WoRMS banner

WoRMS RSS feed RSS
Add search provider Add provider
Twitter: Latest updates @WRMarineSpecies

WoRMS source details

NameCárdenas, P.; Rapp, H.T.; Schander, C.; Tendal, O.S. 2010. Molecular taxonomy and phylogeny of the Geodiidae (Porifera, Demospongiae, Astrophorida) - combining phylogenetic and Linnaean classification. Zoologica Scripta 39: 89-106.
Type Publication
AbstractAccording to the fossil records, the Geodiidae represents one of the oldest families of demosponges (Phylum Porifera). There are approximately 220 described extant species, geographically and bathymetrically widely distributed around the world. Species of this family all share a two-layered cortex with ball-shaped spicules called ‘sterrasters’ in the endocortex. However, molecular studies have questioned the monophyly of the group. Moreover, the evolutionary history and the intrafamily relationships of the Geodiidae are not fully resolved. Using a partial sequence of the cytochrome c oxidase subunit 1 (COI) gene and a partial sequence of the 28S rDNA gene (D1–D2 domains), we present the first molecular phylogeny focusing on this group. The congruent results from the two gene fragments suggest that (i) the Geodiidae is monophyletic, (ii) the Erylinae D Geodinae subdivision sensu Sollas, 1888 is valid and that (iii) Isops and Sidonops are junior synonyms of Geodia. The synonymization of Isops and Sidonops implies that the oscule D pore morphology as a diagnostic character should be abandoned. Geodia hentscheli nom. nov. has been given for Geodia mesotriaena (Hentschel, 1929). This study served as the basis for a revised phylogenetic classification of the Geodiidae. Well-supported clades led to the establishment of clade names following the PhyloCode. The Geodinae clade is strongly supported and notably composed of Depressiogeodia, Cydonium and Geodia. A morphological synapomorphy of Geodinaeis the presence of euasters in the ectocortex. The Erylinae (Erylus, Penares, Caminus and Pachymatisma) form a strongly supported monophyletic group with three morphological synapomorphies: (i) loss of anatriaenes and protriaenes, (ii) microrhabds (or spherules) in the ectocortex and (iii) short-shafted triaenes. The Erylus monophyly is ambiguous. Erylus species are distributed in three well-supported clades. Finally, spicule homology in the cortex of the Geodiidae is discussed.
Bibliographical
term
Phylogeny, Phylogenesis
Taxonomic
term
Porifera
Taxa
(8)
Checked: verified by a taxonomic editorCalthropellinae von Lendenfeld, 1907 (basis of record)
Checked: verified by a taxonomic editorDepressiogeodia Cárdenas, Rapp, Schander & Tendal, 2010 (original description)
Checked: verified by a taxonomic editorErylinae Sollas, 1888 (basis of record)
Checked: verified by a taxonomic editorGeodia hentscheli Cárdenas, Rapp, Schander & Tendal, 2010 (original description)
Checked: verified by a taxonomic editorGeodia phlegraei (Sollas, 1880) (new combination reference)
Checked: verified by a taxonomic editorGeodiidae Gray, 1867 (additional source)
Checked: verified by a taxonomic editorGeodiinae Sollas, 1888 (additional source)
Checked: verified by a taxonomic editorPenares Gray, 1867 (additional source)
Distributions
(1)
Arctic for Geodia hentscheli Cárdenas, Rapp, Schander & Tendal, 2010
Edit
history
Date   action   by
2013-01-12 18:30:12Z  created  db_admin
 [Back to search]