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wcc parasites

wcc general parasite terms

parasitology sutdy of organisms which are metabolically dependent on other species
parasite organism that lives within, upon, at the expense of other organism
pseudoparasite false, dust pollen etc.
spurious parasite infects a host that is not its normal host (accidental)
host organism parasite obtains nourishment
intermdediate host undergoes a stage in its devel but does not reach sex maturity
bilogical vector body the parasit devel or multiplies in before becoming infective
mechanical vector temporary host, transports, does ot develop
helminth organism belonging to the Phyla Platyhelminthes, acanthocephala, nemathelminthes, annelida (may be freeliving or parasitic)
phyla Platyhelminthes flatworms
acanthocephalia spiny headed worms
nemathelminthes threadworms, roundworms
annelida segmented worms
anthelminthic, anthelmintic agent that destroys parsisitic intestinal worms
prepatent period devel stage in an infection before agent shows prescence
patent period open period, stage where agent produces evidence of prescence
acariasis, acarinosis, acaridiasis disease caused by mites
ascariasis disease caused by ascarid
ascarid mites and ticks
myiasis disease caused by an infestaion of maggots (fly larvae)
McMaster Tech quantitative tech for cntg parsite eggs in ruminant feces, floatation of cnctrtd salt
Baermann Tech lab method for separating parasite larvae from feces, soil or plant growth
Ext Paras - Fleas desc 1500 known species, ctenocephalides felis, ctenocephalides canis. have preferred host but alternate, laterally flattened, enlarged 3rd leg
Fleas cycle flea -- egg -- larvae -- papae -- adult dev off host, cocoon, emerge 5 days to 4 wks later
Fleas Dx visual sighting, dirt, eggs and larvae; pruritis
Fleas Tx adulticides; Advantage, Advantix, Frontline, revolution, capstar--IGR's lufenuron
Ext paras - Bot Flies Bot flies; Gasterophilus sp. horses, eggs can be seen attached to hairs
bot flies - cycle eggs attached to haris - hatch, larvae crawl to mouth and are swalloed, buorrow into mucosa, attach to stomach wall, thur feces where they becom adult
bot flies Dx lesions of the lip nose or stomach, oral/gastic ulceration
bot flies Tx remove from hair, Ivermectin
ectoparasite living on the surface of the host's body
endoparasite lives within the host's body
transplacental penetration of the placenta by an organism, toxin, or chemcial that could affect a fetus
prenatal before birth
transmammary trans of organism, toxin, or chemical from mother to young via milk
proglottid one segment making up the body of the tapeworm
scolex attachement organ of a tapeworm, located at the anterior end
hydatid cyst formed in tissues resulting from the dev of certain tapeworms, may grow to enourmous size
microfilaria larva of worms in the superfamil Filariodea, found in bld or tissues of animcal infected with adult worms
trophozoite acivte motile feeding stage of flagellate protozoa such as Giardia spp.
oocyst resistant stage of the life cycle of coccidial parasites, can survive long periods, can mature and become infective
Created by: wccvettech