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Previous issue date: 2012-04-27 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / Cytogenetic studies in fish have been contributed significantly to a better understanding of the marine biodiversity, presenting information related to characterization, evolution and conservation of species e fisheries stocks. Among the marine species which cytogenetic data are less well known pelagic forms are detached, that despite the economic importance and conservation efforts have been suffering great pressure from the artisanal and industrial fisheries. The present work characterized cytogenetically six species of large pelagic fish in the Atlantic, belonging to the Order Perciformes, among them, four species of Scombridae, Thunnus albacares, T. obesus, Scomberomorus brasiliensis and Acanthocybium solandri and two Coryphaenidae, Coryphaena equiselis and C. hippurus using Classical cytogenetic methods as conventional staining, C-banding and Ag-NORs and molecular through staining fluorochromes AT and GC-specific and mapping of ribosomal multigene families, 18S and 5S. The identification of phylogenetic patterns and cytotaxonomic markers between the species and the presence of sex chromosomes in at least one species of Coryphaenidae, are particularly useful in the formulating of phylogenetic hypotheses, as well as comparisons between groups and populations / Os estudos citogen?ticos em peixes v?m contribuindo significantemente para um melhor conhecimento sobre a biodiversidade marinha, apresentando informa??es voltadas ? caracteriza??o, evolu??o e conserva??o de esp?cies e estoques pesqueiros. Entre as esp?cies marinhas cujos dados citogen?ticos s?o menos conhecidos se destacam as formas pel?gicas, que apesar da import?ncia econ?mica e de esfor?os conservacionistas v?m sofrendo grande press?o da pesca artesanal e industrial. O presente trabalho caracterizou citogeneticamente seis esp?cies de grandes peixes pel?gicos no Atl?ntico, pertencentes ? Ordem Perciformes, dentre elas, quatro esp?cies de Scombridae, Thunnus albacares, T. obesus, Scomberomorus brasiliensis e Acanthocybium solandri e duas de Coryphaenidae, Coryphaena equiselis e C. hippurus utilizando m?todos citogen?ticos cl?ssicos, como colora??o convencional, bandamento C e Ag-RONs, e moleculares, atrav?s da colora??o com fluorocromos AT e GC-espec?ficos e mapeamento de fam?lias multig?nicas ribossomais 18S e 5S. A identifica??o de padr?es filogen?ticos e marcadores citotaxon?micos entre as esp?cies e a presen?a de cromossomos sexuais em pelo menos uma esp?cie de Coryphaenidae, s?o particularmente ?teis na formula??o de hip?teses filogen?ticas, bem como em compara??es entre grupos e popula??es
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/14033 |
| Date | 27 April 2012 |
| Creators | Soares, Rodrigo Xavier |
| Contributors | CPF:56615043491, http://lattes.cnpq.br/8437464961129518, Souza, Liliane de Lima Gurgel, CPF:03095950454, http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4701211U3, Caetano, Lucia Giuliano, CPF:04314208821, http://lattes.cnpq.br/2050785614381576, Molina, Wagner Franco |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Ecologia, UFRN, BR, Bioecologia Aqu?tica |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| 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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