Molecular phylogeny of beetle associated diplogastrid nematodes suggests host switching rather than nematode-beetle coevolution |
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Authors: | Werner E Mayer Matthias Herrmann and Ralf J Sommer |
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Institution: | (1) Department of Evolutionary Biology, Max Planck Institute for Developmental Biology, Spemannstr. 37, 72076 T?bingen, Germany |
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Abstract: | Background Nematodes are putatively the most species-rich animal phylum. They have various life styles and occur in a variety of habitats,
ranging from free-living nematodes in aquatic or terrestrial environments to parasites of animals and plants. The rhabditid
nematode Caenorhabditis elegans is one of the most important model organisms in modern biology. Pristionchus pacificus of the family of the Diplogastridae has been developed as a satellite model for comparison to C. elegans. The Diplogastridae, a monophyletic clade within the rhabditid nematodes, are frequently associated with beetles. How this
beetle-association evolved and whether beetle-nematode coevolution occurred is still elusive. As a prerequisite to answering
this question a robust phylogeny of beetle-associated Diplogastridae is needed. |
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