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Schistosoma

Schistosoma
Schistosoma mansoni egg
Naučna klasifikacija e
Domen: Eukaryota
Carstvo: Animalia
Tip: Platyhelminthes
Klasa: Trematoda
Red: Strigeidida
Porodica: Schistosomatidae
Rod: Schistosoma
Weinland, 1858
Vrste

Schistosoma bomfordi
Schistosoma bovis
Schistosoma curassoni
Schistosoma datta
Schistosoma edwardiense
Schistosoma guineensis
Schistosoma haematobium
Schistosoma harinasutai
Schistosoma hippotami
Schistosoma incognitum
Schistosoma indicum
Schistosoma intercalatum
Schistosoma japonicum
Schistosoma kisumuensis
Schistosoma leiperi
Schistosoma malayensis
Schistosoma mansoni
Schistosoma margrebowiei
Schistosoma mattheei
Schistosoma mekongi
Schistosoma ovuncatum
Schistosoma nasale
Schistosoma rodhaini
Schistosoma sinensium
Schistosoma spindale
Schistosoma turkestanicum

Rod trematoda, Schistosoma, poznati kao krvni metilji, su parazitski pljosnati crvi koji su odgovorni za znatnu grupu infekcija ljudi zvanu šistozomijaza. Svetska zdravstvena organizacija smatra šistozomijazu drugom najviše socioekonomski devastirajućom parazitskom bolesti, (nakon malarije), sa stotinama miliona infektiranih širom sveta.[1][2]

Odrasli pljosnati crvi su paraziti krvnih kapilara bilo mezenterijuma ili pleksusa bešike, u zavisnosti od infektirajuće vrste. Oni su jedinstveni među trematodima i mnogim drugim pljosnatim crvima po tome što su dvodomni sa prepoznatljivim polnim dimorfizmom između mužjaka i ženke. Hiljade jaja se oslobađaju i dospevaju bilo u bešiku ili organe za varenje (u zavisnosti od vrste). Ona se zatim izlučuju urinom ili fekalijama u okolinu. Larve potom moraju da prođu kroz fazu u intermedijarnom pužnom domaćinu, pre sledećeg larvnog stupnja parazita koji može da inficira nove sisarske domaćine putem direktne penetracije kože.

  1. ^ „Schistosomiasis Fact Sheet”. World Health Organization. Приступљено 10. 8. 2011. 
  2. ^ „Schistosomiasis”. Centers for Disease Control and Prevention. Приступљено 10. 8. 2011. 

Spoljašnje veze

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Schistosoma
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