Trichodina heterodentata (Ciliophora: Trichodinidae) Parasitizing Piaractus brachypomus Cultivated in Ecuadorian Amazon
Trichodina heterodentata (Ciliophora: Trichodinidae) Parasitizing Piaractus brachypomus Cultivated in Ecuadorian Amazon
Yanis Cruz-Quintana1*, Ana María Santana-Piñeros1, Byron Manuel Reyes-Mero1, Leonela Griselda Muñoz-Chumo1 and Lenin Cáceres-Farías1,2
Figure 1:
Trichodina heterodentata parasitizing Piaractus brachypomus. (A) Fresh-mounted smear from the gill arches showing light hyperplasia (arrowhead) and Trichodina (arrow); (B) Trichodinids (arrowheads) in a fresh-mounted smear from the fins; (C) Silver impregnated adhesive disc; (D) Nuclear apparatus; (E) Schematic drawing of the denticles; (F) Histological section of gill from parasitized fish showing light hyperplasia (arrowhead) and thickening of gill filaments. H-E. Scale bars: A, B, F = 200 µm; C, D = 10 µm; E = 5 µm.
Table 2:
Measurement data of Trichodina heterodentata Duncan (1977) reported in fishes from Philippines (original description) and South America, including this study.
Arithmetic mean ± standard deviation. ND: No Data; D: diameter; W: width; L: long.
November 2023
Vol. 39, Sp. Iss. 2
