Parasitology Archives | The Biology Notes

Leishmania donovani- Habitat, Morphology and Life Cycle

November 25, 2020 by Laxmi Neupane

Systematic position Phylum: Protozoa Subphylum: Sacromastigophora Superclass: Mastigophora Class: Zoomastigophora Order: Kinetoplastida Genus: Leishmania Species: donovani Discovery and Distribution The species of Leishmania donovani was reported simultaneously by Leishmania from London and Donovan from Mardas in (1903) hence the name Leishmania donovani. L. donovani causes a malaria-like fever-oriental disease in the man …

Taenia solium- Classification, Habitat, Structure, Body wall

November 25, 2020 by Laxmi Neupane

Classification of Taenia solium Phylum Platyhelminthes Class Cestoda Subclass Eucestoda Order Taenioidea Genus Taenia Species solium Habits and Habitat of Taenia solium Taenia solium, also known as pork tapeworm, is found worldwide. Thus, its distribution is cosmopolitan. Its adults dwell in man’s small intestine as an internal parasite, i.e., endoparasitic, where it …

Ascaris lumbricoides- Life cycle, pathogenicity, clinical manifestation

November 25, 2020November 13, 2020 by Laxmi Neupane

Life cycle of Ascaris lumbricoides In the life cycle of Ascaris, there is no secondary host. The life cycle of Ascaris is monogenetic as it involves only one host i.e. Man. Figure: Life cycle of Ascaris lumbricoides. Image Source: CDC. 1. Egg in feces The sexually mature female produces as many as …

Reproductive system of Ascaris lumbricoides

November 25, 2020November 13, 2020 by Laxmi Neupane

Reproductive system of Ascaris lumbricoides Only sexual reproduction occurs in Ascaris. Sexes are separate i.e., dioecious in Ascaris and these roundworms also show distinct sexual dimorphism. Males are smaller than the females and they also have a curved tail with pre and post anal papillae, cloaca, and a pair of spicules or …

Ascaris lumbricoides- Digestive, Respiration, Excretory, Nervous System

November 25, 2020November 13, 2020 by Laxmi Neupane

Digestive System of Ascaris lumbricoides I) Alimentary canal: It is a straight and complete tube that starts with the mouth at the anterior end and ends with the anus at the posterior end. It comprises a short pharynx or esophagus representing foregut, along intestine or mid-gut, and short rectum or hindgut. Figure: …

Ascaris lumbricoides- Habitat and External Morphology

November 25, 2020November 13, 2020 by Laxmi Neupane

Habitat of Ascaris lumbricoides Ascaris lumbricoides are the largest most familiar endoparasites of the man freely living in the lumen. It has also been reported from animals like pigs, cattle, sheep, and squirrels. It inhabits the small intestine of more frequently children than adults. It is cosmopolitan in distribution. Sometimes, it migrates …

Parasitology VIVA Question and Answer

November 3, 2020 by Sushmita Baniya

1) What is a parasite? The organism that depends on the host (other organisms) for all of its lifecycle or for some parts of its lifecycle is known as a parasite. 2) What is the host? The host is any organism or animal that harbors the parasite. There it provides nourishment and …

Plasmodium and Malaria

May 5, 2020 by Nargis Khanam

The early history of Plasmodium and Malaria In the past time, it was believed that malaria spread by bad air hence the name means bad air. In 1880 Malaria parasites firstly discovered by a french doctor, Charles Laveran. In 1897 Ronald Ross worked on avian malarial parasites (P. praecox), Ronald Ross was …

Entamoeba histolytica- Morphology, Epidemiology, Life cycle, Pathogenesis, Clinical findings

January 23, 2020January 23, 2020 by Muhammad Faisal Abbasi

Entamoeba histolytica– Morphology, Epidemiology, Life cycle, Pathogenesis, Clinical findings 500 Million populations are infected over the world. 60-70% population in Pakistan is infected Entamoeba histolytica caused amebic dysentery and liver abscess. Morphology Trophozoites A cyst (egg) Cyst= it is immovable and has disease-causing form. Cyst survives for a long period of time …

Methods to control plant nematodes

December 30, 2019December 29, 2019 by Arslan Ali

What are Nematodes? The word nematode is derived from Greek words- Nema meaning “thread” and oids meaning “resembling or forms”. Nematodes are also known by different names such as threadworms, roundworms, eelworms, and nema. Nematodes constitute the largest group of an animal kingdom comprising 80-90% of all multicellular animals. These organisms are …

50 points	Registering on a website (One time)
10 points	Publishing a new post