2011nematodes1 - 11/17/2011 1 Classification Phylum...

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Unformatted text preview: 11/17/2011 1 Classification Phylum Nematoda Class Adenophorea Order Trichocephalida Genera: Trichuris / Trichinella Class Secernentea Subclass Rhabditida Order Rhabditia (suborder Rhabditina) Genus: Strongyloides Order Strongylida Genera: Ancylostoma,Necator Order Ascaridida Genera: Ascaris,Toxocara, Anisakis / Enterobius Order Spirurida Genera: Wuchereria,Brugia, Onchoerca, Loa, Dirofilaria / Dracunculus Intestinal Nematodes Trichuris trichiuria Size <50mm Lack an excretory system Have a capillary like esophagus Do not have Phasmids Are monodelphic 11/17/2011 2 Trichuris Trichiura (The whipworm) stichocytes Life Cycle L3 11/17/2011 3 Epidemiology Distributed worldwide. More prevalent in tropics. Millions infected worldwide (~800 million) In U.S.(especially S.E) Trichuris is the second most prevalent nematode after Enterobius . 2.2 million cases in US Humans acquire infection by ingesting parasite eggs in food or water or soil....
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This note was uploaded on 11/21/2011 for the course ZOO 4232 taught by Professor Kima during the Fall '10 term at University of Florida.

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2011nematodes1 - 11/17/2011 1 Classification Phylum...

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