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NameDohrmann, M.; Göcke, C.G.; Janussen, D.; Reitner, J.; Lüter, C.; Wörheide, G. 2011. Systematics and spicule evolution in dictyonal sponges (Hexactinellida: Sceptrulophora) with description of two new species. Zoological Journal of the Linnean Society 163: 1003-1025.
Type Publication
Full textAvailable for editors  PDF available [request]
AbstractIn this paper we report on recently collected specimens of glass sponges belonging to Farreidae Gray, 1872, and Tretodictyidae Schulze, 1886 (Porifera: Hexactinellida: Hexactinosida). All specimens represent new geographical records for their genera: Coral Sea for Aspidoscopulia Reiswig, 2002 (Farreidae) and Psilocalyx Ijima, 1927 (Tretodictyidae); north-west Atlantic for Sarostegia Topsent, 1904 (Farreidae). Two new species, Aspidoscopulia australia Dohrmann, Göcke & Janussen sp. nov. and Aspidoscopulia ospreya Dohrmann, Göcke & Janussen sp. nov., are described. To investigate further the evolution of hexactinosidan sponges, we sequenced two nuclear (18S and 28S rDNA) and two mitochondrial [16S ribosomal rDNA, cytochrome oxidase subunit I (COI)] genes from these specimens, as well as from a recently described new species of Lonchiphora Ijima, 1927 (Farreidae). Besides corroborating the monophyly of Tretodictyidae, our molecular phylogenetic analyses support a clade of clavule-bearing sponges with a farreoid dictyonal framework (i.e. Farreidae sensu stricto). In contrast, Sarostegia, which lacks these features, appears unrelated to this clade – instead our data are consistent with an earlier placement of this genus in Euretidae Zittel, 1877.We introduce formally the taxon Sceptrulophora Mehl 1992, and emend the classification of Hexactinosida to reflect this move and our new findings regarding the position of Sarostegia. Finally, we discuss implications of the molecular phylogeny for the evolution of sceptrules, the defining autapomorphy of Sceptrulophora.
Bibliographical
term
Systematics, Taxonomy
Taxonomic
term
Porifera
Taxa
(11)
Checked: verified by a taxonomic editorAspidoscopulia australia Dohrmann, Göcke & Janussen, 2011 (original description)
Checked: verified by a taxonomic editorAspidoscopulia ospreya Dohrmann, Göcke & Janussen, 2011 (original description)
Checked: verified by a taxonomic editorClaviscopulia facunda (Schmidt, 1870) (additional source)
Checked: verified by a taxonomic editorEuretidae Zittel, 1877 (additional source)
Checked: verified by a taxonomic editorFarreidae Gray, 1872 (additional source)
Checked: verified by a taxonomic editorFieldingida accepted as Checked: verified by a taxonomic editorSceptrulophora (source of synonymy)
Checked: verified by a taxonomic editorHexactinosida (additional source)
Checked: verified by a taxonomic editorPsilocalyx wilsoni Ijima, 1927 (additional source)
Checked: verified by a taxonomic editorSarostegia Topsent, 1904 (additional source)
Checked: verified by a taxonomic editorSarostegia oculata Topsent, 1904 (additional source)
Checked: verified by a taxonomic editorSceptrulophora (basis of record)
Distributions
(7)
Australian Exclusive Economic Zone for Aspidoscopulia australia Dohrmann, Göcke & Janussen, 2011
Australian Exclusive Economic Zone for Aspidoscopulia ospreya Dohrmann, Göcke & Janussen, 2011
Australian Exclusive Economic Zone for Psilocalyx wilsoni Ijima, 1927
Bahamian for Sarostegia oculata Topsent, 1904
Coral Sea for Aspidoscopulia australia Dohrmann, Göcke & Janussen, 2011
Coral Sea for Aspidoscopulia ospreya Dohrmann, Göcke & Janussen, 2011
Coral Sea for Psilocalyx wilsoni Ijima, 1927
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2013-01-12 18:30:12Z  created  db_admin
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