When is an aster not an aster? A new deep-sea Discorhabdella (Demospongiae, Poecilosclerida) with asters, from the Mozambique Channel
| Type | Article | ||||||||
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| Date | 2018-08 | ||||||||
| Language | English | ||||||||
| Author(s) | Vacelet Jean1, Cardenas Paco 1, 2 |
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| Affiliation(s) | 1 : Aix Marseille Univ, Univ Avignon, CNRS, Stn Marine Endoume,IMBE,IRD, F-13007 Marseille, France. 2 : Uppsala Univ, Dept Med Chem, Pharmacognosy, S-75123 Uppsala, Sweden. |
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| Source | Zootaxa (1175-5326) (Magnolia Press), 2018-08 , Vol. 4466 , N. 1 , P. 197-204 | ||||||||
| DOI | 10.11646/zootaxa.4466.1.15 | ||||||||
| WOS© Times Cited | 2 | ||||||||
| Keyword(s) | Porifera, new species, Madagascar, bathyal, homoplasy | ||||||||
| Abstract | Discorhabdella pseudaster n. sp. is an incrusting sponge from the upper bathyal zone of the 'Banc du Geyser', north of Madagascar, Mozambique Channel This new species is described only from a single specimen but it is remarkable by the presence of spicules similar to euasters, a type of microsclere unknown in Poecilosclerida. These spicules are in fact a new example of homoplasy, being derivatives of the typical Discorhabdella pseudoastrose acanthostyles, which are here reduced to the aster-like tyles. The isochelae with a large lamella on the shaft are also quite unique in Poeciloclerida. |
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