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Veterinaray Parasitology Basics
Broad overview of Veterinary Parasitology for VEM5150
46
Veterinary Medicine
Professional
11/22/2010

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Term
Parasite
Definition
The organism infecting the host
Term
Host
Definition
the animal infected with a parasite
Term
Final (Definitive) Host
Definition
A host in which sexual reproduction of the parasite occurs
Term
Intermediate Host
Definition
A host in which development, but not sexual reproduction of the parasite occurs
Term
Paratenic (Transport) Host
Definition
A host in which a sexually immature stage of the parasite resides for an extended period and can be transmitted to the next host but does not develop
Term
Mechanical Vector
Definition
An organism upon which a parasite hitches a ride between hosts for a short time without infecting the vector organism
Term
The Big Three Groups of Parasites
Definition
Protozoans, Helminths, Arthropods
Term
Four Types of Protozoa
Definition
Amoebas, Ciliates, Flagellates, Apicomplexans
Term
Amoebas Move...
Definition
Via Pseudopods
Term
Ciliates Move...
Definition
Via Cilia
Term
Flagellates Move...
Definition
Via Flagella
Term
Apicomplexans Use...
Definition
An Apical Complex to Penetrate Host Cells
Term
Protozoans Are...
Definition
Single Celled Parasites
Term
Helminths Are...
Definition
Worms
Term
Arthropods Are...
Definition
Organisms having a Chitinous Exoskeleton
Term
Three Types of Helminths
Definition
Nematodes, Platyhelminths, Acanthocephalans
Term
Nematodes Are...
Definition
Roundworms
Term
Platyhelminths Are...
Definition
Flatworms
Term
Tremaodes Are...
Definition
A type of Platyhelminth- Flukes
Term
Cestodes Are...
Definition
A type of Platyhelminth- Tapeworms
Term
Acanthocephalans Are...
Definition
Thorny Headed Worms
Term
Four Types of Arthropods
Definition
Insects, Acarines, Pentastomes, Crustacea
Term
Insects
Definition
Six legged adults, many kinds
Term
Acarines
Definition
Eight legged adults, ticks and mites
Term
Pentastome
Definition
Tongue Worms
Term
Example of Crustacea
Definition
Fish Lice
Term
Parasite (Nutritional Definition)
Definition
Creatures which find their nourishment and habitat on or in other living organisms
Term
Parasite (Pathological Definition)
Definition
Causes ill effects by living on or in the host
Term
Parasite (Ecological Definition)
Definition
Those animals that use other living animals as their environment and source of food at the same time relinquishing to their hosts partly or completely the task of regulating their relationships with their environment
Term
Symbiosis
Definition
Living Together
Term
Phoresis
Definition
Traveling together such as a barnacle attached to the shell of a sea turtle
Term
Commensalism
Definition
Eating at the same table, one benefits and the other is niether helped nor harmed such as the relationship between cattle egrets and cattle
Term
Mutualism
Definition
Reciprocally recieving and giving, members of the symbiosis benefit from the relationship such as cattle and their cellulose-digesting rumen flora and fauna
Term
Parasitism
Definition
One, the parasite, benefits at the expense of the other, the host
Term
Endoparasite
Definition
Lives inside the host
Term
Ectoparasite
Definition
Lives outside the host
Term
Obligate
Definition
Must live as a parasite
Term
Facultative
Definition
Normally lives free in the environment but can take up a parasitic mode of existence of circumstances permit
Term
Continuous
Definition
Always remains with the host
Term
Intermitent
Definition
May come and go from the host
Term
Hyperparasitism
Definition
Parasites infecting parasites, example, canine heartworms
Term
Parasitiasis
Definition
Infection by a parasite
Term
Parasitosis
Definition
The disease caused by a parasite
Term
Sylvatic Cycle
Definition
Involve parasites of wild animals infecting humans (zoonotic)
Term
Urban or Domestic Cycle
Definition
involve parasites of companion or food animals or of domestic pests such as rats and mice infecting humans (zoonotic)
Term
Two general methods for evolution of parasitism
Definition
Parasite Co-Evolved with the Host, The Parasite more recently Colonized the Host
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