First record of protozoan parasites, Tetrahymena rostrata and Callimastix equi from the edible oyster in Sundarbans region of West Bengal, India

Abstract

Several protozoan parasites have been found infecting the edible oysters, hence deteriorating the meat quality. Protozoan parasites such as, Tetrahymena rostrata and Callimastix equi infested the edible oyster in Sundarbans region, West Bengal, India, are first record from this region. Due to filter feeding habit of the organisms, oysters provides excellent ecological services in regard to efficient cleaning of infectious agents from surrounding water as a potential measure to improve water quality. However, these environmental benefits are associated with public heath risks from contaminated oysters intended for human consumption.

Cultivation of fish ciliate parasites: Progress and prospects

“…The genus Tetrahymena Furgason, 1940, is comprised of a large number of species inhabiting primarily freshwater ecosystems throughout the world. 108,109 Although most species are free-living (consuming bacteria and decaying organic matter for their nutritional needs), their dietary requirements are complex 108,110,111 and histophagous species have been isolated from a variety of animals including adult and larval insects, [112][113][114][115] flatworms, 116 molluscs, 117,118 amphibians, 119,120 and freshwater teleosts where they can be highly pathogenic, particularly in guppies (Poecilia reticulata Peters), one of the most popular species of ornamental fish.…”

Multiple sclerosis and the microbiota

“…The origins of the symbiosis of animals with intestinal protists may be difficult to assess. However, the free-living protist Tetrahymena is known to colonize the aforementioned hydra [ 71 ], a simple diploblastic animal. Thus, protists can colonize the guts of the simplest organisms known to contain a gut microbiome, suggesting that the evolution of symbiosis between animals and intestinal protists could have origins as ancient as the intestinal microbiota itself ( Fig.…”