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Title: Habitat fragmentation alters the properties of a host-parasite network: Rodents and their helminths in South-East Asia
Authors: Frédéric Bordes
Serge Morand
Shai Pilosof
Julien Claude
Boris R. Krasnov
Jean François Cosson
Yannick Chaval
Alexis Ribas
Kittipong Chaisiri
Kim Blasdell
Vincent Herbreteau
Stéphane Dupuy
Annelise Tran
Institut des Sciences de l'Evolution UMR 5554
Ben-Gurion University of the Negev
Montpellier SupAgro
Rajabhat University
Mahidol University
CSIRO Australian Animal Health Laboratory
Universite des Antilles et de la Guyane
Territoires, Environnement, Teledetection et Information Spatiale
CIRAD Centre de Recherche de Montpellier
Keywords: Agricultural and Biological Sciences
Issue Date: 1-Jan-2015
Citation: Journal of Animal Ecology. Vol.84, No.5 (2015), 1253-1263
Abstract: © 2015 British Ecological Society. While the effects of deforestation and habitat fragmentation on parasite prevalence or richness are well investigated, host-parasite networks are still understudied despite their importance in understanding the mechanisms of these major disturbances. Because fragmentation may negatively impact species occupancy, abundance and co-occurrence, we predict a link between spatiotemporal changes in habitat and the architecture of host-parasite networks. For this, we used an extensive data set on 16 rodent species and 29 helminth species from seven localities of South-East Asia. We analysed the effects of rapid deforestation on connectance and modularity of helminth-parasite networks. We estimated both the degree of fragmentation and the rate of deforestation through the development of land uses and their changes through the last 20 to 30 years in order to take into account the dynamics of habitat fragmentation in our statistical analyses. We found that rapid fragmentation does not affect helminth species richness per se but impacts host-parasite interactions as the rodent-helminth network becomes less connected and more modular. Our results suggest that parasite sharing among host species may become more difficult to maintain with the increase of habitat disturbance.
ISSN: 13652656
Appears in Collections:Scopus 2011-2015

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