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The first internal molecular phylogeny of the animal phylum Entoprocta.

Artikel i vetenskaplig tidskrift
Författare Judith Fuchs
T Iseto
M Hirose
Per Sundberg
Matthias Obst
Publicerad i Molecular Phylogenetics and Evolution
Volym 56
Nummer/häfte 1
Sidor 370-379
ISSN 1055-7903
Publiceringsår 2010
Publicerad vid Zoologiska institutionen
Zoologiska institutionen, zoomorfologi
Sidor 370-379
Språk en
Länkar dx.doi.org/10.1016/j.ympev.2010.04....
Ämneskategorier Biologiska vetenskaper


This article provides the first molecular phylogenetic study of the enigmatic invertebrate phylum Entoprocta and was designed to resolve the internal phylogenetic relationships of the taxon. The study is based on partial and combined analyses of the mitochondrial gene cytochrome c oxidase subunit I (COI), as well as the nuclear ribosomal genes 28S rDNA and 18S rDNA. A short morphological character matrix was constructed to trace character evolution along the combined molecular phylogenetic tree. The combined analyses of all three genes strongly support the monophyly of the phylum Entoprocta and a sister group relationship of Entoprocta and Cycliophora, a result which is consistent with a number of previous morphological and molecular assessments. We find evidence for two separate lineages within the Entoprocta, one lineage leading to all recent colonial taxa, Coloniales, another representing the clade of solitary entoprocts, Solitaria. Our study suggests that Loxosomella is a paraphyletic assembly with regard to the genera Loxomitra, Loxosoma, and Loxocorone. The results imply that the ancestral entoproct was a solitary, marine organism with an epizoic life style. The groundplan of the entoproct adult stage probably included a bilobed centralized nervous system, and the larva was assumedly planktonic, with a gut and a ciliated creeping sole.

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