There are two important processes that play a significant role in parasitism, infections and intoxications. 1. Infection: Infection refers to entry of a pathogen into host tissues after transmission, and its growth and reproduction resulting in disease. The events of infection are as below: (i) Attachment and Colonization by the Pathogen: The host contains its own normal microbial flora. A [...]
Out of the various diseases which are caused by mosquito, the malaria is the most common and well known disease in our country. This disease is caused by a protozoan endoparasite known as Plasmodium. The genus Plasmodium includes all the blood parasitic protozoa causing a febrile disease known as malaria. P. vivax causes a special type of malaria fever known [...]
The life history of Sacculina is extremely interesting. The actual mechanism of fertilisation is not known. Opinion varies regarding the process of fertilisation. According to Delage's view all the batches of the eggs are fertilized by the sperms of the same individual except the first batch. So this kind of fertilisation is known as self fertilisation. But above all the [...]