Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Parasit: swine

QuestionAnswer
gongylonema pulchrum: phylum nematoda
gongylonema pulchrum: superfamily spiruroidea
gongylonema pulchrum: life cycle direct/indirect indirect
gongylonema pulchrum: IH dung beetles, cockroaches
gongylonema pulchrum: common name stitch worm
gongylonema pulchrum: where is it found on host? adult found in esophageal & lingual mucous membrane = characteristic grossly visible raised sinusoidal tracts
gongylonema pulchrum: importance condemnation of tongues for pickled pork tonuge
gongylonema pulchrum: LC embryonated eggs passed in feces & ingested by adult coprophagous beetles/larvae, worm larvae hatches, develops to L3; beetle ingested by DH; migrate stomach -> esoph mucosa, lays eggs as it goes
gongylonema pulchrum: ppp 8 wks
gongylonema pulchrum: control no treatment; prevent swine from consuming IH
ascarops strongylina: phylum nematoda
ascarops strongylina: superfamily spiruroidea
ascarops strongylina: direct/indirect LC indirect
ascarops strongylina: IH dung beetles
ascarops strongylina: paratenic hosts several, including rodents
ascarops strongylina: how are swine infected ingesting IH or PH containing l3 larvae
ascarops strongylina: infective stage L3
ascarops strongylina: where are adults found in host under gastric mucus layer on mucosal surface
ascarops strongylina: clinical effects gastritis, ulcers
ascarops strongylina: diagnosis? best at necropsy
physocephalus sexalatus: phylum nematoda
physocephalus sexalatus: superfamily spiruroidea
physocephalus sexalatus: direct/indirect LC indirect
physocephalus sexalatus: IH dung beetles
physocephalus sexalatus: how are swine infected ingesting IH containing L3 larvae
physocephalus sexalatus: infective stage L3
physocephalus sexalatus: where are they found in host adults live under gastric mucous layer on gastric mucosa
physocephalus sexalatus: clinical effect on host gastritis, occasional ulceration
superfamily spiruroidea: finding eggs don't float well; best recovered by sedimentatino
hyostrongylus rubidus: phylum nematoda
hyostrongylus rubidus: superfamily trichostrongyloide
hyostrongylus rubidus: indirect/direct LC direct
hyostrongylus rubidus: where are they found in pigs? stomach; adults live under gastric mucus layer on gastric mucosa & in gastric glands
hyostrongylus rubidus: what types of swine facilities are they most common in pastured pigs only
hyostrongylus rubidus: LC thin-shelled, segmented egg; embryonated form passed in feces; L3 ingested by pig, molt to L4/5 in mucosa
hyostrongylus rubidus: ppp 21 days
hyostrongylus rubidus: infective stage L3
hyostrongylus rubidus: hypobiosis? may lead to disase after removal from pasture; reactivate at parturition
hyostrongylus rubidus: repro product of female segmented egg
hyostrongylus rubidus: product passed in feces embryonated egg
hyostrongylus rubidus: pathology chronic wasting disease; larvae invade gastric glands: increased gastric pH, decreased plasma protein (like ostertagiasis in cow), gastritis, ulceration, anemia, anorexia, diarrhea, vomiting
PPRR periparturient relaxation of resistance: give birth = lose ability to immunologically resist nematode infections = increased eggs = increased larvae infective to piglets; important in hyostrongylus & oesophagostomum nematodes
hyostrongylus rubidus: Dx distinguish eggs from Oesophagostomum; fecal culture, develop to L3; larvae move rapidly
trichostrongylus axei: phylum nematoda
trichostrongylus axei: superfamily trichostrongyloidea
trichostrongylus axei: direct/indrect direct
trichostrongylus axei: where is it found in pig uncommon; stomach
trichostrongylus axei: clinical symptoms gastritis if in large numbers
ascaris suum: phylum nematoda
ascaris suum: superfamily ascaroidea
ascaris suum: distribution geographically worldwide
most economically important nematode of swine ascaris suum
ascaris suum: cross-infection hepatopulumonary migratino (liver to lung) when pigs/humans ingest infective eggs of each other's ascarid; doesn't usually produce infection
ascaris suum: LC direct/indirect direct
ascaris suum: transmammary/transplacental trans? neither
ascaris suum: repro product in feces egg single-celled, non-infective
ascaris suum: infective stage L2
ascaris suum: how is it in env't can live >5 years
