Cyclops are the most familiar copepod of class-Crustacea. These crustaceans are found in fresh water ponds, lakes and in slight brakish water of the estuary. They are regarded as zoo-planktons. Cyclops acts as intermediate host of guinea-worm, Dracunculus medinensis. The coiled larvae of Dracunculus are released in water by rupturing the blister of human beings. In case of guinea- worm [...]
The following points highlight the six major diseases caused by mosquitoes. The diseases are: 1. Malaria 2. Filariasis or Elephantiasis 3. Encephalities 4. Dermatobia 5. Dengue 6. Dengue Haemorrhagic Fever. Disease # 1. Malaria: Malarial fever is a serious disease of man which is created by protozoan endoparasite known as Plasmodium. The malarial disease in man is caused by the [...]
In this article we will discuss about the transmission of disease by vectors. There are three different kinds of transmission for the spread of various diseases: (a) Direct transmission: In this case the transmission of disease is occurred through close contact i.e. transferred from man to man through close contact, e.g., scabies. (b) Mechanical transmission: In this method, the disease-agent [...]