Dorisa
Dorisa is a genus of parasitic alveolates in the phylum Apicomplexa.
The genus was separated from the genus Dorisiella by Levine in 1908. Dorisiella was created for a parasite infecting a marine polychaete by Ray in 1930. Levine separated off a number of species that while morphologically similar occurred in vertebrates rather that polychaetes.The species in this genus infect the gastrointestinal wall of vertebrates.Description
Genus diagnosis is dependent on the oocyst: there is a definite cell wall in this genus whereas in Dorisiella the oocyst wall is membrane like.
