Molecular trees of trypanosomes incongruent with fossil records of hosts
Mem. Inst. Oswaldo Cruz
; 101(1): 25-30, Feb. 2006.
Article
em En
| LILACS
| ID: lil-423563
Biblioteca responsável:
BR1.1
RESUMO
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 trypansosome 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.
Texto completo:
1
Índice:
LILACS
Assunto principal:
Filogenia
/
Trypanosoma
/
Evolução Molecular
/
Fósseis
Limite:
Animals
Idioma:
En
Revista:
Mem. Inst. Oswaldo Cruz
Assunto da revista:
MEDICINA TROPICAL
/
PARASITOLOGIA
Ano de publicação:
2006
Tipo de documento:
Article