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Morrow, C.; Picton, B.; Erpenbeck, D.; Boury-Esnault, N.; Maggs, C.; Allcock, A. (2012). Congruence between nuclear and mitochondrial genes in Demospongiae: A new hypothesis for relationships within the G4 clade (Porifera: Demospongiae). Molecular Phylogenetics and Evolution. 62(1): 174-190.
154010
10.1016/j.ympev.2011.09.016 [view]
Morrow, C.; Picton, B.; Erpenbeck, D.; Boury-Esnault, N.; Maggs, C.; Allcock, A.
2012
Congruence between nuclear and mitochondrial genes in Demospongiae: A new hypothesis for relationships within the G4 clade (Porifera: Demospongiae)
Molecular Phylogenetics and Evolution
62(1): 174-190
Publication
on line october 2011
Available for editors
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The current morphological classification of the Demospongiae G4 clade was tested using large subunit ribosomal RNA (LSU rRNA) sequences from 119 taxa. Fifty-three mitochondrial cytochrome oxidase 1 (CO1) barcoding sequences were also analysed to test whether the 28S phylogeny could be recovered using an independent gene. This is the largest and most comprehensive study of the Demospongiae G4 clade. The 28S and CO1 genetrees result in congruent clades but conflict with the current morphological classification. The results confirm the polyphyly of Halichondrida, Hadromerida, Dictyonellidae, Axinellidae and Poecilosclerida and show that several of the characters used in morphological classifications are homoplasious. Robust clades are clearly shown and a new hypothesis for relationships of taxa allocated to G4 is proposed.
Phylogeny, Phylogenesis
Axinellida (redescription)
Halichondria bowerbanki Burton, 1930 represented as Halichondria (Halichondria) bowerbanki Burton, 1930 (biology source) Hemimycale columella (Bowerbank, 1874) (biology source) Hymerhabdiidae Morrow, Picton, Erpenbeck, Boury-Esnault, Maggs & Allcock, 2012 (original description) Pachymatisma johnstonia (Bowerbank in Johnston, 1842) (biology source) Stelligera Gray, 1867 (additional source) Stelligera stuposa (Ellis & Solander, 1786) (biology source) Stelligeridae Lendenfeld, 1898 (redescription) Tetractinellida (redescription) |
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