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50 Cards in this Set
- Front
- Back
wild animals serve as ______ of infectious agents to domestic animals
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reservoirs
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how can parasites flow from wildlife?
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arthropod vectors, contaminated food/water, thru environment, contact with wildlife host
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why is difficult to define parasites in wildlife
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access to wildlife, lack of info on hosts/geographical distributions, validation of diagnostic tests in wildlife
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angriostrongylus cantonensis
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rat lungworm. IH: snails/slugs. PH: crustaceans/amphibians.
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baylisascaris procyonis
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causes neuro disease in 90+ wildlife species
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plasmodium knowlesi
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macaques, malarial dz. Rare for it to switch to humans as a host, but humans can "Catch' the dz from infected macaques
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trypanosoma brucei
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3 subspecies- brucei, rhodesiense, gambiense. Gambiense associated with the emergence of HIV/AIDS
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sarcoptes scabiei
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transient, but there is slight risk for humans in contact with wildlife. Detrimental to red fox/coyote populations. Threat to endangered/isolated wildlife populations
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what does sarcoptes scabiei cause?
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intense pruritis accompanied by erythtmatous eruptions, papule ormation, seborrheoea and alopecia
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where does sarcoptes scabiei usually affect animals?
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elbow/hocks --> base of tail --> back and distal tail. Can be generalized or localized
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cryptosporidium spp.
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common in wildlife. Unsure of how wildlife are sources for humans/domestic animals
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giardia spp
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intestinalis, ardeae/psittaci, muris, agilis
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toxoplasma gondii
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toxoplasmosis in many wildlife species. Wild game is source of infection to humans/domestics
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trichinella spp.
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over 150 host species found worldwide. Well tolerated In wildlife
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paralaphostrongylus tenuis
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affects WTD in eastern NA. abnormal hosts include sheep, goats, llamas and other wild cervids. Clinical signs include rear leg weakness-ataxia, circling, incoordination, blindness, head tilt, emaciation, paralysis
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dermacentor albipictus
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ungulate hosts: moose, WTD, elk, mule deer, woodland caribou. Domestics: horse/cattle
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dermacentor albipictus clinical signs in moose
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characteristic hair loss- neck, shoulders, perianal region. Preoccupation with grooming and rubbing, emaciation
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fascioloides magna impact
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decreased moose calf survival, predisposing factor for wolf predation, reduce antler points, reduce buck fitness for WTD, reduced repro potential for WTD
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taenia
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canids, felids, and mustelids are DH, prey species are IH
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echinococcus
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e. granulosus most common, e. multilocularis most pathogenic
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anisakis
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parasitic nematode that affects fish. Highly infective to humans
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encephalitozoon cuniculi
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affects rabbits, rodents. Transmitted to humans through infected urine, organism is environmentally resistant. Causes neuro signs, renal disease
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parasites that affect exotic small mammals
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dirofilaria immitis, otodectes cynotis, psoroptes cuniculi, encephalitozoon cuniculi
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parasites that affect ornamental fish
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ichthyophthirius multifilis, lernaea, spp
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parasite that affects reptiles and amphibians
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ophionyssus natricis
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exotic companion bird parsites
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haemoproteus, leucocytozoon, plasmodium, knemidokoptes, heterakis, ascaridia
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dirofilaria immitis in ferrets
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life cycle somewhat similar to cats/dogs. L3 via mosquito, can reach heart within 70 d, worm burden of 1-21. most adults in cr and cd vena cava
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can ferrets be treated for HW?
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yes, but poor success rate, and off-label
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otodectes cyanotis in ferrets
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smelly, black/grey earwax, pruritis, oozing, cruesting, hair loss around head and neck. Treat with selamectin, ivermectin, imadacloprid/mocidectin- need to treat other pets in household as well
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trixacurus caviae
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sarcoptic mite of guinea pigs, clinical signs: pruritis, alopecia, erythema, thickened skin, self induced trauma, secondary bact infection.
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is trixacurus caviae zoonotic?
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yes
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signs of psoroptes cuniculi in rabbits?
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head shaking, scratching ears, crust in ear canal
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what other species can psoroptes cuniculi
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mild in sheep/goats
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treatment for psoroptes cuniculi?
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ivermecic SC every 2 weeks for 3 treatments, selamectin topically every month, mineral oil in ears
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what is encephalitozoon cuniculi?
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a fungus (microspordian) that parasitizes rabbits, infecting liver, kidney, brain and spinal cord
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signs of encephalitozoon cuniculi
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partial or complete paralysis, loss of coordination, seizures, head tilt, kidney failure, urinary incontinence, uveitis
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encephalitozoon cuniculi treatment
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fenbendazole for 28 days
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is encephalitizoon cuniculi zoonotic?
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yes, opportunistic in immunocompromised humans
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ichyophthirius multifiliis clinical signs
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small raised white nodules, fish scratching along rocks and gravel, lethargy, impaired respiration
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lernaea spp clinical signs
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white or red "Worms" attached to lesions, flashing, erythema at attachment site, lethargy, secondary bacterial infection
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why is anchorworm (lernaea) a misnomer?
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it Is actually a crustacean
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ophionyssus natricis
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snake mite
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what is leucocytozoon transmitted by
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black flies
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what is haemoproteus transmitted by
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hippoboscid flies
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what is plasmodium transmitted by?
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culex mosquitos
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what do leucocytozon, haemoproteus and plasmodium all cause?
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bird malaraia and malaria like hemoprotozoans of birds
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two ascarids of poultry and many wild birds
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heterakis and ascaridia
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where can knemidokoptes spp affect?
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mutans- leg; jamaicensis-legs, pilae- face/vent/legs
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signs of knemidokoptes spp?
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pruritis, pitting, scaly, crusty lesion, localized swelling of tissue, loose scales, thick and deformed legs
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knemidokopts treatment
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ivermectin every ten days for 4 treatments
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