Companion Animal Parasitology Flashcards

Vocabulary flashcards generated from the parasitology lecture notes.

CAPC

Companion Animal Parasite Council

Definitive Host

Host that harbors adults, mature, and sexual stages of a parasite

Intermediate Host

Host that harbors larval, immature, asexual stages of a parasite

Paratenic Host

Host that harbors a parasite, where no further development occurs

Diagnostic Stage

Stage at which an organism can be detected

3rd Larval Stage

Most common infective stage

Direct Life Cycle

Life cycle with no intermediate host

Indirect Life Cycle

Parasite life cycle stated in transcript as having no intermediate host

Prepatent Infection

Infection stage before the infection can be detected

Patent Infection

Infection that can be detected by symptoms or the ability to test for the infection

Eucestodes

True Tape Worms

Cestodes

Adult Tape Worms

Scolex

Head of a tapeworm

Neck (Tapeworm)

Short undifferentiated tissues of a tapeworm

Strobila

Body of a tapeworm, composed of proglottids

Immature Proglottids

Proglottids closest to the head of a tapeworm

Mature Proglottids

Sexually mature proglottids of a tapeworm

Gravid Proglottids

Proglottids that break off and pass out of the body

Dipylidium caninum

Scientific name for common tapeworm of dogs and cats transmitted by fleas

Primary Hosts of Dipylidium caninum

Dogs, cats

Intermediate Host of Dipylidium caninum

Flea

Transmission of Dipylidium caninum

Transmitted by the dog or cat ingesting the flea

Detection Sites for Dipylidium caninum Proglottids

Found in stool, bedding, and anal area

Taenia taeniaeformis

Scientific name for tapeworm whose intermediate host is rodents

Intermediate Host of Taenia taeniaeformis

Rodents

Transmission of Taenia taeniaeformis

Transmitted by ingesting rodents

Echinococcus granulosus

Scientific name for tiny tapeworm of dogs causing hydatid cysts

Primary Host of Echinococcus granulosus

Dogs

Proglottid Composition of Echinococcus granulosus

One mature, one immature, and one gravid proglottid

Clinical Condition Caused by Echinococcus granulosus

Causes hydatid cysts and is zoonotic

Echinococcus multilocularis

Scientific name for tiny tapeworm whose primary host is cats

Primary Host of Echinococcus multilocularis

Cats

Pseudo Tapeworms

Group of tapeworms that includes zipper tapeworms such as Spirometra Sp.

Spirometra Sp.

Scientific name for Zipper Tapeworms

Trematodes

Unsegmented and leaflike parasites that usually have a mollusk as an intermediate host

Common Intermediate Hosts of Trematodes

Mollusk (snails and slugs)

Platynosomum fastosum

Scientific name for Lizard Poisoning Fluke

Primary Host of Platynosomum fastosum

Cats

Intermediate Host of Platynosomum fastosum

Lizard

Nanophyetus salmincola

Scientific name for Salmon Poisoning Fluke

Primary Host of Nanophyetus salmincola

Dogs

Intermediate Host of Nanophyetus salmincola

Fish

Geographic Region of Nanophyetus salmincola

Found in Pacific northwest

Disease Vector Role of Nanophyetus salmincola

Serves as vector for elkomin fluke fever

Heterobilharzia americanum

Scientific name for Blood Fluke

Primary Host of Heterobilharzia americanum

Dogs

Intermediate Host of Heterobilharzia americanum

Snail

Anatomical Site Parasitized by Heterobilharzia americanum

Mesenteric veins of small and large intestines

Paragonimus kellicoti

Scientific name for Lung Fluke

Primary Hosts of Paragonimus kellicoti

Dogs, cats

First Intermediate Host of Paragonimus kellicoti

Snail

Second Intermediate Host of Paragonimus kellicoti

Crayfish

Anatomical Infection Site of Paragonimus kellicoti

Infests bronchioles and lungs

Fasciola hepatica

Scientific name for Liver Fluke

Economic Significance of Fasciola hepatica

Greatest economic importance of any fluke in veterinary medicine

Nematodes

Roundworms – Most infect intestines

Toxocara canis

Scientific name for canine roundworm causing visceral larval migrans

Primary Host of Toxocara canis

Dogs

Life Cycle of Toxocara canis

Direct life cycle

Human Health Concern of Toxocara canis

Zoonotic, causes Visceral larval migrans

Toxocara cati

Scientific name for roundworm found in cats

Toxocara leonina

Scientific name for roundworm found in cats

Baylisascaris procyonis

Scientific name for raccoon roundworm

Primary Host of Baylisascaris procyonis

Raccoons

Pathology Caused by Baylisascaris procyonis

Visceral or neural larval migrans

Parascaris equorum

Scientific name for roundworm found in horses

Primary Host of Parascaris equorum

Horses

Ascaris suum

Scientific name for roundworm found in pigs

Primary Host of Ascaris suum

Pigs

Dirofilaria immitis

Scientific name for Canine Heartworm

Primary Hosts of Dirofilaria immitis

Dogs, Cats, Ferrets

Intermediate Host of Dirofilaria immitis

Mosquitos

Vascular Importance of Dirofilaria immitis

Most important parasite of the vascular system in domestic animals

Prepatent Period of Dirofilaria immitis

6 months

Anatomical Location of Adult Dirofilaria immitis

Right ventricle

Microfilaria Morphology of Dirofilaria immitis

Tapered at both ends

Diagnostic Test for Dirofilaria immitis Microfilaria

Modified Knott's test

Acanthocheilonema reconditum

Subcutaneous filariid of dogs that produces microfilaria in blood

Primary Host of Acanthocheilonema reconditum

Dogs

Microfilaria Tail Morphology of Acanthocheilonema reconditum

Blunt at tail ends

Strongyle Type Eggs

Eggs where only females are parasitic and infect the intestines

Lung Worms (Nematodes)

Adults found in bronchi, eggs coughed up and swallowed then hatch in intestines

Diagnostic Finding for Lung Worms

Larva found in the feces

Pearsonema plica

Scientific name for Bladder Worm (Capillaria)

Capillaria

Alternative name associated with Pearsonema plica (Bladder Worm)

Dioctophyma renale

Scientific name for Kidney Worms

Primary Host of Dioctophyma renale

Dogs

Organ Impacted by Dioctophyma renale

Infects and destroys the tissue of the right kidney

Thelazia californiensis

Scientific name for Eye Worms with adults in conjunctival sac

Location of Thelazia californiensis Ova and Larvae

Found in lacrimal secretions

Location of Adult Thelazia californiensis

Conjunctival sac

Thelazia rhodesii

Scientific name for Eye Worm species

Thelazia gulosa

Scientific name for Eye Worm species

Haemonchus contortus

Scientific name for Barber Pole Worm

Primary Host of Haemonchus contortus

Ruminants

Clinical Significance of Haemonchus contortus

Deadly resistant nematode of ruminants

Ancylostoma

Genus of Hookworms

Ancylostoma caninum

Scientific name for Canine Hookworm

Primary Hosts of Ancylostoma caninum

Dogs, Cats

Life Cycle of Ancylostoma caninum

Direct life cycle