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Parasitology
Homework 1
60
Veterinary Medicine
Undergraduate 2
01/16/2018

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Term
Abberrant parasite
Definition
Parasite that has wandered from its usual site of infection into an organ or location in which it does not ordinarily live
Term
Acanthocephalins
Definition
A thorny-headed worm
Term
Acaricides
Definition
Chemical compounds developed to kill mites and ticks
Term
Adulticide
Definition
Kill certain adult helminths
Term
Amicrofilaremic
Definition
Referring to the absence of immature filarial parasite
Term
Annelids
Definition
Earthworms
Term
Anthelmintics
Definition
Chemical compounds developed to kill roundworms, tapeworms, flukes, and thorny-headed worms; also called anthelminthics
Term
Antiprotozoals
Definition
Chemical compounds developed to kill protozoan organisms
Term
Arachnid
Definition
ticks, mites
Term
Ascarids
Definition
Kill arachnids (ticks, mites)
Term
Commensalism
Definition
Type of symbiotic relationship in which one symbiont benefits while the other neither benefits nor is harmed
Term
Common name
Definition
Non-scientific name for a living organism in different regions of the world; may refer to different organisms in different places
Term
Definitive host
Definition
Host that harbors the adult, sexual, or mature stage of the parasite
Term
Ectoparasite
Definition
Parasite that lives on the body of the host
Term
Endoparasite
Definition
Parasite that lives within the body of the host; an endoparasite produces an infection within that host
Term
Erratic parasite
Definition
Parasite that has wandered from its usual site of infection into an organ or location in which it does not ordinarily live
Term
Euryxenous parasite
Definition
Parasite with a very broad host range
Term
Facultative parasite
Definition
Organism that is usually free living (nonparasitic) in nature and develops a parasitic and use a host for their development
Term
Free-living parasite
Definition
Life cycle stage that does not require a host to survive
Term
Genus name
Definition
The group a particular type of animal, parasite, or plant belongs to
Term
Helminths
Definition
Parasitic worms
Term
Homoxenous parasite
Definition
Parasite that infects only one type of host; also called monoxenous parasite
Term
Host
Definition
In a parasitic relationship, the member in which or on which the parasite lives
Term
Incidental parasite
Definition
Parasite that is found in a host in which it does not usually live
Term
Infection
Definition
A condition caused by an endoparasite within the host's body
Term
Infestation
Definition
A condition caused by an ectoparasite outside or on the host's body
Term
Insecta
Definition
Flies (bots), lice, fleas
Term
Insecticides
Definition
Chemical compounds developed to kill insects
Term
Intermediate host
Definition
Host that harbors the larval, juvenile, immature, or asexual stages of the parasite. A parasite may have more than one intermediate host
Term
Larviparous
Definition
Type of female nematode that retains her eggs within the uterus and produces live first-stage larvae
Term
Life cycle
Definition
Development of a parasite through its various life stages. Every parasite has its own distinct, individual life cycles with at least one definitive host and may have one or more intermediate hosts
Term
Linnaean Classification Scheme
Definition
Classification for all living organisms (animal, plants,fungi, protozoa, and algae) perfected by Carl Linnaeus, an early Swedish biologist. Every living organism can be classified using the following scheme: kingdom, phylum, class, order, family, genus, and species
Term
Microfilaricide
Definition
Dewormer that kills the immature filarial worm
Term
Monoxenous parasite
Definition
A parasite that infects only one type of host
Term
Mutualism
Definition
Type of symbiotic relationship in which both organisms derive some benefit
Term
Nematode
Definition
Roundworms
Term
Obligatory parasite
Definition
Parasite that must lead a parasitic existence; most parasites of domestic animals are obligatory parasites
Term
Oviparous
Definition
Type of nematode egg that contains either a single cell or a morula, a grapelike cluster of cells
Term
Ovoviviparous
Definition
Type of nematode egg that contains a first-stage larva
Term
Parasite
Definition
An organism which lives on (ectoparasite producing infestation) or in (endoparasite producing an infection) another living organism (host) at whose expense it obtains some advantage
Term
Parasitiasis
Definition
Type of parasitic relationship in which the parasite is present on or within the host and is potentially pathogenic; however the animal does not exhibit outward clinical signs of disease
Term
Parasitosis
Definition
Type of parasitic relationship in which the parasite is present on or within the host and causes obvious injury or harm to the host animal; the host exhibits obvious outward signs of clinical parasitism
Term
Parasiticides
Definition
chemical compounds used to treat internal and external parasites
Term
Parasitology
Definition
The study of parasitic relationships
Term
Paratenic host
Definition
A host used for transport of a parasite. The parasite does not go through any developmental stages
Term
Pathogenicity
Definition
Disease-causing potential
Term
Periodic parasite
Definition
Parasite that makes frequent short visits to obtain nourishment or other benefits
Term
Phoresis
Definition
Type of symbiotic relationship in which the smaller member in the relationship is mechanically carried by the larger member
Term
Platyhelminthes
Definition
Trematodes & cestodes
Term
Protozoan parasite
Definition
Unicellular, or single-celled, organisms that may be flagellates, amoebae, sporozoans, apicomplexans, or cilates
Term
Pseudoparasite
Definition
Living creatures or inanimate objects that are not parasitic but may be mistaken for, or erroneously identified as, parasites
Term
Reservoir host
Definition
Vertebrate host in which a parasite or disease occurs in nature and is a source of infection for humans or other domesticated animals
Term
Scientific name
Definition
Name for a living organism that is composed of two Latin words, usually written in italics. The genus name (capitalized) indicated the group to which a particular type of animal or plant belongs; the specific epithet (lowercase) indicated the type of animal itself
Term
Specific epithet
Definition
The type of animal in a genus
Term
Stenoxenous parasite
Definition
Parasite with a narrow host range
Term
Symbiosis
Definition
Any association between at least two living organisms of different species
Term
Transport host
Definition
Special type of intermediate host in which the parasite does not undergo any development but instead remains arrested or encysted within the host's tissues
Term
Trematode
Definition
The flukes
Term
Vectors
Definition
An organism that transmits a disease or parasite from one animal to another
Term
Zoonosis
Definition
Any disease or parasite that is transmissible from animals to humans
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