La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Changes in population abundance, reproduction and habitat use of the rice-field rat, Rattus argentiventer, in relation to rice-crop growth stage in a lowland rice agroecosystem in Vietnam
Auteurs :	Nguyen Thi My Phung, Auteur ; Peter R. Brown, Auteur ; Luke K.-P. Leung, Auteur
Type de document :	Article
Dans :	Wildlife Research (39(3) 2012)
Article en page(s) :	250-257
Langues:	Anglais
Résumé :	Context. Rice-field rodent pests cause substantial economic losses in Asia. In Vietnam, the rice-field rat (Rattus argentiventer) causes 5-10% annual pre-harvest loss in rice yield. A sound ecological knowledge of this species would be useful for developing strategies for managing this pest. Aims. We tested the hypotheses that there would be changes in the population abundance, breeding performance and habitat use of R. argentiventer in response to rice-crop growth stage. Methods. Capture-mark-recapture and kill trapping and spool-and-line tracking were used to assess population abundance, breeding and habitat use in different rice-bank habitats, at 3-5-week intervals, through a 2-month flooding period and a rice cropping season. The study was conducted between October 2008 and April 2009 in An Giang Province in The Mekong Delta, Vietnam. Key results. The population abundance of R. argentiventer was significantly related to rice-crop growth stage and rice-bank habitat. More rats were captured after harvest (P

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