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Trematodes Generalidades

Trematodes Generalidades. Platelmintos no segmentados Acelomados, parénquima Tubo digestivo incompleto Tegumento Sin aparato respiratorio ni circulatorio Sistema excretor protonefridial Hermafroditas excepto Schistosoma Fertilización cruzada. Monogenea.

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Trematodes Generalidades

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  1. TrematodesGeneralidades • Platelmintos no segmentados • Acelomados, parénquima • Tubo digestivo incompleto • Tegumento • Sin aparato respiratorio ni circulatorio • Sistema excretor protonefridial • Hermafroditas excepto Schistosoma • Fertilización cruzada

  2. Monogenea • Ectoparasitos: piel y escamas de peces, anfibios, reptiles y cetáceos. • Opistaptor: órgano de adhesión con o sin ganchos • Adultos, huevos y larva • Hermafroditas • Algunas especies vivíparas

  3. Esquema corporal de un Monogenea

  4. Digenea • Parásitos • Todos los grupos de vertebrados • Ventosa oral y ventral • Heteroxenos • Ciclos complejos con varias generaciones larvarias que parasitan caracoles • Adultos hermafroditas • Parásitos de alto impacto sanitario (Schistosoma) y económico (Fasciola)

  5. Plan de organización corporal de digenea Some common types of adult digenean worms, which are differential according to the appearance of their (e.g. suckers). The location of sexual organs is only approximate. HK, hooks at collar; IN, intestine; M, mouth; OS, oral sucker; OV, ovary; PH, pharynx; TE, testes; TR, tribocytic organ; VS, ventral sucker

  6. Digenea: Ciclos biologícos

  7. Adultos de clase Digenea EX, excretory bladder; GP, genital pore; GÖ, genital bulbus; HK, hooks, spines of IN, intestine; INC, intestine (cut off on drawing); LC, ; OS, oral sucker; OV, ovary (); RS, TE, UT, uterus with eggs; VE, vas efferens of TE; VI, vitellary glands VS, ventral sucker ()

  8. Adultos de clase Digenea: localización intestinal BE, bulbus of esophagus; BU, bulbus (apical); EX, excretory bladder; GP, genital pore; HK, hooks, spines of tegument; IN, intestine; LC, OS, oral sucker; OV, ovary RS, receptaculum seminis; UT, uterus with eggs; VI, vitellary glands (); VS, ventral sucker (); VSE, vesicula seminalis

  9. Digenea: cercarias

  10. Tegumento

  11. Desarrollo del tegumento en digenea Diagrammatic representation of the development of the syncytial in digeneans (). A which is covered by ciliary plates and formed by the subtegumental layer. B Mother after detachment of ciliary plates. C Daughter sporocysts are covered by a syncytial tegument which is connected by bridges with the subtegumental layer. D the subtegumental layer becomes reduced, and later parenchymal cells will contact the syncytial tegument. CI, cilia; CM, circular muscles; CP, ciliary plate; F, foldings; FI, fibrous layer; G, germinal cells; LM, longitudinal muscles; N, nucleus; P, protruding subtegument; PA, parenchymal cell; RI, ridge; RS, remnants of the subtegument; ST, subtegumental layer; TG, tegument; TH, tegumental thorn (hook)

  12. Célula flamígera

  13. Gastrodermis

  14. Fasciola hepatica- Ciclo

  15. Fasciola hepatica

  16. Superficie tegumentaria de Fasciola hepatica

  17. Fasciola hepatica

  18. Fasciola hepatica- miracidio

  19. Huéspedes intermediarios de Fasciola hepatica en USA . Pseudosuccinea columella (susceptible)B. Fossaria obrussa (refractario)C. Fossaria bulimoides (susceptible)D. Fossaria dalli (refractario)E. Fossaria parva (refractario)

  20. Lymnaea viatrix

  21. Fasciola hepatica- huevo No embrionado Embrionado Miracidio emergiendo

  22. Fasciola hepatica: esporocisto

  23. Fasciola hepatica: redias

  24. Fasciola hepatica: cercaria

  25. Fasciola hepatica: metacercaria

  26. Fasciola hepatica: juvenil recientemente desenquistado

  27. Schistosoma mansoni- Ciclo biológico

  28. Schistosoma mansoni- adultos

  29. Schistosoma - huevos S. mansoniS. haematobium

  30. Huevos de Schistosoma mansoni en el intestino

  31. Schistosoma mansoni- miracidio

  32. Huésped intermediario Biomphalaria glabrata

  33. Schistosoma mansoni- Cercaria

  34. Schistosomula

  35. Schistosomulas de S. mansoni en estadío pulmonar

  36. Granuloma hepático

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