Embryos and yolk-sac larvae of turbot Scophthalmus maximus are infested with an endoparasite from the gastrula stage onwards

Abstract

An organism which under light microscopy is indistinguishable from a protistan endoparasite found in larval cod Gadus morhua was discovered in turbot Scophthalmus maximus embryos and yolk-sac larvae. The organism exhibits a predilection for the same sites as the cod parasite and is probably lethal for the fish larvae.