Saran's Learn Microbiology

ECONOMIC IMPORTANCE OF PROTOZOA Protozoa as Animal food §   The major ecological importance of protozoa is its role in food chain. §   Many aquatic animals feed on protozoa. §   For example, giant whales screen seawater to get tons of protozoa for food. §   Many fishes and invertebrates rely on protozoa as major sources of protein. Environmental applications §   Protozoa help control the population of bacteria as well as other Protozoans by feeding on them. §   Important link in food chain. Example: Zooplanktons (animal like organisms) are Protozoa feed on the photosynthetic Phytoplankton (plant like organisms). §   Controlling the population of other organisms is important in maintaining ecological balance and diversity. §   Like bacteria, aquatic and terrestrial protozoa hasten the decomposition of the remains of dead plants and animals Symbiotic relationships §   Many species of protozoa are in mutual relationship w...

MICROSCOPIC IDENTIFICATION OF PROTOZOA SALINE WET MOUNT (Using Lugol’s Iodine) ·        Saline wet mount is made by mixing a small quantity (about 2 mg) of feces in a drop of Saline placed on a clean glass slide. The smear is then examined under a microscope. ·        Saline wet mount is used for the detection of Trophozoites and Cysts of Protozoa, and Eggs and Larvae of Helminths. ·        It is particularly useful for the detection of live motile Trophozoites of Entamoeba histolytica , Giardia lamblia and Balantidium coli . Materials Required a)      Normal Saline (0.85 % NaCl) b)      Lugol’s Iodine c)      Glass slide d)      Coverslips e)      Pipettes f)       Microscope    Procedure ·        Take ...

CLASSIFICATION OF PROTOZOA ·        In 1985 the Society of Protozoologists published a Taxonomic scheme that distributed the Protozoa into Six phyla. ·       Most accepted classification of Protozoa is given by B. M. Honigberg and others based on the scheme given by the committee on Taxonomy and Taxonomic problems of the society of Protozoologists. They classified the Phylum Protozoa into four major groups based on the Structure and the part involved in the Locomotion. a)      Sub-phylum I: Sarchmastigophora b)      Sub-phylum II: Sporozoa c)      Sub-phylum III: Cnidospora d)      Sub-phylum IV: Ciliophora   A) SUB-PHYLUM I: SARCOMASTIGOPHORA ·        Sarcodes - fleshy; mastix - whip; phoros - bearing ·        Locomot...