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Ultrastructuraland molecular analysis of myxosporean parasites from Amazon Basin

Grant number: 16/01118-3
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): April 01, 2016
Effective date (End): March 31, 2019
Field of knowledge:Agronomical Sciences - Fishery Resources and Fishery Engineering
Principal Investigator:Antonio Augusto Mendes Maia
Grantee:Tatiane Carolina Ponzetto
Home Institution: Faculdade de Zootecnia e Engenharia de Alimentos (FZEA). Universidade de São Paulo (USP). Pirassununga , SP, Brazil


Myxosporean are cosmopolitan parasites and infect mainly fish and annelids. To dateapproximately 2,400 species have been described. However, for South America, where is the largestfish diversity, there are still few studies considering these parasites. The Amazon basin has anextraordinary fish fauna, with species still unknown and others with large economic importance infishing or as ornamental fish, as well as with potential for fish farm. Among the species ofeconomic importance, for both extractive fishing and fish farm potential, are those of thePimelodidae family. In this proposal, the aim is study the taxonomic and parasite-host relationshipof myxosporeans found infecting Pseudoplatystoma triginum (caparari) and Pseudoplatystomapunctifer (cachara) from the natural environment of the Amazon Basin, in the municipality ofSantarém, state of Pará, in the meeting place of the Tapajós and Amazon rivers region. Fortaxonomic analysis, will be used traditional tools of morphological analysis, combined with themodern techniques of molecular biology and ultrastructure. For the study of host-parasiterelationship will be used ultrastructural analyses.