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dc.contributor.authorSalas, Carmen
dc.contributor.authorCheca, Antonio
dc.contributor.authorVendrasco, Michael
dc.date.accessioned2016-10-14T10:55:25Z
dc.date.available2016-10-14T10:55:25Z
dc.date.created2016
dc.date.issued2016
dc.identifier.citationSalas C, Checa A and Vendrasco M (2016). The sensorial function of the girdle of the Polyplacophora. Front. Mar. Sci. Conference Abstract: XIX Iberian Symposium on Marine Biology Studies. doi: 10.3389/conf.FMARS.2016.05.00150es_ES
dc.identifier.urihttp://hdl.handle.net/10630/12226
dc.description.abstractThe sensorial function of the girdle of the Polyplacophora Carmen Salas1, Antonio G. Checa2,3, Michael J. Vendrasco2 1Depto. Biología Animal, Facultad de Ciencias, Universidad de Málaga, 29071 Málaga, Spain; 2Departamento de Estratigrafía y Paleontología, Universidad de Granada, 18071 Granada, Spain, 3Instituto Andaluz de Ciencias de la Tierra, CSIC-Universidad de Granada, 18100 Armilla, Spain. The polyplacophorans or chitons are characterized by the presence of eight dorsal overlapping shell plates that are embedded in a thick mantle tissue and surrounded by the girdle (also called perinotum). In chitons, the hard layers of plates consist of the uppermost tegmentum, the articulamentum whose projections form the sutural laminae and insertion plates, and the underlying hypostracum. The tegmentum, which is the visible layer of the chiton shell in life, is infiltrated with a complex, tissue-filled canal system that opens at the dorsal valve surface as sensory or secretory organs known as aesthetes. Structures secreted by the epidermis of the girdle have been mainly described as ornamentation or armature, such as numerous calcareous spines, scales, hairs or bristles, but other studies suggest that the girdle epidermis has other functions such as sensorial (Leise and Cloney, 1982; Leise, 1988). In chitons, epidermal sensory receptors have been mainly found around the mouth, on the subradular organ, in the buccal cavity, in the pallial grooves and in the shell. During a study of the formation of the cuticle in the mantle girdle of several species of chitons (Lepidozona pectinulata, Ischnochiton rissoi, Lepidochitona cinerea, Leptochiton algesirensis, Lepidopleurus cajetanus), we have observed several sensory structures in the mantle girdle. In the case of fully-grown scales and marginal spines, a group of cells differentiated from the papilla constitutes a stalked body or nodule, which progressively elevates and pushes the spine until it finally, pierces through the cuticle surface. The stalked nodules are more conspicuous in L. cinerea and L. pectinulata than in L. cajetanus. These projections arise from epidermal papillae and have been considered mechanoreceptors. Lens-like structures have been observed inside some stalked nodules in L. cinerea and L. algesirensis. The stalked nodules show dendritic structures underlying the lens-like structure, which point to a photoreception ability. The lens-like structure found in the nodule of L. cinerea seems to be a rigid, possibly mineralized structure. Aragonite lenses have been found in Acanthopleura granulata by Speiser et al. (2011). In L. algesirensis we have observed groups of long microvilli in the top margin of the papillae and in contact with the spines that we consider as mechanoreceptors. As in other chitons, dendritic processes are frequently found in association mainly with dorsal spicules, although not every spine is innervated.es_ES
dc.description.sponsorshipUniversidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.es_ES
dc.language.isoenges_ES
dc.publisherFrontierses_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.subjectQuitoneses_ES
dc.subject.otherChitonses_ES
dc.subject.otherCuticlees_ES
dc.subject.otherStalked noduleses_ES
dc.subject.otherLenses_ES
dc.titleThe sensorial function of the girdle of the Polyplacophoraes_ES
dc.typeinfo:eu-repo/semantics/conferenceObjectes_ES
dc.centroFacultad de Cienciases_ES
dc.relation.eventtitleXIX Iberian Symposium on Marine Biology Studies,es_ES
dc.relation.eventplaceOportoes_ES
dc.relation.eventdate5 septiembre de 2016es_ES
dc.cclicenseby-nc-ndes_ES


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