Sanches, E.A. Baggio, D.M. Piana, P.A. Souza, B.E. Bombardelli, R.A. Artificial fertilization of oocytes and sperm activation in pacu: effects of the spermatozoa: oocyte ratio, water volume, and in natura semen preservation Subjects--Topical Terms: PACUPEIXE DE ÁGUA DOCEREPRODUÇÃO ANIMAL