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17 Cards in this Set
- Front
- Back
cysticercus
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bladderworm
vertebrates large vesicle with scolex inside and appears inside out -taenia |
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cystercoid
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invertibrates
vesicle with scolex not turned inside out -moniezia |
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strobilocercus
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vertebrates
envaginated scolex connected by strobila to small bladder -taenia taeniaformis |
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coenurus
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vertebrates
large cyst with a number of scolices which develop on its wall |
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hydatid cyst
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large cyst with small cysts (brood capsules) each with a number of scolices all found inside
echinoccocus granulosis |
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tetrathyridium
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elongated larva with a solid body and invaginated scolex
-mesocestoides spp |
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diphyllobothrium latum
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fish psuedotapeworm
small intestine DH-dogs, cats, bear, fox, carnivores that each fish, man -ciliated coracidium Fish IH -coracidium develops to plerocercoid and is ingested by DH Dx-operculate eggs on fecal sedimentation -hexacanth embryo -praziqantel -common far north and great lakes region |
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dipylidium caninum
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flea tapeworm of dogs and cats
cucumber seed segments in feces -egg packets in feces with embryonated eggs with oncosphere -small intestine dogs, cats, humans flea IH more pathogenic in fleas--weak, slugglish and die |
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echinococcus
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5 or less segments
very large cysts severe zoonotic potential only last segment is gravid |
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echinococcus granulosus
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hydatid cyst
small intestine IH-cattle, sheep, moose, elk, deer and occasionally humans DH-dogs and wild canids -eggs infective immediately when shed in feces -c/s in IH-hydatid cysts - |
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echinococcus multilocularis
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alveolar hydatid cysts
MOST SERIOUS ZOONOTIC HELMINTH small intestine IH-field mice, deer mice, ground squirrels, cattle, horses, swine, sheep and humans DH-foxes and coyotes usually fox-rodent relationship infected eggs shed in feces oncosphere penetrate liver |
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taenia pisiformis
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dog-rabbit cycle
can grow up to 2m in length small intestine cysticercus metacestode if severe may see diarrhea, constipation, gas, vomiting and weightloss -gravid segments in stool samples fecal flotation adults in intestine at necropsy |
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taenia taeniaformis
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most common in cats
IH-mice, rats and rabbits cysticercus metacestode can cause unthrifitness, depression, irritability, poor coat, colic adn mild diarrhea segments around anus, fecal floatation |
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taenia solium
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pork tapeworm
DH-human, pig, dog cysticercus found in skeletal and cardiac muscle and occasionally nervous system measly pork CS-depend on location of cysticercus in IH-blindness, seizures, CNS problems Praziquantel |
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taenia saginata
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DI-humans
IH- cattle, buffalo, giraffe and llama -cysticercus in skeletal (esp masticatory) and cardiac muscle of cattle cattle infected by ingesting eggsin human feces |
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moiezia spp
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cattle and sheep
expansa-sheep benedeni-cattle small intestine IH-orbitad mites (grass mites) cysticercus ingested by mite and develops 6-16 weeks in the mite |
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anoplocephala spp
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perfoliata-horses
lives in cecum and ileum -ulceration and inflammation, diarrhea orbatid mite IH cysticercoid takes 2-4 months to develop heavy infections-chronic unthriftiness, intermittent colic and diarrhea eggs look like moniezia |