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Estudos sobre alguns parasitas monogenéticos
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ISBN10: 6209946267
ISBN13: 9786209946264
Publisher: Edicoes Nosso Conhecimento
Published: May 12 2026
Pages: 196
Weight: 0.59
Height: 0.45 Width: 6.00 Depth: 9.00
Language: Portuguese
ISBN13: 9786209946264
Publisher: Edicoes Nosso Conhecimento
Published: May 12 2026
Pages: 196
Weight: 0.59
Height: 0.45 Width: 6.00 Depth: 9.00
Language: Portuguese
Devido à importância económica dos peixes marinhos e de água doce, foi necessário investigar os principais parasitas monogenéticos que infestam uma das espécies de peixe marinho, o Scomberomorus commerson, que habita o mar Mediterrâneo na região de Damietta, no Egito, e o peixe do Nilo Oreochromis nilotica, uma vez que os monogenéticos têm sido responsáveis por importantes surtos epizoóticos com graves consequências. O estudo revelou a presença das espécies de monogeneanos poliopistocotÃlicos Gotocotyla aegypticus, Pricea multae e Pseudothoracocotyla gigantica nas brânquias do peixe marinho. O peixe do Nilo estava infestado pelo verme monogeneano monopistocotÃlico Enterogyrus cichlidarum no estômago. A anatomia comparativa é a área de interesse neste estudo, através de diferentes técnicas que incluem os métodos histológicos tradicionais por microscopia óptica, além da microscopia eletrónica de varrimento e estudos ultraestruturais detalhados utilizando microscopia eletrónica de transmissão. O estudo destacou os órgãos de fixação e a construção das suas partes, tendo-se centrado na exploração das especializações superficiais associadas ao tegumento, à s aberturas e a alguns órgãos reprodutivos.
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