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 [...]
The adult Sacculina is known as Sacculina externa which is a parasite of young decapod crustacean, the crab. Generally the female crab is parasitized by the Sacculina. The parasitic habit has caused much degeneracy of different structures in the adult and looks like a fleshy tumour. The adult looses all the external appendages, the carapace and the segmentation of the [...]
Giardia intestinalis inhabiting in the lumen of intestine is a cosmopolitan parasite causing chronic diarrhoea of acute type and leads to malabsorption in the intestine. This Giardia infection retards growth and development of children. The disease has been referred as a Giardiasis and it also has been indicated as a Zoonosis. Treatment of Giardiasis: i. Atebrin and acranil have [...]