P-trematodes

P-trematodes - Platyhelminthes -flat worms species other...

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Platyhelminthes -flat worms species other names niche/ type of where reproduction reservoir Alaria marcianae intestinal cross fertilize blood fluke Schistosoma japonicum blood fluke Schistosoma mansoni blood fluke Schistosomyle liver Cercarial Dermatitis Fasciolopsis buski small intestine orient cross fertilize? liver-->bile ducts cosmopolitan, Fascioliasis Mid East liver fluke liver there is also a A. americana Schistosoma hematobium veins of urinary bladder eggs: terminal spine Africa, Mid East (ancient egyptians) diecious/ separate sexes host specific, no known animal superior mesenteric vein s, small intestin eggs:rudimentary spine china, malaysia, indonesia, phillipines diecious/ separate sexes least host specific, zoonosis, cattle and h20 buffalo inferior mesenteric veins, large intestin eggs: lateral spine africa, mid east, s. america (new world) diecious/ separate sexes no animal reservoir little schistosome, blood fluke migrate, mature, mate swimmers itch, swamp itch, nutria itch --caused by other schistosomes mammallian schistosomes:H eterobilharzia americana, Schistosoma matthei intestinal fluke, largest fluke in man Fasciola helpatica (tissue) liver rot, liver fluke, sheep liver fluke self fertilize (hermaphroditic) eco loss: condemn rivers, low milk/meat, poor growth of young Fascioliasis subset: Halzoun Fascioloides magna (tissue)
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Platyhelminthes -flat worms contd species other names niche/ type of where reproduction reservoir lacent fluke liver fluke(bile ducts) chinese liver fluke oviduct fluke lungs zoonosis Paragonimus kellicotti Nanophytes salminocola salmon poisoning small intestine Metagonimus yokogawai small intestine btw villi Platyhelminthes general Dicrocelium dendriticum (tissue) europe, asia, n. america, austria self fertilize (hermaphroditic) Clonorchis sinensis (tissue) bile ducts in liver: bile duct erosion, gall stones, cholangiocarcinoma: also caused by opisthorchis far east: china, japan self fertilize (hermaphroditic) Prosthogonimus macrorchis (tissue) Paragonimus westermani human lung fluke, coffee bean fluke japan, china, korea. NOT in USA diploid: cross fertilize triploid: parthenogenetic Louisiana Connection africa, mid and far east
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helminth= worm helminth= worm 1)nematodes 2) platyhelminthes a) trematodes b) cestodes *dorsoventrally flattened *no body cavity (acoelomic) *obligate parasites *digestive system- primitive ending in blind sac (absent in cestodes) *nervous, muscular, excretory * are monecious( 1 sex) other than schistosomes Platyhelminthes: Trematodes
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P-trematodes - Platyhelminthes -flat worms species other...

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