01920naa a2200349 a 450000100080000000500110000800800410001902400410006010000240010124502010012526000090032652008640033565000120119965000180121165000130122965000130124265000170125565000150127265000140128765000150130165000130131665000240132965300160135365300180136965300170138770000210140470000210142570000200144670000210146670000190148777300640150620611912017-03-03       2016    bl uuuu     u00u1 u    #d7 adx.doi.org/10.1515/ap-2016-00992DOI1 aHASHIMOTO, G. S. O.  aA new species of Trichodina Ehrenberg, 1830 (CiliophorabTrichodinidae) from Rhamdia quelen (Siluriformes: Heptapteridae) and Gymnotus sp. (Teleostei: Gymnotidae) in Brazil.h[electronic resource]  c2016  aAbstract: The present study describes a new species of Trichodina found in the mucus of the body surface of 137 farmed and wild silver catfish (Rhamdia quelen) located in southern Brazil and in the gills of 99 banded knife fish (Gymnotus sp.) captured in the basin of Pantanal. Smears of the body surface mucus and gills were air dried at room temperature and impregnated with silver nitrate and stained with Giemsa for analysis of the adhesive disc, denticles and macronucleus. Characterized as a medium trichodinid, Trichodina quelenii n. sp. resembles T. heterodentata and T. acuta. It differs from T. heterodentata by the shape of the blade and from T. acuta by the lack of central circle. Furthermore, the distinct shape of the blade of T. quelenii n. sp. differs from all previously described species for the genus, leaving no doubt it is a new species.  aCatfish  aEctoparasites  aGymnotus  aPantanal  aparasitology  aprevalence  aSiluridae  aTrichodina  aParasito  aPeixe de água doce  aDescription  aGymnotid fish  aSilurid fish1 aMARCHIORI, N. C.1 aPÁDUA, S. B. de1 aISHIKAWA, M. M.1 aGARCIA, J. R. E.1 aMARTINS, M. L.  tActa Parasitologica, Warsawgv. 61, n. 4, p. 707-712, 2016.