet, Gert
Hung, Ton That
Thang, Nguyen Quoc
Gratten, Jacob
Title Identification of purebred Crocodylus siamensis for reintroduction in Vietnam
Formatted title
Identification of purebred Crocodylus siamensis for reintroduction in Vietnam
Journal name Journal of Experimental Zoology   Check publisher's open access policy
ISSN 0022-104X
Publication date 2002-01-01
Year available 2002
Sub-type Article (original research)
DOI 10.1002/jez.10201
Open Access Status
Volume 294
Issue 4
Start page 373
End page 381
Total pages 9
Place of publication New York
Publisher Wiley-Liss New York
Language eng
Subject C1
300802 Wildlife and Habitat Management
270708 Conservation and Biodiversity
270203 Population and Ecological Genetics
780105 Biological sciences
Formatted abstract
Crocodylus siamensis, the Siamese crocodile, is a critically endangered species of freshwater crocodile previously distributed throughout much of SE Asia. Recovery plans call for reintroductions to the wild using founder individuals currently in captivity, mostly in commercial crocodile farms. On many farms C. siamensis has been intentionally hybridised with either Cuban crocodiles, C. rhombifer, or the estuarine crocodile, C. porosus, and hybrids may be difficult to distinguish morphologically. We report on the combined use of microsatellite and mtDNA genetic markers to determine the species status of potential founder individuals for reintroduction of C. siamensis. Genetic markers were used to characterise 103 captive and wild-caught individuals of C. siamensis, C. rhombifer and C. porosus in Vietnam and to distinguish purebred versus hybrid individuals. Although the microsatellite loci used had some overlap of allele sizes among species, assignment tests allowed differentiation. Four hybrids were identified, two of which had not been recognised morphologically as hybrids, and one of these was thought to be a C. siamensis suitable for reintroduction. Ten of the identified purebred C. siamensis were subsequently released into Cat Tien National Park in southern Vietnam. J. Exp. Zool. (Mol. Dev. Evol.) 294:373–381, 2002. © 2002 Wiley-Liss, Inc.
Keyword Zoology
Gene Flow
Q-Index Code C1
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Agriculture and Food Sciences
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Citation counts: TR Web of Science Citation Count  Cited 38 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 40 times in Scopus Article | Citations
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Created: Wed, 15 Aug 2007, 03:34:49 EST