TY - SER AU - Lopes,R.A. AU - Lopes,O.V.P. AU - Paula,C.V. AU - Santos,H.S.L.dos AU - Nuti-Sobrinho,A. TI - On the reproduction of Brazilian fishes. 9. spermatogenesis of the surubim Pseudoplatystoma corruscan Agassiz 1829 (Pisces, Pimelodidae) KW - SURUBIM KW - REPRODUCAO ANIMAL KW - ESPERMATOGENESE ER -