ascaris suum: how to kill eggs drying, sunlight; flame, steam
ascaris suum: paratenic host bettle, earthworm
ascaris suum: LC L2 egg ingested, hatch in SI; molt to L3 in liver; hepatic-tracheal migration; coughed up, swallowed, final molts in SI
ascaris suum: ppp 6-8 weeks
ascaris suum: larval pathology host's immune response to antigenic excretory/secretory products of molting/migration; granulomas in liver become fibrotic (milk spot); lung hemorrhage, edema, WBC infiltration = pneumonia, bronchitis; secondary infection
ascaris suum: adult pathology damage mostly mechanical (large adults); reduced grwoth; may block bile/pancreatic ducts
ascaris suum: age of pig most infected young animals; resistant to reinfection after initial liver-lung migration
ascaris suum: mild disease cough, diarrhea, reduced weight gain, poor doer
ascaris suum: severe disease larval migration: exudate in lungs, cough, pneumonia, bronchitis, fatal
ascaris suum: control sanitation! all in, all out; flame/steam, high pressure hosing; treat sow before farrowing; eggs are sticky & resistant
globocephalus urosubulatus: phylum nematoda
globocephalus urosubulatus: superfamily ancyclostomatoidea
globocephalus urosubulatus: common name pig hookworm
globocephalus urosubulatus: geography worldwide
globocephalus urosubulatus: direct/indirect direct
globocephalus urosubulatus: clinical symptoms heavy infections may cause anemia; usually of minor importance
strongyloides ransomi: phylum nematoda
globocephalus urosubulatus: localization in swine small intestine
ascaris suum: localization in swine small intestine
strongyloides ransomi: superfamily rhabditoidea
strongyloides ransomi: geography worldwide
strongyloides ransomi: age most commonly affected young pigs
strongyloides ransomi: parasitic or free-living? both; only females are parasitic
strongyloides ransomi: repro product in feces larvated eggs
strongyloides ransomi: infective stage? how? L3, skin penetration of sweat glands / hair follicles
strongyloides ransomi: ppp 9 days after skin-tracheal migration; 4-6 days after transmammmary transmission
strongyloides ransomi: transmission/migration in naive host after skin penetration skin-tracheal migration; L3 travel venous system to lungs, molt to L4, up trachea, swallowed, pass to SI, final most
strongyloides ransomi: transmission/migration in resistant host after skin penetration skin-aortic migration; L3 migrate to lungs via venous system, don't molt, not coughed up; pass through lungs, heart, aorta -> disseminated to body tissues
strongyloides ransomi: ingestion of L3 from evn't - naive vs resistant host naive: L3 penetrate mouth -> venous system -> skin-tracheal migration; resistant: skin-aortic migratino
strongyloides ransomi: ingestion of L3 in colostrum ingest L3 larvae (had already undergone aortic migratino in sow); go to SI, develop to adults
strongyloides ransomi: pathology most severe in piglets up to weaning age; diarrhea, hemorrhagic; emaciation, stunting of growth; vomiting, anorexia, anemia; can be fatal
strongyloides ransomi: Dx thin-walled larvated eggs in fresh feces; baermann to ID hatched L1
strongyloides ransomi: control sanitation
macracanthorhynchus hirudinaceus: phylum acanthocephala
macracanthorhynchus hirudinaceus: common name thorny-headed worm
macracanthorhynchus hirudinaceus: mono- or dioecious dioecious
macracanthorhynchus hirudinaceus: body cavity? yes
macracanthorhynchus hirudinaceus: how do they resemble cestodes lack mouth & alimentary tract; pseudo-segmented
do pigs have adult tapeworms? no; probably macracanthorhynchus hirudinaceus if found in SI
macracanthorhynchus hirudinaceus: repro product of female acanthor in egg
macracanthorhynchus hirudinaceus: eggs in evn't resistant
macracanthorhynchus hirudinaceus: direct/indirect LC indirect
macracanthorhynchus hirudinaceus: IH larvae of june beetles/may beetles
macracanthorhynchus hirudinaceus: LC IH (larvae of beetle) ingests egg, acanthor burrows into body cavity, develops into acanthella, 3 months - becomes infective cystacanth; pig ingests beetle, proboscis embeds into SI wall, grow to maturity in 2-3 months
macracanthorhynchus hirudinaceus: ppp 9 weeks
macracanthorhynchus hirudinaceus: pathology feeds by absorption; local inflammation, abscess; heavy infection = ulceration, perforation
