The effect of temperature on length of time for digestion of bacteria was evaluated, by using fluorescently labeled bacteria (FLB), for phagotrophic flagellates and ciliates isolated from coastal northwest Mediterranean waters. Accumulation of FLB in protozoan food vacuoles was followed until a plateau of FLB per cell occurred; then after a 1:10 dilution of FLB with unlabeled bacteria, disappea...

Five acidophilic protozoa (three flagellates, one ciliate and one amoeba) were isolated from acid mine water and a coal biotreatment plant, and grown in mixed cultures with acidophilic bacteria. Cultures were routinely maintained in ferrous sulphate media: in media containing pyrite or pyritic coal, protozoa grew in cultures containing coarse-grain (61-200 pm) but not fine-grain (c 61 pm) miner...

American cutaneous leishmaniasis has been reported in all Brazilian states and in the Paraná this disease is endemic. The objective of this work was to detect natural infections in phlebotomines to verify the vector competence of these insects and the identification of the parasite species. Phlebotomines were collected using Falcão and Shannon traps, in the municipalities of Doutor Camargo, Fên...

Crifhidia fasciculata, Crifhidia oncopelti, Crifhidia luciliae, Crithidia sp. from Arilus crisfafus, Crifhidia acanthocephali, Blastocrifhidia culicis, Leishmania tarenfolae, and Lepfomonas Zepfoglossi were grown under axenic conditions in chemically defined media, and their fatty acids were determined. Palmitic, stearic, and a Cl9 cyclopropane acid were the major saturated fatty acids. Oleic, ...

Abstract. We studied phytoplankton and protozooplankton community composition based on light microscopy, flow cytometry, photosynthetic pigment data in the Atlantic sector of Southern Ocean during March 2019 (early austral autumn). Sampling was focused area east prime meridian Kong Håkon VII Hav, including Astrid Ridge, Maud Rise, a south–north transect at 6∘ E. Phytoplankton throughout charact...