TY - SER AU - Zaions,M.I. AU - Baldisserotto,B. TI - Na+ and K+ body levels and survival of fingerlings of Rhamdia quelen (Siluriformes, Pimelodidae)exposed to acute changes of Water pH KW - Bagre KW - Sodio KW - Potassio KW - Alevino KW - PH KW - Sobrevivencia KW - Mortalidade ER -