Parasitology Lab Manual Flashcards
(54 cards)
Organisms in the phylum Nematoda are commonly called __________.
roundworms
The development stages in the life cycle of a nematode are _______, _______, and ________.
egg, four juvenile stages (J1, J2, J3, J4), and adult
A life cycle is considered _________ if no intermediate host is necessary for development to the infective stage.
direct
The primary ascarids that infect puppies and kittens are ______, ______, and _______.
toxocara canis, toxocara cati, and toxocara leonina
Adult Dirofilaria immitis are found within the _______, _______, and ________.
right ventricle, pulmonary artery, and the fine branches of the pulmonary artery
The prepatent period of D. immitis in dogs is approximately ________.
6 months
The ______ is the intermediate host for D. immitis.
mosquito
The microfilariae of _______nonpathogenic nematodes must be differentiated from those of D. immitis.
human filarial from
Tapeworms are dorsoventrally flattened and contain segments known as ________.
proglottids
A dog and cat becomes infected with the tapeworm _______ by ingesting the flea intermediate host.
Dipylidium caninum
The intermediate hosts for Taenia pisiformis are _______ and _______.
rabbits and hares
The tapeworm _______ ________ is the hydatid cyst tapeworm for dogs.
Echinococcus granulosus
Nanophyetus salmincola is commonly referred to as the ______ of dogs.
salmon poisoning fluke
The three primary phyla of parasitic protozoa are ______, _________, and _______.
apicomplexa, sarcomastigophora, and ciliphora
The term _______ refers to the motile, feeding stage of a protozoal parasite.
trophozoite
_______ is a protozoal parasite described as pear shaped and dorsoventrally flattened with four pairs of flagella.
Giardia
Infection with _________ manifests as infertility, spontaneous abortion, and pyometra.
Tritrichomonas foetus
Cats infected with _________ generally only shed oocysts for less than 2 weeks for their entire life.
Toxoplasma gondii
_____ are basophilic, pear-shaped trophozoites found in the red blood cells (RBCs) on stained blood smears.
Babesia
The _______ are a group of obligate intracellular gram-negative bacteria and transmitted by arthropod or helminth vectors.
Rickettsia
_______ can act as intermediate hosts for the common tapeworm, Dipylidium caninum.
Fleas and lice
The biting and chewing lice are in the order ______, and the sucking lice are in the order ________.
Mallophaga and Anoplura
Infestation by larval dipterans is referred to as _____.
myiasis
Immunodeficiency of the host is necessary for infestation with ______ mites to be clinically apparent.
demodex
