PPT-Lecture 3 Protozoa/ Pathogenic Flagellates

Part I Medical Parasitology Prof Dr Ahmed Ali Mohammed II The flagellates The flagellates are a group of protozoa distinguished by having one to several threadlike extensions from the ectoplasm in their trophozoite stage called flagella single flagellum The flagellate protozoa that parasitize man primarily divided to. Institut de Ciències del Mar (CSIC), Barcelona. MEDOCEAN meeting, 28 November 2013. Looking for the dominant marine bacterivores. Looking for the dominant marine bacterivores. Smetacek 2002. Nature. Animal-like organisms. EJERCICIO 6. 88-107 (EDITION 14. TH. ). 77-102 (EDITION 15. TH). . http://www.microscopyu.com/moviegallery/pondscum. /. . Goals for today. Learn to use the microscope. Learn to recognized the various protozoan phyla.. AMOEBA. Protozoa:. The protozoa are a diverse group of unicellular, eukaryotic organisms. Many have evolved structural features (. organelles. ) that mimic the organs of . multicellular. organisms. Reproduction is generally by mitotic binary fission, although in some . : is a cell or organism with one or more whip-like organelles from . ectoplasm called . flagella. . The flagellate protozoa includes:. . (A). flagellates of the digestive tract and genital organs: inhabiting the mouth, intestine, and genital tract are typically lumen parasites ex. . Protozoa Proto . Pertama. . . Zoon . Hewan. Uniseluler. Mikroskopis. (3-100 . mikron. ). Soliter. / . Koloni. H. abitat : . Perairan. , . tempat. . lembab. Alat. . gerak. . Single-celled. eukaryotic microorganisms capable of performing all functions . of life. .. . Morphology: . wide variety (from amorphous to well defined). . Structure:. mass of . protoplasm. differentiated into outer. One-celled animal-like organisms. Found in decayed materials. Found in animal or bird feces. Found in insect bites. Found in contaminated water. Many have flagella. African sleeping sickness. Amebic dysentery. ( Haemoflagellates ) • The major clinical significance include members of 2 genera • 1 - Genus: Leishmania (L. donovani , L. tropica and L. major). • 2 - Genus: Trypanosoma (T. brucei a (Protozoa). All . are unicellular heterotrophs. . Nutrition . by ingesting other organisms or dead organic material. . Some organisms are parasitic, since they cannot actively capture food. They must live in an area of the host organism that has a constant food supply, such as the intestines or bloodstream of an animal. . Henning J, Wibawa H, Morton J, Usman TB, Junaidi A, Meers J. Scavenging Ducks and Transmission of Highly Pathogenic Avian Influenza, Java, Indonesia. Emerg Infect Dis. 2010;16(8):1244-1250. https://doi.org/10.3201/eid1608.091540. . : . Proton . = . pertama. . (. satu. ) + . Zoon = . hewan. ). . Ciri-ciri. . khusus. :. . Kecil (. berukuran. 0,0002 mm . sampai. 0,0003 mm), . biasanya. . terdiri. . atas. . satu. . protists. . Mostly . they are . unicellular. , but a few form colonies in which individual cells are joined by . cytoplasmic. threads or embedded in a common matrix. They are distributed in diverse moist habitats, commonly occur in sea, in fresh water and in soil. . A. mastigote . Pro. mastigote. . Epi. mastigote. . Trypo. mastigote. . Eccentric nucleus. . Central nucleus. Free Flagellum . Free Flagellum. . Free Flagellum. . No free flagellum. Central nucleus. Flagellates/ Part I. Medical Parasitology. Prof. Dr. Ahmed Ali Mohammed. Nonpathogenic Amoebae. A number of species of the genus . Entamoeba . are of worldwide distribution but do not appear to cause disease. The knowledge of these species is of value in differentiating the harmless commensals from potentially pathogenic E. .