| Title | Debating phylogenetic relationships of the scleractinian Psammocora: molecular and morphological evidences |
| Abstract | The phylogenetic relationships of the scleractinian genus Psammocora with the other genera traditionally included in the family Siderastreidae and some Fungiidae are assessed based on combined skeletal and molecular data. R explanulata differs frorn the other examined congeneric species (P contigua, P. digitata, P. nierstraszi, P. profundacella, P. superficialis, and P. stellato) in possessing interstomatous septa between adult corallites, costae, and in having continuous buttress-like structures joining septal faces (i.e., fulturae) which typically occur in fungiids. These characters are shared with Coscinaraea wellsi but not with the remainder of the examined siderastreids (the congeneric C. columna, and Anomastraea irregularis, Horastrea indica, Pseudosiderastrea tayaniai, Siderastrea savignyana) whose septa are interconnected by typical synapticulae. Most of the examined species form septa with distinct transverse groups of centers of calcification, a biomineralization pattern typical of the Robusta clade. The observations on skeletal structures corroborate the results of the 1TS2 and 5.8S molecular phylogeny. C. wellsi and P explanulata are phylogenetically very close to each other and show closer genetic affinity with the examined Fungiidae (Halomitrapileus, Herpolitha limax, Fungia-paumotensis, and Podabacia crustacea) than with the other species in the genera Psammocora and Coscinaraea, or with any other siderastreid. Our results show that neither Psammocora nor Coscinaraea are monophyletic genera. The high genetic distances between the species of Siderastreidae, especially between Pseudosiderastrea tayamai and Siderastrea savignyana on one side and the other genera on the other, suggest a deep divergence in the phylogenetic structure of the family. |
| Source | Contributions to zoology (Print) 76 (1), pp. 35–54 |
| Keywords | PsammocoraSiderastreidaeFungiidaesynapticulaefulturaeITSstatistical parsimony |
| Journal | Contributions to zoology (Print) |
| Editor | SPB Academic Publishing, Amsterdam, Paesi Bassi |
| Year | 2007 |
| Type | Articolo in rivista |
| Authors | Benzoni, Francesca; Stefani, Fabrizio; Stolarski, Jaroslaw; Pichon, Michel; Mitta, Guillaume; Galli, Paolo |
| Text | 307860 2007 ISI Web of Science WOS 000245201500004 Psammocora Siderastreidae Fungiidae synapticulae fulturae ITS statistical parsimony Debating phylogenetic relationships of the scleractinian Psammocora molecular and morphological evidences Benzoni, Francesca; Stefani, Fabrizio; Stolarski, Jaroslaw; Pichon, Michel; Mitta, Guillaume; Galli, Paolo University of Milan; Polish Academy of Science; University of Perpignan Via Domitia; Centre National de la Recherche Scientifique CNRS The phylogenetic relationships of the scleractinian genus Psammocora with the other genera traditionally included in the family Siderastreidae and some Fungiidae are assessed based on combined skeletal and molecular data. R explanulata differs frorn the other examined congeneric species P contigua, P. digitata, P. nierstraszi, P. profundacella, P. superficialis, and P. stellato in possessing interstomatous septa between adult corallites, costae, and in having continuous buttress like structures joining septal faces i.e., fulturae which typically occur in fungiids. These characters are shared with Coscinaraea wellsi but not with the remainder of the examined siderastreids the congeneric C. columna, and Anomastraea irregularis, Horastrea indica, Pseudosiderastrea tayaniai, Siderastrea savignyana whose septa are interconnected by typical synapticulae. Most of the examined species form septa with distinct transverse groups of centers of calcification, a biomineralization pattern typical of the Robusta clade. The observations on skeletal structures corroborate the results of the 1TS2 and 5.8S molecular phylogeny. C. wellsi and P explanulata are phylogenetically very close to each other and show closer genetic affinity with the examined Fungiidae Halomitrapileus, Herpolitha limax, Fungia paumotensis, and Podabacia crustacea than with the other species in the genera Psammocora and Coscinaraea, or with any other siderastreid. Our results show that neither Psammocora nor Coscinaraea are monophyletic genera. The high genetic distances between the species of Siderastreidae, especially between Pseudosiderastrea tayamai and Siderastrea savignyana on one side and the other genera on the other, suggest a deep divergence in the phylogenetic structure of the family. 76 Articolo in rivista SPB Academic Publishing 1383 4517 Contributions to zoology Print Contributions to zoology Print Contrib. zool. Print Contributions to zoology. Print Bijdragen tot de dierkunde Print fabrizio.stefani STEFANI FABRIZIO |
