The reproduction of Diplectanum aequans (Monogenea, Monopisthocotylea) : new data on the anatomy of the genital complex and its functioning.

International audienceObservations of mating of Diplectanum aequans show that the transfer of spermatozoa occurs during a copulation proper, not by the intromission of a spermatophore. The spermatophore described by Paling (1966) should be considered as a pseudo-spermatophore, a cap with appears to prevent the sperm from flowing back out of the vagina. A study with a scanning electron microscope reveals that the apertures of the uterus is distinct from that of the male genitalia. Cross-fecondation is compulsory, wether unilateral or bilateral. An individual is able to copulate several times during its life