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Systematic and genetic characterization of myxosporean populations parasites in Colossoma macropomum and Piaractus brachypomus in the Amazon Basin

Grant number: 15/07713-8
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): July 01, 2015
Effective date (End): April 30, 2019
Field of knowledge:Agronomical Sciences - Veterinary Medicine - Preventive Veterinary Medicine
Cooperation agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
Principal researcher:Antonio Augusto Mendes Maia
Grantee:Kassia Roberta Hygino Capodifoglio
Home Institution: Faculdade de Zootecnia e Engenharia de Alimentos (FZEA). Universidade de São Paulo (USP). Pirassununga , SP, Brazil


The phylum Myxozoa is composed by the parasites that cause diseases in fish of natural environment and farming systems in various parts of the world, which may be responsible for high mortality rates. The myxosporeans present a great diversity of species with some of these highly pathogenic and so have received attention from researchers, as well as fish producers. In Brazil, due to the great diversity of fish species, the study of these parasites is increasingly gaining prominence, with a focus on diversity, biology and host-parasite interaction. In this context, this project aims to survey the diversity of parasites of the phylum Myxozoa, as well as performing genetic analysis of population myxosporean parasites in Amazonian fish, important to the food market as Colossoma macropomum (tambaqui) and Piaractus brachypomus (pirapitinga). For the taxonomic study morphological analysis using light microscopy and molecular analysis using sequences of 18S rDNA and COI genes will be performed. In addition, sequencing of ITS-1 gene in each sample will be performed to evaluate the existence of intraspecific genetic variation among populations of the species found infecting the fish involved in this study. The fish will be captured in the Amazon Basin, regions of Santarém, PA and Manaus, AM. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
CAPODIFOGLIO, KASSIA R. H.; MEIRA, CAROLINE M.; DA SILVA, MARCIA R. M.; CORREA, LINCOLN L.; ADRIANO, EDSON A.; MAIA, ANTONIO A. M. Morphology and molecular data of two novel cnidarian myxosporean (Myxobolidae) infecting Piaractus brachypomus from the Amazon basin. Acta Tropica, v. 209, SEP 2020. Web of Science Citations: 0.
CAPODIFOGLIO, KASSIA R. H.; ADRIANO, EDSON A.; NALDONI, JULIANA; MEIRA, CAROLINE M.; DA SILVA, MARCIA R. M.; MAIA, ANTONIO A. M. Novel myxosporean species parasitizing an economically important fish from the Amazon basin. Parasitology Research, v. 119, n. 4 MAR 2020. Web of Science Citations: 1.
CAPODIFOGLIO, KASSIA R. H.; ADRIANO, EDSON A.; SILVA, MARCIA R. M.; MAIA, ANTONIO A. M. The resolution of the taxonomic dilemma of Myxobolus colossomatis and description of two novel myxosporeans species of Colossoma macropomum from Amazon basin. Acta Tropica, v. 191, p. 17-23, MAR 2019. Web of Science Citations: 0.

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