TY - SER AU - Portela Castro,A.L.B. AU - Ferreira Júlio,Horacio,Jr AU - Belini Nishiyama,P. TI - New occurrence of microchromosomes B in Moenkhausia sanctaefilomenae - Pisces, Characidae - from the Paraná river of Brazil: analysis of the synaptonemal complex KW - Characidae KW - Moenkhausia ER -