Phylogeny of Annelida (Lophotrochozoa): total-evidence analysis of morphology and six genes.

ABSTRACT:

Background

Annelida is one of the major protostome phyla, whose deep phylogeny is very poorly understood. Recent molecular phylogenies show that Annelida may include groups once considered separate phyla (Pogonophora, Echiurida, and Sipunculida) and that Clitellata are derived polychaetes. SThe "total-evidence" analyses combining morphological and molecular characters have been published for a few annelid taxa. No attempt has yet been made to analyse simultaneously morphological and molecular information concerning the Annelida as a whole.

Results

Phylogenetic relationships within Annelida were analysed on the basis of 93 morphological characters and sequences of six genes (18S, 28S, and 16S rRNA, EF1alpha, H3, COI), altogether, 87 terminals of all annelid "families" and 3,9

SUBMITTER: Zrzavy J 

PROVIDER: S-EPMC2732625 | biostudies-literature | 2009 Aug

REPOSITORIES: biostudies-literature