macracanthorhynchus hirudinaceus: clinical signs asymptomatic to severe, depend on # parasites; diarrhea; emaciation, anemia, abdominal pain
macracanthorhynchus hirudinaceus: diagnosis eggs in feces: sedimentation; womrs expessed in feces
macracanthorhynchus hirudinaceus: control raise pigs on concrete where beetle larvae cannot become infected
cystoisospora suis: phylum apicomplexa
cystoisospora suis: common name coccidia
cystoisospora suis: repro product passed in feces unsporulated oocyst
cystoisospora suis: form when sporulated 2 sporocytss each w/4 sporozoites
cystoisospora suis: direct/indirect lc direct
cystoisospora suis: age affected neonatal swine
cystoisospora suis: ppp 5 days
cystoisospora suis: where do merogony, gamogony, syngamy occur? gut epithelial cells (SI)
cystoisospora suis: pathology 20% of neonatal diarrhea in piglets 5-10 days old; villous atrphy in jejunum & ileum; diarrhea, dehyedration, emaciation; may be fatal; stunted growth
cystoisospora suis: infective stage sporulated oocyst
cystoisospora suis: control treat sows starting 2 weeks prior to farrowing; sanitation; solid immunity develops following exposure
eimeria: phylum apicomplexa
eimeria: type of protozoon coccidea
eimeria: repro product passed in feces unsporulated oocyst
eimeria: morphology when sporulated 4 sporocysts, each with 2 sporozoites
eimeria: infective stage sporulated oocyst
eimeria: age infected older animals = coccidiosis
eimeria: direct/indirect LC direct
eimeria debliecki: clinical signs diarrhea, not dysentery
most common eimeria of swine eimeria debliecki
eimeria debliecki: where is it located in swine SI
eimeria debliecki: ppp 7 days
eimeria debliecki: diagnosis clinical signs, history; oocysts in feces
eimeria debliecki: control sanitation, coccidiostats
eimeria scabra: importance most pathogenic eimeria coccidia of swine
eimeria scabra: where is it located in swine SI
eimeria scabra: clinical signs hemorrhagic enteritis
eimeria scabra: ppp 9 days
eimeria scabra: diagnosis clinical signs, history, oocysts in feces
eimeria scabra: control sanitation, coccidiostats
cryptosporidium parvum: phylum apicomplexa
cryptosporidium parvum: direct/indirect lc direct
cryptosporidium parvum: repro product in feces sporulated oocyst, infective
cryptosporidium parvum: age infected most ocmmon in 5-12 week old pigs; can occur in nursing piglets
cryptosporidium parvum: clinical signs diarrhea, ill thrift
cryptosporidium parvum: where are they found in pig SI; live on surface of epithelial cells that line gut (microvillus)
cryptosporidium parvum: zoonotic? possibly; other hosts - ruminants, horses humans
trichuris suis: phylum nematode
trichuris suis: superfamily trichuroidea
trichuris suis: geography worldwid
trichuris suis: common name whipworms
trichuris suis: location in host cecum
trichuris suis: direct/indirect direct
trichuris suis: repro product passed in feces egg, single-celled
trichuris suis: infective stage L1, embryonated egg; remain viable several years
trichuris suis: LC single-celled egg passed; L1 ingested, gatches in SI, larve molt in mucosa to adult (4 molts)
trichuris suis: ppp 6-7 weeks
trichuris suis: adult life span 4-5 months
trichuris suis: clinical signs req's large #s; diarrhea, anemia, anorexia; necrosis of caecal & LI mucosa; predisposed to other problems; signs 3 weeks after moving to infected premises (usually pasture); interferes w/growth; not a major pathogen
oesophagostomum dentatum, quadrispinulatum: phylum nematoda
oesophagostomum dentatum, quadrispinulatum: superfamily strongyloidea
oesophagostomum dentatum, quadrispinulatum: geography worldwide
oesophagostomum dentatum, quadrispinulatum: where is it located in swine LI
oesophagostomum dentatum, quadrispinulatum: importance nodules in intestinal wall; prevents use of intestine as sausage casing
oesophagostomum dentatum, quadrispinulatum: direct/indirect LC direct
oesophagostomum dentatum, quadrispinulatum: repro product in feces segmented eggs
oesophagostomum dentatum, quadrispinulatum: LC segmented eggs passed in feces, develop hatch, 2 molths in env't; L3 ingested, enter LI mucosa, nodule formation, emerge L4, molt to L5 in lumen
oesophagostomum dentatum, quadrispinulatum: infective stage L3
