Casal G ; Matos E ; Azevedo C ;

Parasitol Res vol. 83 (1)   pp. 93-5, 1997

Department of Cell Biology, High Institute of Health Sciences, Paredes, Portugal.

Animal ;  Brazil ;  Comparative Study ;  Female ;  Fishes: parasitology ;  Fresh water ;  Gills: parasitology ;  Male ;  Protozoa: ultrastructure ;  Support,Non-U.S.Gov't ;  3220 ;