CHEMICAL ANALYSIS TROUGH “ENERGY-DISPERSIVE SPECTROSCOPY (EDS)” OF DIGENEA METACERCARIAE FOUND INFESTING SPECIMENS OF HOPLOSTERNUM LITORALLE (HANCOCK, 1828) (SILURIFORMES: CALLICHTHYDAE), CAPTURED IN MANAUS POLLUTED IGARAPES

• Autores: Mota Morais, Aprigio, de Oliveira Malta, José Celso
• Formato: artículo
• Fecha de Publicación: 2014
• Institución: Universidad Nacional Federico Villarreal
• Repositorio: Revistas - Universidad Nacional Federico Villarreal
• Lenguaje: español
• OAI Identifier: oai:ojs2.revistas.unfv.edu.pe:article/913
• Enlace del recurso: https://revistas.unfv.edu.pe/NH/article/view/913
• Nivel de acceso: acceso abierto
• Materia: Amazon; chemical elements; fishes; Platyhelminthes; pollution.; Amazonía; elementos químicos; peces; polución.

We examined 82 Hoplosternum littorale captured in two Manaus polluted igarapes, namely, São Raimundo and Educandos, in October and November 2010. Fish specimen's standard length and weight showed to be 14.87±71 cm and 16.53±24.01 g, respectively. We carried out the chemical analyses of tissues with the aid of an Energy-Dispersive Spectroscopy (EDS) system in conjunction with a Scanning Electron Microscope (SEM). We determined the punctual qualitative and semi-quantitative chemical composition of the metacercariae of Clinostomum marginatum, Tylodelphis destructor and of the pro-genetic metacercaria Herpetodiplostomum caimanicola, by using the characteristic X-ray emission. Microanalyses by EDS determined the presence of carbon (C); oxygen (O); iron (Fe); zinc (Zn); aluminum (Al); siliceous (Si); phosphorous (P); sulfur (S); potassium (K); calcium (Ca); chlorine (Cl); copper (Cu); lead (Pb); manganese (Mn); platinum (Pt); tungsten (W) and cobalt (Co). The detected heavy metals Cu, Pb and W indicated that igarapes is heavily polluted, and that Digenea metacercariae are highly tolerant to the accumulation of these elements.