| Revista: | Anais da Academia Brasileira de Ciencias |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000420576 |
| ISSN: | 0001-3765 |
| Autores: | Rangel, Bianca S1 Wosnick, Natascha3 Amorim, Alberto F4 Junior, Jose Roberto K2 Rici, Rose E.G2 |
| Instituciones: | 1Universidade de Sao Paulo, Instituto de Biociencias, Sao Paulo. Brasil 2Universidade de Sao Paulo, Faculdade de Medicina Veterinaria e Zootecnia, Sao Paulo. Brasil 3Universidade Federal do Parana, Centro Politecnico, Curitiba, Parana. Brasil 4Secretaria de Agricultura e Abastecimento do Estado de Sao Paulo, Agencia Paulista de Tecnologia dos Agronegocios, Santos, Sao Paulo. Brasil |
| Año: | 2018 |
| Periodo: | Mar |
| Volumen: | 90 |
| Número: | 1 |
| Paginación: | 31-40 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico, descriptivo |
| Resumen en inglés | The electrosensory system on elasmobranchs consists of subcutaneous electroreceptor organs known as ampullae of Lorenzini. The present study investigated the ampullae of Lorenzini morphology of the lesser guitarfish Zapteryx brevirostris, using light microscopy and scanning electron microscopy. The pore number found in the ventral skin surface is much higher than that found in the dorsal portion, characteristic of species that inhabit the euphotic zone. Under light microscopy it was possible to observe that the wall canal consists of a single layer of squamous epithelial cells. The canal features distal expansion, where the ampullae are located with up to six alveoli. The sensory epithelium of ampullae is composed by cubic cells, with oval nucleus, restricted to the interior of the alveoli. With analysis the clusters under scanning electron microscopy, it was possible to observe the structure and the random arrangement of individual ampullae, canals and nerves. The distribution of dorsal and ventral pores and ampullae in Z. brevirostris resembled those of the same family. The number of alveoli per ampullae was similar to that found in euryhaline elasmobranchs species, suggesting that the morphological organization in Z. brevirostris is linked to its possible evolutionary transitory position among batoids |
| Disciplinas: | Biología |
| Palabras clave: | Peces, Anatomía e histología, Peces marinos, Organos electrorreceptores, Ampulas de Lorenzini, Microscopía electrónica de barrido, Elasmobranchii |
| Keyword: | Fish, Anatomy and histology, Marine fish, Electroreceptors organs, Lorenzini ampullae, Scanning electron microscopy, Elasmobranchii |
| Texto completo: | Texto completo (Ver HTML) |
