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wcc parasites
wcc general parasite terms
| term | Definition |
|---|---|
| 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
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