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Galea Spixii; Wagler, 1831) Criados Em Cativeiro

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Galea Spixii; Wagler, 1831) Criados Em Cativeiro PAULO RAMOS DA SILVA SANTOS Estudo ultraestrutural do desenvolvimento da espermatogênese e da via espermática de preás (Galea spixii; Wagler, 1831) criados em cativeiro São Paulo 2012 PAULO RAMOS DA SILVA SANTOS Estudo ultraestrutural do desenvolvimento da espermatogênese e da via espermática de preás (Galea spixii; Wagler, 1831) criados em cativeiro Dissertação apresentada ao Programa de Pós-Graduação em Anatomia dos Animais Domésticos e Silvestres da Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo para obtenção do título de Mestre em Ciências Departamento: Cirurgia Área de Concentração: Anatomia dos Animais Domésticos e Silvestres Orientador: Prof. Dr. Antônio Chaves de Assis Neto São Paulo 2012 FOLHA DE AVALIAÇÃO Nome: SANTOS, Paulo Ramos da Silva Título: Estudo ultraestrutural do desenvolvimento da espermatogênese e da via espermática de preás (Galea spixii; Wagler, 1831) criados em cativeiro. Dissertação apresentada ao Programa de Pós-Graduação em Anatomia dos Animais Domésticos e Silvestres da Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo para obtenção do título de Mestre em Ciências Data:___/___/____ Banca Examinadora Prof. Dr.: ____________________________________________________________ Instituição: ____________________________ Julgamento: __________________ Prof. Dr.: ____________________________________________________________ Instituição: ____________________________ Julgamento: __________________ Prof. Dr.: ____________________________________________________________ Instituição: ____________________________ Julgamento: __________________ Fonte: Hugo Coelho, 2009. “Baleia queria dormir. Acordaria feliz, num mundo de preás.” Graciliano Ramos Dedicatória Aos meus amados pais, Paulo dos Santos e Maria Cecília Ramos da Silva Santos, pelo amor, carinho, dedicação, os “suquinhos de laranja” de todas as manhãs, além do apoio que sempre tive, por nunca medirem esforços para proporcionar a mim uma ótima formação acadêmica, e deixar um grande ensinamento “Persistir até obter êxito”. Aos meus grandes irmãos, Gustavo dos Santos Netto (Gu) e Guilherme Ramos da Silva Santos (Gui), por todos os bons momentos que tivemos e pelos infinitos “helps” durante minha vida. Às minhas queridas avós, Aurora e Conceição (in memorian), pelo carinho eterno e dedicação que sempre tive. Às Marias da minha vida, Mãe, Maria Clara, Maria Cristina (Tia Madrinha), por sempre estarem presentes na minha vida, e Maria Carolina, pela grande alegria que nos proporciona. Ao meu orientador, Antônio Chaves de Assis Neto, pela oportunidade oferecida de continuarmos trabalhando juntos na pesquisa, por acreditar no meu potencial, pela amizade, paciência, por todos os ensinamentos e pela parceria desde a graduação. AGRADECIMENTOS Aos Assisetes, Maria Angélica (MA, a segunda), Delys (Natal, Chris), Bruno (Berta), Patty, Maria Vitória (Cô), Daniela (Bragança), Amilton (Capitão), Camila (Juta), por fazerem uma vida melhor na pós-graduação, pelos grandes momentos de festa sem deixarmos de cumprir com as obrigações, por compartilharem momentos de muitas alegrias e tensões. Aos meus amigos de Graduação da Unesp Dracena, Carmen, Ludmila, MA, Miojo, Isa, Fruchi, Slot, Kralho, Fer, Dé, Fran, Marisa, Kelly, Trops, Puff, mesmo cada um seguindo o seu caminho, encontramos um tempinho para nossa amizade. Aos meus amigos do Colegial, Cássia, Carol, Paulo e Barbara, mesmo eu indo para o extremo do Estado, nossa amizade permanece a mesma. Aos amigos de Pós-graduação da Anatomia, Thais (Cô), Rodrigo, Elaine (rumo ao BFF), Rafa Carvalho, Marina Brolio, Marcão, André Franciolli, Greyson, Phelipe, Marcio, Naira, Bruno (Mineiro), Aline (Chapolete), Silvia, Amanda, Diego Muniz, Diego Carvalho, Caio, Matheus Tarja, Luana Stunitz, Di Kelly, Sarmento, Aninha, pela amizade e convivência. A Prof. Dr. Maria Angelica Miglino, pela oportunidade do ingresso e desenvolver a pesquisa no programa de pós-graduação. Ao Prof. Moacir Franco de Oliveira, pela grande colaboração no projeto, pela amizade, e por ter me recebido em sua casa, de braços abertos durante o período de coleta de material. Aos Professores do Programa de Pós-graduação em Anatomia dos Animais Domésticos e Silvestres, Alan Peres Ferraz de Melo, Carlos Eduardo Ambrósio, Francisco Javier Henandez-Blazquez, José Roberto Kfouri Jr; Maria Angelica Miglino; Paula de Carvalho Papa e Pedro Primo Bombonato, pelos ensinamentos. A Prof. Dr. Isaura Maria Mesquita Prado e Prof. Dr. Andrea Maria Mess, pelo apoio, ensinamentos e colaborações neste projeto. Aos funcionários do Departamento de Cirurgia da FMVZ/USP-São Paulo Edinaldo Ribas Farias, Jaqueline Martins de Santana, Maicon Barbosa da