Resumo

TAFUR ZEVALLOS, Lisandro  e  COTRINA, Marcelo. Identification of parasites in youth paiches "Arapaima gigas". Scientia Agropecuaria [online]. 2017, vol.8, n.4, pp.305-314. ISSN 2077-9917.  http://dx.doi.org/10.17268/sci.agropecu.2017.04.02.

The aim of this research was to identify parasitosis in juvenile paiches "Arapaima gigas", raised in captivity at the Peruvian Amazon Research Institute (IIAP-Ucayali), Peru. In a population of 190 juveniles, a random sample of 50 individuals of 2.5 years of age was taken. The evaluation technique was visual-direct and microscopic. 5 ectoparasites were identified: Trichodina sp. (Protozoan cilia), Dolosp sp. (Crustacean), Dawestrema cycloancistrium (Monogeneo), Dawestrema cycloancistroides (Monogeneo) and Placobdella sp. (Leech); 3 endoparasites were found: Nilonema senticosum (Nemátodo), Caballerotrema sp. (Tremátodo) and Gymnodinium sp. (Protozoario flagellate); no hemoparasites were identified in the blood smears. Parasites were found in the following organs: gill filaments (Trichodina sp. Dawestrema cycloancistrium and Dawestrema cycloancistroides), skin and fins (Trichodina sp., Placobdella sp. and Dolosp sp.), aerial bladder or pseudo lung (Nilonema senticosum), intestine (Caballerotrema sp.) and stomach (Gymnodinium sp.).

Palavras-chave : Arapaima gigas; Dawestrema; Trichodin; Nilonema.

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