oesophagostomum dentatum, quadrispinulatum: how long do they spend in nodule primary infections - 2 weeks; sensitized host - months
oesophagostomum dentatum, quadrispinulatum: ppp 40-50 days
oesophagostomum dentatum, quadrispinulatum: clinical signs normally no effect; decreased grwoth rates; amage w/larval-induced reaction in intestinal wall interfering w/digestion, necrotic enteritis
oesophagostomum dentatum, quadrispinulatum: diagnosis fecal float; port mortem exam = nodules, adults; find eggs - incubate, distinguish from hyostrongylus rubidus
balantidium coli: phylum ciliophora
balantidium coli: kingdom protozoa
balantidium coli: geogrpahy worldwide; very common
balantidium coli: where is it found in pig colon, cecum
balantidium coli: 2 stages trophozoite: covered with cilia; cyst: infective, env'tally resistant; macronucleus & micronucleus in both
balantidium coli: LC direct/indirect direct
balantidium coli: how to trophozoites reproduce binary fission/conjugation
balantidium coli: hosts swine, man, primates, rarely dogs/cats
balantidium coli: pathology in swine normally nonpathogenic; potentially zoonotic; trophozoite - penetrate tissue, ulcers (secondary invaders); watery/hemorrhagic diarrhea; colitis, edematous congested mucosa; stunting of grwoth
balantidium coli: pathology in man/primates diarrhea, dysentery; lesions in intestine down to muscularis; uses dietary starch as food source
balantidium coli: control sanitation
liver flukes? 2 species fasciola hepatica, fascioloides magna
fasciola hepatica: common name common liver fluke
fascioloides magna: common name giant deer fluke
liver flukes: how common are they in swine very rare, except feral pigs living in swamps
liver flukes: control confine swine: prevent transmission; no effective drug approved for pigs
how is fascioloides magna infection similar to cattle? no eggs released into bile duct
liver flukes: necropy findings fasciola: within enlarged bile ducts; fascioloides: tracts of black pigment, flukes encapsulated in cysts
taenia hydatigena: class cestoda
taenia hydatigena: what stage is in swine larval sage only: cysticercus - translucent, fluid-filled cyst, single scolex
taenia hydatigena: geography worldwide
taenia hydatigena: IH pigs, ruminants
taenia hydatigena: DH canine
taenia hydatigena: direct/indirect host indirect
taenia hydatigena: LC dog (DH) passes gravid seg in feces, rupture, release eggs (embryophores), ing by IH; onchospheres released in intestine, burrow through wall, carried to liver via portal system; enter peritoneal cavity, attach to mesentery, develop into cysticercus
taenia hydatigena: clinical signs rarely any, if any, related to liver damage
taenia hydatigena: diagnosis necropsy, identification of cysticercus in abdominal cavity
taenia hydatigena: treatment & control no Tx for pig, treat dogs for adult tapeworms; avoid allowing pigs to eat infected dog feces
taenia hydatigena: importance liver condemnation - economic loss
echinococcus granulosus: class cestoda
echinococcus granulosus: stage in pigs? larval only - hydatid cyst (opaque, think-walled, fluid-filled) may be sterile or contain protoscolices w/in brood capsules
echinococcus granulosus: IH pigs, ruminants, horses, man
echinococcus granulosus: DH canids only
echinococcus granulosus: LC direct/indirect indirect
echinococcus granulosus: LC eggs contain onchospheres, released from proglottids shed by dog; pig eats egg, onchosphere travels from SI via portal vein, hydatid cyst in liver or lung; dog infected by eating hydatid cyst
echinococcus granulosus: importance liver condemnation; public health - eggs from canids can infect humans
echinococcus granulosus: clinical signs related to space-occupying lesion of liver/lung
echinococcus granulosus: treatment, control don't let swine or other IH eat dog feces; sanitation, clean up dog feces; deep dogs uninfected - limit access to infected meat
metastrongylus spp: phylum nematoda
metastrongylus spp: superfamily metastrongyloidea
metastrongylus spp: geography worldwide
metastrongylus spp: common name lungworms
metastrongylus spp: repro produced by female embryonated eggs
metastrongylus spp: LC direct/indirect indirect
metastrongylus spp: LC larvated eggs passed in feces, ingested by earthworm, L3 develop, pig ingests worm, lymphatic tracheal migration, adults in bronchi/bronchioles; eggs coughed up, swallowed, shed
