Ecological Niches in the Human Body 1. Skin: Leishmania 2. Eye: Acanthamoeba 3. Mouth: Amoebae and flagellates (usually non-pathogenic) 4.Gut: Giardia, Entamoeba(and invasion to liver), Cryptosporidium sospora, Balantidium 5. Genitourinary Tract TrichomonasEcological Niches in the Human Body: ▪ 1. Skin: Leishmania ▪ 2. Eye: Acanthamoeba ▪ 3. Mouth: Amoebae and flagellates ▪ (usually non-pathogenic) ▪ 4.Gut: Giardia, Entamoeba (and invasion to liver), Cryptosporidium, Isospora, Balantidium ▪ 5. Genitourinary Tract : Trichomonas