Universität zu Köln

Gewiss, Laurenz Rafael, Ngo, Hai Ngoc ORCID: 0000-0001-5471-965X, van Schingen-Khan, Mona, Bernardes, Marta, Rauhaus, Anna, Pham, Cuong The, Nguyen, Truong Quang and Ziegler, Thomas (2020). Population assessment and impact of trade on the Asian Water Dragon (Physignathus cocincinus Cuvier, 1829) in Vietnam. Glob. Ecol. Conserv., 23. AMSTERDAM: ELSEVIER. ISSN 2351-9894

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Abstract

Physignathus cocincinus has been harvested in Vietnam for the local food market as well as for the international pet trade since at least 20 years. However, comprehensive knowledge about its global conservation status is lacking so far. Our study was conducted to evaluate potential impacts of harvest and trade on wild populations by providing an overview of the international and domestic trade in P. cocincinus in Vietnam. To assess the level of anthropogenic impacts on wild populations, we compared population densities and sizes of an undisturbed and several disturbed sites in northern Vietnam between 2014 and 2016 by using a mark-recapture method. The results indicate that mean densities are smaller in disturbed populations than in the reference population. Imports of 1.47 million individuals, mainly of wild origin from Vietnam, into the EU and US were documented in the last 20 years. Regarding national pet trade, a total of 51 domestic dealers and nine online pet shops trading P. cocincinus were documented in Vietnam since 2015. Our study also highlights a considerable harvest for the national use, viz. pet trade and food consumption, in Asian range states. We assume that the long-term viability of P. cocincinus in the Indo-China region, at least in the North of Vietnam, is at risk due to the considerable extent of harvest and ongoing habitat degradation. Thus, we suggest stringent conservation measures to protect wild populations more efficiently and improve habitat conservation. (C) 2020 The Authors. Published by Elsevier B.V.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Gewiss, Laurenz Rafael UNSPECIFIED UNSPECIFIED UNSPECIFIED Ngo, Hai Ngoc UNSPECIFIED orcid.org/0000-0001-5471-965X UNSPECIFIED van Schingen-Khan, Mona UNSPECIFIED UNSPECIFIED UNSPECIFIED Bernardes, Marta UNSPECIFIED UNSPECIFIED UNSPECIFIED Rauhaus, Anna UNSPECIFIED UNSPECIFIED UNSPECIFIED Pham, Cuong The UNSPECIFIED UNSPECIFIED UNSPECIFIED Nguyen, Truong Quang UNSPECIFIED UNSPECIFIED UNSPECIFIED Ziegler, Thomas UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-321617
DOI:	10.1016/j.gecco.2020.e01193
Journal or Publication Title:	Glob. Ecol. Conserv.
Volume:	23
Date:	2020
Publisher:	ELSEVIER
Place of Publication:	AMSTERDAM
ISSN:	2351-9894
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language REPTILES; AMPHIBIANS; DYNAMICS; TRENDS; CHINA; LIST Multiple languages Biodiversity Conservation; Ecology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/32161