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Previous issue date: 2017-03-30 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / O extenso litoral brasileiro ? multipartido em diferentes ecossistemas, compostos por estu?rios, manguezais, sistemas recifais, ilhas costeiras e oce?nicas. Estes ambientes possuem uma ictiofauna bastante diversificada composta por 1.297 esp?cies, das quais aproximadamente 25% representam esp?cies end?micas. Esses n?veis de biodiversidade podem ser incertos, devido a ocorr?ncia de esp?cies cr?pticas e polit?picas e pela aus?ncia de estudos populacionais, sobretudo em esp?cies recifais. Neste sentido, foram analisados aspectos populacionais, taxon?micos e filogen?ticos de esp?cies das fam?lias Pomacentridae (Perciformes) e Carangidae (Carangiformes), distribu?dos ao longo da costa e ilhas oce?nicas brasileiras. As an?lises moleculares e morfom?tricas realizadas em S. variabilis, S. fuscus, S. rocasensis, S. sanctipauli e S. fuscus trindadensis indicaram sinon?mia entre S. rocasensis e S. sanctipauli, e entre S. fuscus e S. fuscus trindadensis. Al?m disso, revelaram a presen?a de uma poss?vel esp?cie cr?ptica que tem sido confundida com S. variabilis. As an?lises populacionais em Abudefduf saxatilis no Atl?ntico Ocidental, incluindo as ilhas oce?nicas, revelam um quadro de panmixia desde a Venezuela at? o sudeste do Brasil, enquanto que as popula??es insulares possuem diferentes n?veis de estrutura??o gen?tica, sobretudo a da Ilha de Trindade. As an?lises gen?ticas na esp?cie polit?pica Caranx lugubris indicaram uma grande popula??o panm?tica no Atl?ntico Ocidental, lan?ando novos dados sobre a origem dos morf?tipos que ocorrem no entorno do Arquip?lago de S?o Pedro e S?o Paulo. Os dados obtidos aprofundam o conhecimento da fauna ?ctica insular do Atl?ntico e servem de subs?dios para o manejo e conserva??o de esp?cies dessas importantes e particulares regi?es oce?nicas. / The extensive Brazilian coast is multi-party in different ecosystems, composed by estuaries, mangroves, reef systems, oceanic and coastal islands. These environments detain a largely diversified ichthyofauna composed by 1,297 species, in which 25% represents endemic species. These levels of biodiversity can be uncertain, because of the occurrence of cryptic and polytypic species and the absence of population studies, especially in reef species. In this sense, population, taxonomical and phylogenetical aspects were analyzed form species of the Pomacentridae (Perciformes) and Carangidae (Carangiformes) families, along the coast and oceanic islands of Brazil. The molecular and morphometric analyzes were performed in S. variabilis, S. fuscus, S. rocasensis, S. sanctipauli and S. fuscus trindadensis indicated synonym among S. rocasensis and S. sanctipauli, and between S. fuscus and S. fuscus trindadensis. Besides that, revealed the presence of a possible cryptic species which has been confused with S. variabilis. The population analyzes in Abudefduf saxatilis at the Western Atlantic, including the oceanic islands, reveals a status of panmixia from Venezuela to the Southeast of Brazil, while the island populations have different levels of genetic structuration, specially the population of the Trindade island. The genetic analyzes in the polytypic species Caranx lugubris indicated a large panmitic population in the Western Atlantic, revealing new data about the origins of the morphotypes that occurs in the surroundings of the Saint Paul Rocks archipelago. The data obtained expands the knowledge over the insular ichthyic fauna of the Atlantic and serves as subsidy to the conservation and management of species of these particular and important oceanic regions.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/23522 |
| Date | 30 March 2017 |
| Creators | Souza, Allyson Santos de |
| Contributors | 56615043491, http://lattes.cnpq.br/8437464961129518, Lima, S?rgio Maia Queiroz, 08556252796, http://lattes.cnpq.br/8316105480397252, Blaha, Carlos Alfredo Galindo, 80573380082, http://lattes.cnpq.br/2307806644081146, Garcia J?nior, Jos?, 27234944893, http://lattes.cnpq.br/9453700782433881, Lima Filho, Paulo Augusto de, 30720553865, http://lattes.cnpq.br/6923870491324619, Molina, Wagner Franco |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM SISTEM?TICA E EVOLU??O, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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