This study investigated the in vitro efficacy of essential oils (OEs) of four species of plants of the family Piperaceae, these being; Piper hispidinervum, Piper hispidum, Piper marginatum and Piper callosum, in the control of Neoechinorhynchus buttnerae acanthocephalus that affect tambaqui. The tested concentrations of OE were: 0.19; 0.39; 0.78; 1.56; 3.125; 6.25; 12.5; 25 and 50 mg.mL-1, in triplicate, into p...
The aim of this study was to evaluate the impacts of metazoan parasites on hematological and biochemical parameters and relative condition factor of tambaqui (Colossoma macropomum) farmed in northern Brazil. A total of 32 juvenile fish were captured from a commercial fish farm located in the municipality of Rio Preto da Eva, Amazonas state, Brazil. Parasite prevalence was 100% for Anacanthorus spathulatus, Myma...
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