Schistosoma is a genus belonging to class Trematoda of phylum Platyhelminthes. Members of this genus are commonly called schistosomes or blood flukes. One of the distinctive features of schistosomes is their sexual dimorphism such that the males are females differ in size or length and the males have a gynecophore to carry their female mate. The genus includes species such as S. japonicum, S. spindale, S. haematobium, S. indicum, S. intercalatum, S. malayensis, S. mansoni, and S. mekongi.
S. indicum is a schistosome that invades the portal and mesenteric veins of its definitive hosts, such as cattle, sheep, goats, horses, and camels. It causes hepato-intestinal schistosomiasis in these animals and is widespread in India and certain Asian countries. Its intermediate host is the freshwater snail, Indoplanorbis exustus.
The species was first described in 1906 by the British scientist, R. E. Montgomery. It was found to occur in a horse from Mukteswar, Uttar Pradesh, India.1
- Kingdom: Animalia
- Phylum: Platyhelminthes
- Class: Trematoda
- Subclass: Digenea
- Order: Strigeidida
- Genus: Schistosoma
- Species: S. indicum
1 Montgomery, R. E. (1906). "Observations on Bilharziosis among animals in India. I". Journal of Tropical Veterinary Science 1 (1): 15–46.