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Mitochondrial Cytochrome oxidase 1 phylogeny supports alternative taxonomic scheme for the marine Haplosclerida
Raleigh, J.; Redmond, N.E.; Delahan, E.; Torpey, S.; Van Soest, R.W.M.; Kelly, M.; McCormack, G.P. (2007). Mitochondrial Cytochrome oxidase 1 phylogeny supports alternative taxonomic scheme for the marine Haplosclerida. J. Mar. Biol. Ass. U.K. Spec. Issue 87(6): 1577-1584. dx.doi.org/10.1017/S0025315407058341
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154; e-ISSN 1469-7769, meer
Peer reviewed article  

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Auteurs  Top 
  • Raleigh, J.
  • Redmond, N.E.
  • Delahan, E.
  • Torpey, S.
  • Van Soest, R.W.M., meer
  • Kelly, M.
  • McCormack, G.P.

Abstract
    Recent molecular studies have shown that the sponge order Haploslcerida is polyphyletic as the freshwater sponges appear to be more closely related to other demosponges than they are to the marine haplosclerids. Within the marine haplosclerid clade relationships viewed via 18S and 28S rRNA gene phylogenies suggest that the suborders and many families and genera are also polyphyletic. However, both of these genes are on the same locus and do not evolve completely independently. We have analysed mitochondrial Cytochrome oxidase 1 gene fragments from 44 species of marine Haplosclerida and show conclusively that the classification of this group needs complete revision. Molecular data show a very complicated phylogeny supporting very few morphological hypotheses and little geographical pattern. However, the molecular data contain a great deal of phylogenetic signal at many taxonomic levels and support phylogenies drawn from the other genes.

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