ABSTRACT. Laying, development and hatching of eggs of the D%ps carval/w; Lemos de Castro (Crustacea. Branchiura), reared in the laboratory, parasite from fi shes of Central Amazon. Dolo!,s carvalho; Lemos de Castro, 1949 was found infesting fish in a fish culture station located in highway AM-O I O Manaus-Itacoatiara in the State of Amazonas. Egg laying of D. calvalho; was studied. Hatching started after 16 days in a temperature span of 26 to 28°C. Eggs were laid in c1usters on hard substrata and covered by a gelatinous material. The number of eggs was 16 to 392 eggs by laying. In the postembryonic development the larvae were hatched from the egg as juveniles (epimorphic development), very similar to the adult shape. KEY WORDS. Argulidae, Dolops carval//O;, laying, eggs, fish parasites, AmazonAs espécies do gênero Dolops Audouin, 1837 são as únicas da subclasse Branchiura que apresentam maxílulas robustas, dilatadas na base e na extremidade distaI com um forte gancho quitinoso, durante toda a vida. O aparelho bucal não apresenta o estilete anterior ao cone oral. As antenas não possuem o espinho anterior (RINGUELET 1943;LEMOS DE CASTRO 1986