metastrongylus spp: IH earthworm
metastrongylus spp: infective stage L3 in earthworm
metastrongylus spp: ppp 4 weeks
metastrongylus spp: clinical signs respiratory signs, pulmonary exudate/inflammation; consolidation of lungs from infiltrate, lymphoid hyperplasia, vesicular emphysema, cough (all progressive); usually almost asymptomatic
metastrongylus spp: age usually affected young pigs
metastrongylus spp: diagnosis larvated eggs after 3-4 wks PI; cough; metastrongyloidea in other hosts pass L1 larvae; post mortem exam
metastrongylus spp: treatment, control do not allow pigs to contact soil
metastrongylus spp: importance assoc w/other respiratory diseases; vector for swine influenza; enhances pathogenicity of most respiratory agents; interfere w/growth & feed conversion
stephanurus dentatus: phylum nematoda
stephanurus dentatus: superfamily strongyloidea
stephanurus dentatus: common name swine kidney worm
stephanurus dentatus: what type of swine is mainly affected feral swine
stephanurus dentatus: geography N/A america; asea, ussr, s africa, australia
stephanurus dentatus: location in host perirenal fat, liver, abdominal cavity; can be found in spinal canal or abscessed lesions in spleen, lung, pancreas, loin m
stephanurus dentatus: LC direct/indirect direct
stephanurus dentatus: infective stage L3
stephanurus dentatus: transmission orally, percutaneously, paratenic host (earthworm)
stephanurus dentatus: problem w/migrating larava may enter pregnant uterus & cause prenatal infection
stephanurus dentatus: migration to liver with oral transmission gastric mucosa (molt to L4), intestine - hepatic portal vein - liver
stephanurus dentatus: migratino to liver with percutaneous transmission molt to L4 - skin - venous syst - heart - lungs - heart - aorta - liver
stephanurus dentatus: LC - liver+ L4 wanders in liver (3-9 mo's), penetrate capsule, wander in peritoneal cavity to perirenal area, molt to L5; develop in cysts w/connecting channels to lumen of ureter, release eggs, shed in urine
stephanurus dentatus: ppp 9-16 months
stephanurus dentatus: clinical signs often related to aberrant migrations: spinal cord (paralysis), loin mm (abscesses), lungs, spleen, pancreas; liver damage, obstruction of portan vein, cirrhosis; reduced growth rate, anorexia, emaciation
stephanurus dentatus: diagnosis clinical signs; eggs in urine; post mortem; feral pigs - posterior paralysis
stephanurus dentatus: control breed gilts only, slaughter after 1st litter is weaned = no contamination of pasture; larvae in pastures viable 3-5 months; larvae in earthworms viable many months - pastures = continual source of infection; wash floor; confinement rearing
trichinella spiralis: phylum nematoda
trichinella spiralis: superfamily trichuroidea
trichinella spiralis: geography worldwide
trichinella spiralis: where are the adults found in swine? small intestine; rarely seen
trichinella spiralis: diagnostic stage encysted larvae; in straited muscles
trichinella spiralis: hosts most mammals (carnivores & cannibals)
trichinella spiralis: females vivi or oviparous viviparous
trichinella spiralis: importance potential public health problem
trichinella spiralis: direct/indirect life cycle direct
trichinella spiralis: LC L1 encapsulated in striated m, ingested by carnivore, grow to adult in SI, F moves to mucosa, lay L1, carried to mm, encapsulation
trichinella spiralis: how long do adults survive in SI 6 weeks
trichinella spiralis: life cycle length 7 weeks
trichinella spiralis: how long can larvae survive in muscle years
trichinella spiralis: epidemiology uncooked garbage important source; cannibalism; rats are reservoir; sylvatic cycles
trichinella spiralis: clinical signs in swine none
trichinella spiralis: clinical signs in humans enteritis, vomiting; edema, headache, photophobia, eosinophilia; muscular pain, myocarditis, meningoencephalitis; can be fatal
trichinella spiralis: Dx serology, trichiniscope
trichinella spiralis: control / treatment adult susceptible to most anthelminics; time temperature tables for cooking/drying/freezing to kill larvae; rid premise of rats; prevent canibalism
taenia solium: class cestoda
taenia solium: order cyclophylidea
