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The double odyssey of Madagascan polystome flatworms leads to new insights on the origins of their amphibian hosts

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dc.contributor.advisor Vences, Miguel
dc.contributor.author Du Preez, Louis H
dc.contributor.author Verneau, Olivier
dc.contributor.author Laurent, Véronique
dc.contributor.author Raharivololoniaina, Liliane
dc.contributor.author Glaw, Frank
dc.date.accessioned 2010-02-18T06:13:28Z
dc.date.available 2010-02-18T06:13:28Z
dc.date.issued 2009
dc.identifier.citation Verneau, O. & Du Preez, L.H. & Laurent, V. & Raharivololoniaina, L. & Glaw, F. & Vences, M. 2009. The double odyssey of Madagascan polystome flatworms leads to new insights on the origins of their amphibian hosts. Proceedings of the Royal Society B: Biological Sciences, 276(1662): 1575 - 1583,Dec. [http://rspb.royalsocietypublishing.org/] en
dc.identifier.issn 0962-8452 (Online)
dc.identifier.issn 1471-2954
dc.identifier.uri http://hdl.handle.net/10394/2836
dc.description.abstract Polystomatid flatworms are parasites of high host specificity, which mainly infect amphibian hosts. Only one polystome species has so far been recorded from Madagascar despite the high species richness and endemicity of amphibians on this island. Out of the 86 screened Malagasy frog species, we recovered polystomes from 25 in the families Ptychadenidae and Mantellidae. Molecular phylogenetic analysis uncovered an unexpected diversity of polystome species belonging to two separate clades: one forming a lineage within the genus Metapolystoma, with one species in Ptychadena and several species in the mantellid host genera Aglyptodactylus and Boophis; and the second corresponding to an undescribed genus that was found in the species of the subfamily Mantellinae in the family Mantellidae. The phylogenetic position of the undescribed genus along with molecular dating suggests that it may have colonized Madagascar in the Late Mesozoic or Early Cainozoic. By contrast, the more recent origin of Metapolystoma in Madagascar at ca 14–2 Myr ago strongly suggests that the ancestors of Ptychadena mascareniensis colonized Madagascar naturally by overseas dispersal, carrying their Metapolystoma parasites. Our findings provide a striking example of how parasite data can supply novel insights into the biogeographic history of their hosts.
dc.description.uri http://rspb.royalsocietypublishing.org/content/276/1662/1575.full.pdf+html
dc.language.iso en en
dc.publisher Royal Society Publishing en
dc.title The double odyssey of Madagascan polystome flatworms leads to new insights on the origins of their amphibian hosts en
dc.type Article en


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