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18 Cards in this Set
- Front
- Back
- 3rd side (hint)
Taenia pisiformis
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Scolex with armed rostellum, 4 suckers; rectangular proglottids, Ova: spherical, striated shell
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General Taeniidae pattern: Gravid proglottids passed in feces > ova disseminated in environment by motile proglottid > intermediate, Cysticercus in liver/mesenteries of intermediate host (6-8w) > ingested by definitive > SI
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Taenia taeniaformis
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Scolex with armed rostellum, 4 suckers; rectangular proglottids, Ova: spherical, striated shell
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Strobilocercus in liver of intermediate host > ingested by definitive host > SI
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Taenia ovis, hydatigena, multiceps
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Scolex with armed rostellum, 4 suckers; rectangular proglottids, Ova: spherical, striated shell
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Larval tapeworms (Cysticercus): Ovis = striated /cardiac mm, Hydatigena = liver (also swine), Multiceps = brain (also cattle, cats; asexual repro larval stage)
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Taenia saginata
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Scolex w/ 4 suckers, lacks hooks; rectangular proglottids
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Larval tapeworm (Cysticercus bovis): in striataed/cardiac mm, ingested by definitive host > SI
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Taenia solium
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Scolex has 4 suckers, hooks; rectangular proglottids
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Larval tapeworm (Cysticercus cellulosae): in striated/cardiac mm, Humans directly ingest ova (self-infection) > aberrant migration of cysticerci > ocular, neuro, muscle dz
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Echinococcus granulosus
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"3 segment tapeworm" V. small. Scolex with armed rostellum, 4 suckers, strobila 3-4 proglottids w/ unilateral pores, Egg spherical, radiations in shell, hexacanth
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Larvae: Unilocular hydatid cyst; one big cyst with multiple dots, each dot = tapeworm
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Echinococcus multilocularis
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V. small. Scolex with armed rostellum, 4 suckers, strobila 3-4 proglottids w/ unilateral pores, Egg spherical, radiations in shell, hexacanth
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Multilocular (alveolar) hydatid cyst, various organs; like tumor
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Dipylidium caninum
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Most common tapeworm of dogs and cats, Scolex w/ rostellum and 4 suckers, Oval proglottids, not overlapping
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Cysticercoid stage in hemocoel of arthropod, Flea feeds on detritus/debris containing eggs > dog ingests flea
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Anoplocephala perfoliata
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Scolex with unarmed rostellum, 4 suckers, Short, wide proglottid, Ovum = letter D
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Gravid proglottids released but EGGS passed in feces; Cysticercoid larval stage
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Anoplocephala magna
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Scolex with unarmed rostellum, 4 suckers, Short, wide proglottid, Ovum = letter D
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Moniezia spp
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Scolex w/ 4 suckers; short, wide proglottid, Ovum = diamond
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Cysticercoid larva stage
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Thysanosoma actinoides
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Proglottids with fringe on posterior
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Adults in duodenum, bile duct
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Mesocestoides corti
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Scolex with 4 suckers, Strobila: small oval sesame-seed proglottids with single ventral genital pore, parauterine organ
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Tetrathyridium, young & adult can go through asexual repro (longitudinal fission)
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Raillietina
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Davainea
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Pseudophyllidean tapeworms
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Indentions in scolex (BOTHRIA) for attachment
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Segments not passed in feces; pass eggs in uterine pore, proglottids dissolved
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Spirometra spp
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Scolex w/ 2 bothria, Square proglottids, single ventral pore, Eggs operculated: no rim
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Ova in feces à ova in water, develop, hatch à free-swimimng coracidium ingested by 1st IH à PROCERECOID à ingested by 2nd IH à PLEUROCERCOID (spargana) à ingested by paratenic or definitive host
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Diphyllobothrium latum
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“Broad fish tapeworm”
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Definitive host ingests undercooked fish
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