taenia solium: phylum platyhelminthes
taenia solium: life cycle direct/indirect indirect
taenia solium: DH man (adult in SI)
taenia solium: IH swine (cysticercus in muscle)
taenia solium: aberrant IH man & other hosts - have cysticercus in tussues, often in CNS
taenia solium: geography worldwide
taenia solium: common name pearly pork, pork measles
taenia solium: what stage is in swine larval only (cysticercus) - small, translucent, fluid-filled cyst, single scolex
taenia solium: LC eggs/proglottid ingested by pig; onchosphere released in pig intestine, burrow through wall -> blood -> muscle; cysticercus in m (jaw, tongue, heart, diaphragm); human ingests infected meat - develop to adult in SI
taenia solium: public health importance human can be IH if eggs ar eingested; aberrant migration of cysticercus to CNS = neurocysticercosis
taenia solium: clinical signs none in pig; CNS disturbance in man, fatal; mild to intermittent digestive disorders (adult worm in SI of infected human)
taenia solium: control modern toilets, wash hands; cook pork thoroghly; wash cooking utensils
Spirometra mansonoides: class cestoda
Spirometra mansonoides: order pseudophylidea
Spirometra mansonoides: phylum platyhelminthes
Spirometra mansonoides: shapes of segments mature & gravid segmentsw wider than long
Spirometra mansonoides: what is on scolex 2 elongate grooves (bothria), organs of attachment
Spirometra mansonoides: LC direct/indirect indirect
Spirometra mansonoides: DH felid, canid, raccoon;
Spirometra mansonoides: common name bob cat tapeworm
Spirometra mansonoides: where is it found in DH SI
Spirometra mansonoides: IH first: copepods (procercoid larval stage); 2nd: amphibians, reptile, swine, human, rodetns (plerocercoid larval stage)
Spirometra mansonoides: PH frogs, snakes, swine, humans; infected with plerocercoid aquired from 2nd IH
Spirometra mansonoides: plerocercoid sparganum; white ribbon-like larvae; coiled in nodules in subQ tissue & muscle fascial planes & peritoneal cavity
Spirometra mansonoides: disease in humans sparganosis
Spirometra mansonoides: how ar ehumans infected drinking water containing infected copepods, eating uncooked plerocercoides or penetration of mucus membranes wounds by plerocercoids
Spirometra mansonoides: LC egg passed in feces of DH; hatch in water, rlease ciliated coracidium, ingested by copepods, Cyclops; procercoid develops in Cyclops, vertebrate host consumes cyclops; plerocercoid develops in 2nd IH, infective to PH or DH; develop to adult in SI of DH
Spirometra mansonoides: public health humans get sparganosis if ingest poorkly cooked meat; most plerocercoids found subcutaneous but can also be in abdominal cavity; found in high % feral pigs slaughtered for export in FL, TX
sarcocystitis: kingdom protozoa
sarcocystitis: phylum apicomplexa
sarcocystitis: LC direct/indirect indirect
sarcocystitis mieschariana: DH/IH DH canid, raccoon; IH swine
sarcocystitis porcifelis: DH/IH DH cat, IH swine
sarcocystitis suihominis: DH/IH DH man/primates, IH swine
sarcocystitis: what stage is found in endothelial cells of swine? meronts, rarely
sarcocystitis: what stage is found in muscle of IH cysts containing bradyzoites
sarcocystitis: infective stage mature cysts (ifective to DH)
sarcocystitis: life cycle DH infected by ingesting cysts from IH muscle; intestinal tract of DH - gametogony, syngamy, sporogony; oocyst wall ruptures - release sporocysts, ingested by IH, merogony in vasc endoth, reach m & form cysts (bradyzoites in cyst)
sarcocystitis: clinical signs rarely seen in pigs; abortions, poor grwoth rate; diarrhea in man
sarcocystitis: Dx post mortem, histopath
sarcocystitis: control prevent cats/dogs/ppl from defecating around pig feed
toxoplasma gondii: kingdom protozoa
toxoplasma gondii: phylum apicomplexa
toxoplasma gondii: indirect/direct LC indirect
toxoplasma gondii: DH cat; only host which produces oocysts
toxoplasma gondii: IH rodents, swine, ruminant, man, many mammals/birds
toxoplasma gondii: stages in swine tachyzoites, bradyzoites (cyst stage)
toxoplasma gondii: how serious is it in swine not very serious pathogen
toxoplasma gondii: transmission to swine IH infected by ingestion of oocysts, ingestion of cysts from tissue of other infected IH
