PMID: 16612509Apr 14, 2006Paper

Molecular trees of trypanosomes incongruent with fossil records of hosts

Memórias do Instituto Oswaldo Cruz
S F Kerr

Abstract

Molecular trees of trypanosomes have confirmed conventionally accepted genera, but often produce topologies that are incongruent with knowledge of the evolution, systematics, and biogeography of hosts and vectors. These distorted topologies result largely from incorrect assumptions about molecular clocks. A host-based phylogenetic tree could serve as a broad outline against which the reasonability of molecular phylogenies could be evaluated. The host-based tree of trypanosomes presented here supports the " invertebrate first " hypothesis of trypanosome evolution, supports the monophyly of Trypanosomatidae, and indicates the digenetic lifestyle arose three times. An area cladogram of Leishmania supports origination in the Palaearctic during the Palaeocene.

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Citations

Jul 20, 2011·Parasitology·Emma CarmeloBasilio Valladares
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Jun 10, 2017·Parasites & Vectors·Alexa KauferJoel Barratt

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