DIGENETIC
Having two types of reproduction, one sexual occurring in
the definitive host and the other asexual (larval stages)
occurring in the intermediate host.
DIOECIOUS
Having separate sexes; reproductive systems and sex
organs in separate sexually defined individuals.
DIRECT LIFE CYCLE
Where there is no intermediate host required in the
transmission of a parasite from one host to another of the
same species.
DISTOME
A fluke with two suckers, one oral and one ventral.
DIURNAL
Occurring during the day.
DORSAL
Denoting a position at the back or more toward the back
plane.
E
ECDYSIS
Molting or shedding of the inexpansible cuticle allowing
growth of the organism to greater dimensions.
ECTOPARASITE
A parasite that lives on the outer surface of its host.
ECTOPIC
Located in a position or site other than the normal.
ECTOPLASM
The outer clear zone of cytoplasm on the immediate margin
of the cell.
EDEMA
The presence of abnormally large amounts of tissue fluid, or
lymph, in the intracellular spaces, causing localized swelling
of the affected area.
EMBRYOPHORE
A gelatinous layer formed around the embryo after the first
shell is diminished.
ENDEMIC DISEASE
A disease of low incidence that is always present in a
designated region.
ENDOCYTOSIS
The ingestion of a parasitic form by a phagocytic host cell
allowing the parasite to become established in its host.
ENDOPARASITE
A parasite that lives inside its host.
MD0841
A-6