toxoplasma gondii: public health zoites in tissues; pork may be most common source of human infection in US
toxoplasma gondii: control cook pork well; wash hands & cooking utensils
sarcoptes scabiei: species astigmatid mite (deep burrowing)
sarcoptes scabiei: etiologic agent of what? sarcoptic mange
sarcoptes scabiei: which stages on host all stages
sarcoptes scabiei: LC F tunnel into epidermis, deposit eggs; eggs hatch, larvae move to skin surface, develop to nymph, adult, mate
sarcoptes scabiei: length of cycle 2 weeks
sarcoptes scabiei: how is it spread direct contact
sarcoptes scabiei: cna it survive off host <2 days
sarcoptes scabiei: how does it spread amongst pigs? direct contact; ocmmonly sow to piglets
sarcoptes scabiei: zoonotic? potbellied pigs & owners may share infestation
sarcoptes scabiei: pathology digestive enzymes used to liquefy host skin = hypsersensitivity, pruritus, self-mutilation; skin thickened/scab/crack; secondary bacterial dermatitis; does NOT self-cure; reduce growth, feed efficiency
sarcoptes scabiei: site of predilection on host ear; may progress over rest of body
sarcoptes scabiei: diagnosis skin scraping: edge of several active lesions, draw capillary blood, oil to keep material together, get sufficient material
sarcoptes scabiei: treatment/control isolation, drugs, treat sow before farrowing & keep piglets isolated; once eliminated from herd, quarantine all new pigs
demodex phylloides: species prostigmatid mite
demodex phylloides: where does it live hair follicles, sebaceous glands
demodex phylloides: # legs on nymph/adult/larvae nymph/adults: 4 pair; larvae: 3 pair
demodex phylloides: what stages on host all stages
demodex phylloides: life cycle live in collicles (generation pd 3 wks); initially lives on face, then lesions appear on abdomen & groin
demodex phylloides: pathology pustules; no marked pruritus or other serious affliction
demodex phylloides: Dx finding typical Demodex mites in material expressed from nodules
demodex phylloides: importance only a small % of pigs have nodules; these should be considered immunodeficient & slaughtered
hematopinus suis: species louse (sucking louse)
hematopinus suis: common name hog louse
hematopinus suis: life cycle eggs attached to base of bristles, nymphs hatch & molt 3 times; adult lays eggs (generation pd 4-5 wks)
hematopinus suis: how does it do off host cannot live & reproduce off host
hematopinus suis: how is it spred DC
hematopinus suis: zoonotic? more likely than other lice to be temporary zoonosis
hematopinus suis: pathology frequent blood feeders; self-mutilation; lose condition; suspect as vectors of swine pox & eperythrozoonosis (Mycoplasma haemosuis)
hematopinus suis: where is it found on host ears, neck, tail base, groin, axilla
hematopinus suis: control ivermectin; sprays need to treat every inch of skin surface; otehr drugs
tunga penetrans: species siphonaptera (flea); burrowing
tunga penetrans: geography torpical america, africa
tunga penetrans: common name jigger, chigoe
tunga penetrans: where is it found on body female penetrates under skin of feet of pigs & people
tunga penetrans: importance secondary infectious agents may cause damage, gangrene, mastitis
pulex spp: species siphonaptera (flea)
pulex spp: importance transmission of disease-causing agents such as plague to swine/in contact mammals?
diptera: species flies
diptera: specific spp of importance stomoxys calcitrans (stable fly), musca domestica (house fly), tabanus spp (horse fly), chrysops spp (deer fly), mosquitoes, simulium spp (black fly)
diptera: LC complete metamorphosis; egg - larva - pupa - adult
diptera: where does stomoxys breed decaying organic material
diptera: where does musca breed decaying organic material
diptera: where does tabanus breed moist soil
diptera: where does chrysops breed moist soil
diptera: where do mosquitoes breed water
diptera: where do simulium breed water
diptera: what do they feed on blood (all except musca)
diptera: pathology annoyance; disrupt feeding, reduce weight gain, allergic reacion; disease transmission - eperythrozoonosis Mycoplasma haemosuis
diptera: disease transmittd mycoplasma haemosuis
diptera: control remove breeding area, wet feed, manure, standing water; enclose animals in screened housing; space & residual sprays of insecticide
Created by: shelbell8389