Anatomical description of a sample of Scalenostoma subulatum collected in Trindade Island, at middle Atlantic Ocean, as base for future revaluation of a wide-ranged species (Caenogastropoda, Eulimidae)
Simone, L.R.L. (2015). Anatomical description of a sample of Scalenostoma subulatum collected in Trindade Island, at middle Atlantic Ocean, as base for future revaluation of a wide-ranged species (Caenogastropoda, Eulimidae). Novapex (Jodoigne) 16(1)(Incorrect volume "15(1)" on title page): 17-24
In: Novapex (Jodoigne). Société Belge de Malacologie: Bruxelles. ISSN 1375-7474, more
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| Keywords |
Biology > Anatomy
Classification > Taxonomy
Eulimidae R. A. Philippi, 1853 [WoRMS]; Scalenostoma subulatum (Broderip, 1832) [WoRMS]
Brazil [Marine Regions]
Marine/Coastal |
| Author keywords |
Scalenostoma subulatum; Wide-ranged distribution |
| Abstract |
Specimens identified as Scalenostoma subulatum were collected in Trindade Island, a remote Brazilian oceanic island at middle Atlantic Ocean. As the species is supposedly circumtropical, worldwide, as long as it is poorly known, a deep description of this sample is here performed, in order to allow further comparison with specimens from other distant geographic regions and oceans; since it is possible that several, similar-shelled species exist. The anatomical analysis of the samples revealed that this population is dioic, with intermediate level of simplification for parasitism. It lacks radular apparatus, intestine and anus, but has a welldeveloped acrembolic proboscis, long and narrow esophagus which ends branching into digestive gland. The remaining systems have expected characters for a caenogastropod, but the genital male ducts, pallial oviduct and nerve ring are relatively simple. The foot has three distinct regions, with a large and single anterior pedal gland opening at propodium tip. |
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