Identify Flashcards
Eggs contain a larva when laid,
have a unique “ paper clip” shape
Spirocerca lupi
Esophageal worm
Thick-shelled egg that contains a larva when laid
Physaloptera species
Stomach worm
smooth outer shell, ground glass appearance to central portion
Ascarid
Toxocara canis
Similar to T. canis but slightly smaller
the egg on the left
Baylisascaris procyonis
Raccon roundworm
Thin- shelled egg with morula stage
Ancylostoma spp.
Hookworm
larvae are 280-310 um long w/ rounded anterior end and pointed tail
Thin-shelled larvated egg
Strongyloides spp.
Intestinal threadworms
Thick, symmetric shell w/opercula at both ends
Egg is unbembryonated
Trichuris spp. / Whipworm
T. vulpis
Microfilaria for female worm for diagnostic stage
Microfilaria w/ tapering anterior end and straight tail
wider at midbody than RBC
Dirofilaria immitis
Heartworm
Larvae have S-shaped bend in tail w/dorsal spine
Larva diagnostic stage
Aelurostrongylus abstrusus
Feline lungworm
Larvae have S- shaped bend in tail
Larva diagnostic stage
infective L1 larvae
Filaroides spp.
Canine lungworm
Baermann’s technique, Fecal flotation
Eggs are barrel-shaped, bipolar, yellow-brown w/pitted shell
Egg diagnostic stage
Dioctophyma renale
Canine giant kidney worm
centrifugation of urine and examination of urine sediment
Larva have distinctive esophagus
Larva, adult diagnostic stage
Rhabditis strongyloides
Free living soil nematodes
L1 larvae enter directly through the skin
skin scraping
Larva have distinct long tails
Larva diagnostic stage
Dracunculus insignis
Guinea worm
ingestion of intermediate host
Centrifugation of water sample and examination of sediment
Microfilaria of dirofilaria immitis
Ascarid ovum
Dipylidium ovum
Taenia-type ovum
Fluke ovum
Demotex mite
Sarcoptes mite
Coccidia oocyst
Strongyle- type ovum