Silva, Ronaldo Agostinho da Silva e Rose Ely Grassi Rici pelo apoio e colaboração neste projeto. A Coordenação do CEMAS - Centro de Multiplicação de Animais Silvestres da Universidade Federal Rural do Semi-Árido, Mossoró, RN por ter cedido os animais para esta pesquisa e pela parceria desde minha iniciação científica. A FAPESP – Fundação de Amparo a Pesquisa do Estado de São Paulo, pelo financiamento do projeto por intermédio de bolsas (projetos FAPESP nº 2008/57190-8 e 2010/14516-0) e Auxílio Reunião Exterior (projeto nº 2011/51238-1) que possibilitou a divulgação dos resultados desta pesquisa em eventos internacionais renomados na área de Medicina Veterinária. “No tempo de semear, aprenda; no tempo de colher, ensine; no entretempo, desfrute.” William Blake RESUMO SANTOS, P. R. S. Estudo ultraestrutural do desenvolvimento da espermatogenese e da via espermática de preás (Galea spixii; Wagler, 1831) criados em cativeiro. [Ultrastructural study of the development of spermatogenesis and sperm airway in preá (Galea spixii; Wagler, 1831)]. 2012. 149 p. Dissertação (Mestrado em Ciências) – Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, 2012. A potencialidade da produção de inúmeras espécies silvestres vem sendo pesquisada em todo mundo, demonstrando que estas podem se transformar em fontes renováveis de produtos de grande rentabilidade. Alguns espécimes vêm sendo explorados indiscriminadamente como fonte de proteína de origem animal, como o preá (Galea spixii) que já está sendo criado com objetivo de manejo e reprodução, com repercussão econômica. Para perspectiva de produção comercial e de preservação da espécie, tem de haver estudo das diversas etapas do desenvolvimento testicular, especialmente daquelas associadas à puberdade e a maturidade sexual na reprodução. Assim, o presente projeto desenvolvido teve como objetivo avaliar os detalhes ultraestruturais dos componentes dos compartimentos testiculares, a evolução do processo espermatogênico e os aspectos relativos à evolução dos demais órgãos da via espermática em preás em diferentes fases do ciclo reprodutivo. Fragmentos testiculares e da via espermática de preás machos em diferentes idades foram coletados no Centro de Multiplicação da Universidade Federal Rural do Semiárido, Mossoró, RN, por ocasião do projeto de IC (Processo FAPESP n º 08/57190-8). O material coletado foi processado para microscopia de luz, microscopia eletrônica de varredura e microscopia eletrônica de transmissão. As observações e eletromicrografias sub-celulares e de superfície foram realizadas nos microscópios eletrônicos de transmissão e varredura do Setor de Anatomia da FMVZ/USP. Dados microscópicos revelaram a presença de espermatozoides no lúmen do túbulo seminífero e do epidídimo aos 45 dias de idade. O desenvolvimento das células de Sertoli e Leydig está diretamente relacionado com a entrada à puberdade dos preás. Os estádios de desenvolvimento sexual em preás podem ser classificados nas seguintes fases: impúbere (zero e 15 dias), pré-púbere (30 dias), púbere (45, 60, 75 e 90 dias de idade) e pós-púbere (120 e 150 dias). Palavras-chave: Animais silvestres. Órgãos genitais masculinos. Testículo. Macho. ABSTRACT SANTOS, P. R. S. Ultrastructural study of the development of spermatogenesis and sperm airway in preá (Galea spixii; Wagler, 1831). [Estudo ultraestrutural do desenvolvimento da espermatogenese e da via espermática de preás (Galea spixii; Wagler, 1831) criados em cativeiro]. 2012. 149 p. Dissertação (Mestrado em Ciências) – Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, 2012. The production capability of many wild species has been researched worldwide, demonstrating that these can turn into renewable products with high profitability. Some specimens have been indiscriminately exploited as a source of animal protein, such as the cavy (Galea spixii) that is already created with the purpose of handling and reproduction, with economic impact. To view the commercial production and preservation of the species, there must be study of the various stages of testicular development, especially those associated with puberty and sexual maturity in reproduction. Thus, this project was developed to evaluate the ultrastructure details of the components of testicular compartments, the evolution of the spermatogenic process and aspects of the evolution of spermatic via in spix's yellow-toothed cavy at different stages of the reproductive cycle. Testicular fragments and spermatic via the male spix's yellow-toothed cavy at different ages were collected Multiplication Center of Universidade Federal Rural do Semi-Arido, Mossoró, RN, at the Scientific Initiation Project (FAPESP Process No. 08/57190-8). The collected material was processed for light microscopy, scanning electron microscopy and transmission electron
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