1 / 12

Protozoa

Protozoa. General characteristic of the Protozoa are : 1- Unicellular ( consist of one cell ) this cell performs all phsiological function ( activities ) of life such as locomation , reproduction , respiration , ingestion , digestion and excretion .

manju
Télécharger la présentation

Protozoa

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Protozoa General characteristic of the Protozoa are : 1- Unicellular ( consist of one cell ) this cell performs all phsiological function ( activities ) of life such as locomation , reproduction , respiration , ingestion , digestion and excretion . 2- They vary in size and shape some are visible while others require high magnification ( by microscope ) . 3- The majority of protozoa are free living but some are parasitic . 4- Both sexual and asexual reproduction occur in protozoa ( the majority of protozoa reproduce by asexual reproduction ) .

  2. Class : Mastigophora.Order:kinetoplastidaFamily: trypanosomatidaeGenus:trypanosomaDisease:typansomiasis.1- T.gambiense :cause African sleeping sickness in human. 2- T .crusi :cause chagas disease (American trypanosomiasis) in human and dog.3- T .evansi : cause surra disease of all domestic animals.4- T. equiperdum: cause Dourine disease in horse & donky .

  3. Transmission or intermediet hosts (vector):- T .brucei T .gambiensetsetse fly (glossina). T .rhodesiense T .evansitabanus (horse fly). T .cruzi kissing bug (panstrongylus). T.equiperdumtransmition by coitus . Trypanosoma are present in blood , lymph , lymphnodes and cerebrospinal fluid .trypanosoma is multiply by longitudinal binary fission.

  4. Trypanosoma can be divided in to two groups:- Salivaria groupsstercoraria groups T .bruceiT.cruzi T .gambienseT.lewsi T .rhodesienseT.theileri T .evansi T .equiperdum

  5. Morphology :- 1-trypanosmes is an elongated , spindle-shape cell with a single nucleus near the middle of parasite. 2-it has kinetoplast. 3-it has undulating membrane. 4-possess a slender-single flagella at the anterior end. 5-flagellum serve as organ of attachment and locomotion. 6-there are four stages in life cycle :- A –trypomastigote:-postnuclearkinetoplast , flagellum start from anterior end with undulating membrane , found in vertebrate and insects . B –epimastigote:-kinetoplast anterior to nucleus flagellum emerging from the body and continuing to the anterior end with short undulating membrane.

  6. C –promastigote:-kinetoplast at the anterior end. Flagellum emerging from anterior end of the body . there is no undulating membrane. D–amastigote:- spherical or oval in shape without undulating membrane . flagellum not extend from outside the membrane , start from the kinetoplast . Diagnosis:- 1.blood smear , trypanosomes found in blood. 2.Lymph smear . 3.Serological test .

  7. Trypanosoma cruzi. A, B, C: Trypomastigotes in blood; D, E: epimastigote (with short anterior undulating membrane); F: amastigote colony in heart muscle.

  8. Bug Kissing found in Texas

  9. thanks

More Related