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dc.contributor.authorBernardo, Joice dos Santos Lima
dc.date.accessioned2023-12-22T01:42:33Z-
dc.date.available2023-12-22T01:42:33Z-
dc.date.issued2010-04-09
dc.identifier.citationBERNARDO, Joice dos Santos Lima. Morfologia peniana de três espécies de tuco-tucos do Brasil (Rodentia: Ctenomyidae). 2010. 65 f. Dissertação (Mestrado em Biologia Animal) - Instituto de Ciências Biológicas, Universidade Federal Rural do Rio de Janeiro, Seropédica, 2010.por
dc.identifier.urihttps://rima.ufrrj.br/jspui/handle/20.500.14407/10728-
dc.description.abstractO gênero Ctenomys Blainville, 1826 possui uma sistemática complexa e apesar de já existirem estudos moleculares e morfológicos sobre o gênero, ainda é difícil identificar e classificar estes indivíduos que possuem uma alta diversificação cariotípica com números diplóides variando de 2n= 10 a 2n= 70. Porém, alguns autores confirmam a utilidade taxonômica de estruturas como pênis e baculum no estudo da sistemática de roedores.O pênis, assim como o baculum (osso peniano), tem sido alvo de diversos estudos devido sua grande diversidade morfológica. O presente trabalho se baseia no estudo da morfologia externa do glans penes e do baculum de Ctenomys minutus, Ctenomys flamarioni e Ctenomys torquatus com o objetivo de identificar possíveis variações e comparar as diferenças encontradas. O estudo foi feito a partir dos pênis fixados de indivíduos adultos das espécies listadas anteriormente. Foram feitas fotografias, dissecções, desenhos com câmara clara e diafanização dos pênis. Para análises da microestrutura da superfície do glans penes foi utilizado a técnica de Microscopia Eletrônica de Varredura (MEV). Os resultados revelaram grandes diferenças morfológicas na estrutura do baculum das três espécies analisadas e revelaram estruturas semelhantes a espinhos que recobriam toda a superfície do glans penes com distribuição variando ao longo da glande. Nossos resultados indicam que o baculum pode ser um excelente marcador taxonômico em grupos complexos como é o caso dos Ctenomys. Estudos morfológicos da superfície do glans penes e do baculum aliados a estudos genéticos, moleculares e biogeográficos podem fornecer informações importantes para melhor entendermos a sistemática, evolução e taxonomia do gênero.por
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpor
dc.formatapplication/pdf*
dc.languageporpor
dc.publisherUniversidade Federal Rural do Rio de Janeiropor
dc.rightsAcesso Abertopor
dc.subjectroedorpor
dc.subjectmorfologiapor
dc.subjectpênispor
dc.subjectCtenomyspor
dc.subjectrodenteng
dc.subjectmorphologyeng
dc.subjectpeniseng
dc.subjectCtenomyseng
dc.titleMorfologia peniana de três espécies de tuco-tucos do Brasil (Rodentia: Ctenomyidae)por
dc.typeDissertaçãopor
dc.description.abstractOtherThe genus Ctenomys Blainville, 1826 has a systematic and complex although there are morphological and molecular studies on the genus, it is still difficult to identify and classify these individuals who have a high diversity of karyotypes with diploid numbers ranging from 2n = 10 to 2n = 70. However, some authors confirm the usefulness of taxonomic structures such as penis and baculum in the systematic study of rodents. The penis, as well as the baculum (penis bone), has been the subject of several studies because of its great morphological diversity. This work is based on the study of external morphology of the glans penes and baculum of Ctenomys minutus, Ctenomys flamarioni and Ctenomys torquatus to identify possible variations and compare the differences. The study was done from the penis of adult set of the species listed above. Photographs were taken, dissections, drawings with a camera lucida and diaphanization the penis. For analysis of the microstructure of the surface of the glans penes was used the technique of scanning electron microscopy (SEM). The results showed great differences in morphological structure of the baculum of the three species analyzed and showed structures similar to thorns that covered the entire surface of the glans penes with varying distribution over the glans. Our results indicate that the baculum may be an excellent marker complex taxonomic groups such as the Ctenomys. Morphological studies of the surface of the glans penes and baculum combined with genetic studies, molecular and biogeographical can provide important information to better understand the systematic, evolution and taxonomy of the genus.eng
dc.contributor.advisor1Barbosa, Oscar Rocha
dc.contributor.advisor1ID500.325.937-91por
dc.contributor.advisor1Latteshttp://lattes.cnpq.br/6551622738384590por
dc.contributor.referee1Santos, Jacenir Reis dos
dc.contributor.referee2Freitas, Thales Roberto O. de
dc.creator.ID103.262.047-17por
dc.creator.Latteshttp://lattes.cnpq.br/5185889610329269por
dc.publisher.countryBrasilpor
dc.publisher.departmentInstituto de Ciências Biológicas e da Saúdepor
dc.publisher.initialsUFRRJpor
dc.publisher.programPrograma de Pós-Graduação em Biologia Animalpor
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dc.subject.cnpqMorfologiapor
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dc.originais.urihttps://tede.ufrrj.br/jspui/handle/jspui/2351
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