Veterinary Technology~Parasitology Ch. 14

Oocyst

Parasitic stage produced by the sporozoites of Cryptosporidium parvum.

Merozoite

Protozoan cell that arises from the multiple fission of parent sporozoans a and may enter either the asexual or sexual phase of the life cycle.

Schistosome

Blood fluke

Cestode

Adult stage of a tapeworm

Acariasis

Disease, usually of the skin, caused by infestation with mites.

Tachyzoite

Fast growing developmental stage Thant occurs in the cysts in the life cycle of Toxoplama gondii.

Parthenogenesis

Type of nonsexual reproduction in which an organism develops from an unfertilized ovum.

Brood capsule

A structure that is formed from the germinal membrane of the hydatid cyst.

Hexacanth embryo

Tapeworm eggs that are usually produced by taeniid-type tapeworms.

Proscolex

An early larval form of a cestode worm.

Neurologic larva migrans

A condition called by the migration of the larval stage of Baylisascaris procyonis through the brain and spinal cord of avian or mammalian paratenic hosts, including humans.

Cutaneous larva migrans

A skin disease in humans caused by the larvae of hookworm parasites that leave migratory tracks in the skin.

Egg packet

What is typically passed the feces in an animal invested with Dipylidium caninum when a gravid proglottid is ruptured during defecation.

Aberrant parasite

A parasite found in a location in which it does not normally live.

Otoacariasis

Investigation of the ear with mites.

Protozoan

A single cell organism.

Simian

Pertaining to or resembling an ape or a monkey.

Metacercaria

The infective stage of a digenic fluke.

Procercoid

The developmental stage in the life cycle of a pseudotapeworm that parasitize is the first intermediate host.

Germinal membrane

The innermost lining of a Hydatid cyst.

Pseudotapeworms

These members of the order Cotyloidea include Spirometra mansonoides.

Miracidium

The ciliated, motile stage that emerges from the operculated egg of a digenetic fluke.

Cercaria

The free swimming trematode larva that emerges from its host snail.

Dioecious

Denoting species in which male and female genitals do not occur in the same individual; sexually distinct.

Gynecophoric canal

A Ventral groove running the length of a male schistosome fluke into which the threadlike female worm fits.

Plerocercoid

The infective developmental stage that parasitizes the second intermediate host in the lifecycle of a pseudo-tapeworm.

Metacestode

The larval stage of a tapeworm.

Schistosome cercarial dermatitis

Sometimes referred to as swimmers itch.

Cyst

The noninfected stage of Giardia that is resistant to both heat and cold and to drying out.

Arthropod

Any animals of the phylum that includes insects, crustaceans, arachnids and myriapods.

Trematode

A fluke (flatworm)

Cysticercoid

The infective stage of the tapeworm.