Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-04-26T20:27:57Z No. of bitstreams: 1 MarlonDelgadoMelo_DISSERT.pdf: 57317504 bytes, checksum: bc0c674bf921e5980bfc858a437e34c0 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-04-29T21:49:52Z (GMT) No. of bitstreams: 1 MarlonDelgadoMelo_DISSERT.pdf: 57317504 bytes, checksum: bc0c674bf921e5980bfc858a437e34c0 (MD5) / Made available in DSpace on 2016-04-29T21:49:52Z (GMT). No. of bitstreams: 1 MarlonDelgadoMelo_DISSERT.pdf: 57317504 bytes, checksum: bc0c674bf921e5980bfc858a437e34c0 (MD5) Previous issue date: 2015-05-29 / A taxonomia ? a base de qualquer ci?ncia que envolva biodiversidade, como a ecologia e biogeografia. Entre os invertebrados marinhos, os moluscos gastr?podes s?o um dos grupos mais diversos. O grupo ?Opistobranchia? apresentam redu??o, internaliza??o ou aus?ncia da concha calc?ria, e apresenta tamb?m a maior diversidade de formas entre os gastr?podes. Estima-se que existam entre 5000 e 6000 esp?cies em todo globo terrestre, dentre estas, aproximadamente 235 s?o reportadas para o Brasil, com apenas 12 registradas para o estado do Rio Grande do Norte. O presente projeto visa o levantamento taxon?mico dos opistobr?nquios no litoral do estado do Rio Grande do Norte, Brasil. Para isto foram realizadas expedi??es ?s praias do litoral deste estado. Alguns opistobr?nquios foram coletados diretamente no campo, enquanto outros foram separados em laborat?rio de substratos coletados (i.e., macroalgas, cascalho e pequenas rochas soltas). As coletas se deram manualmente sobre os arrecifes na regi?o entre-mar?s, ou atrav?s de mergulhos livres e aut?nomos (sublitoral). As esp?cies encontradas foram medidas e fotografadas in vivo no Laborat?rio Did?tico II do Departamento de Bot?nica, Ecologia e Zoologia da UFRN. A identifica??o dos esp?cimes foi feita atrav?s da compara??o dos caracteres diagn?sticos de cada grupo, embasada na literatura espec?fica. Foram encontrados 34 novos registros para o litoral do RN, dentre estes, quatro novos registros tamb?m para o nordeste, assim como tr?s novas ocorr?ncias para o Brasil e Atl?ntico Sul. O presente levantamento contribuiu, portanto, para uma melhor estimativa da fauna de opistobr?nquios do litoral norte rio-grandense. Acredita-se que s?o necess?rios mais estudos que envolvam diferentes aspectos ecol?gicos, biol?gicos e biogeogr?ficos dos opistobr?nquios no Brasil e especialmente no Nordeste. / The taxonomy is the foundation of any science involving biodiversity, such as ecology and biogeography. Among marine invertebrates, mollusks gastropods are among the most diverse groups. The subgroup ?Opisthobranchia? have a reduction, or absence internalization of calcareous shell and also has the highest diversity of forms of gastropods. It is estimated that there are between 5000 and 6000 species around the globe, among these, are reported to approximately 235 Brazil, with only 12 recorded for the state of Rio Grande do Norte. This project aims to taxonomic survey of opistobr?nquios the coast of Rio Grande do Norte, Brazil. For this were carried out expeditions to the coastal beaches of this state. Some opistobr?nquios were collected directly in the field, while others were separated in laboratory collected substrates (ie, macroalgae, gravel and small loose rocks). The collections are given manually on the reefs in the region intertidal, or through free and scuba diving (sublitoral). The species found were measured and photographed in vivo in laboratory Didactic II of the Department of Botany, Ecology and Zoology at UFRN. The identification of specimens was made by comparing the diagnostic characters of each group, based on the literature. 34 new records for the coast of the infants were found, among them, four new records as well to the northeast, as well as three new records for Brazil and the Southern Atlantic. This survey contributed thus to a better estimate of opistobr?nquios fauna of North coast Rio Grande. It is believed that more studies are needed involving different ecological, biological and biogeographical aspects of opistobr?nquios in Brazil and especially in the Northeast.