TY - JOUR T1 - Influence of the type of environment and of the hydrological level variation in endoparasitic infrapopulations of Pseudoplatystoma corruscans (Agassiz) and Schizodon borelli (Boulenger) (Osteichthyes) of the high ParanĂ¡ River, Brazil JO - Revista Brasileira de Zoologia A1 - Machado, Marion H A1 - Pavanelli, Gilberto C A1 - Takemoto, Ricardo M SN - 0101-8175 UL - 10.1590/S0101-81751995000400023 VL - 12 Y1 - 1995 PB - Brasil ER -