Azevedo C., Cachola R. (1992) Fine structure of the apicomplexa oocyst of Nematopsis sp. of two marine bivalve molluscs. Diseases of Aquatic Organisms 14: 69–73
Azevedo C., Matos E. (1999) Description of Nematopsis mytella n. sp. (Apicomplexa), parasite of the mussel Mytella guyanensis (Mytilidae) from the Amazon Estuary and description of its 
oocysts. European Journal of Protistology 35: 427–433
Belofastova I. P. (1996) Gregarines of the genus Nematopsis (Eugregarinida: Porosporidae), parasites of the Black Sea molluscs. Parazitologiya 30: 159–173
Bower S. M., Blackbourn J., Meyer G. R. (1992) Parasite and symbiont fauna of Japanese littlenecks, Tapes philippinarum (Adams and Reeve, 1850), in British Columbia. Journal of Shellfish Research 11: 13–19
Canestri-Trotti G., Baccarani E. M., Paesanti F. (1998) Gregarines of the genus Nematopsis (Apicomplexa: porosporidae) in bivalve molluscs of the Adriatic Sea. Bollettino-Socoieta-Italiana-di-Patologia-Ittica 10: 58–66
Canestri-Trotti G., Baccarani E. M., Paesanti F., Turolla E. (2000) Monitoring of infections by Protozoa of the genera Nematopsis, Perkinsus and Porospora in the smooth venus clam Callista chione from the North-Western Adriatic Sea (Italy). Diseases of Aquatic Organisms 42: 157–161
Carbellal M. J., Iglesias D., Santamarina J., Ferro-Soto B., Villalba A. (2001) Parasites and pathologic conditions of the cockle Cerastoderma edule populations of the coast of Galicia (NW Spain). Journal of Invertebrate Pathology 78(2): 87–97
Feigenbaum D. L. (1975) Parasites of the commercial shrimp Penaeus vanamei (Boone) and Penaeus brasiliensis (Latreille). Bulletin of Marine Science 25(4): 491–514
Jimenez R., Barniol L., Machuca M. (2002) Nematopsis marinus n. sp., a new septate gregarine from cultured penaeoid shrimp Litopenaeus vannamei (Boone), in Ecuador. Aquaculture Research 33: 231–240
Lauckner G. (1983) Diseases of Mollusca: Bivalvia. In: Diseases of marine animals, Vol. II, (Ed. O. Kinne). Biologische Anstalt Helgoland, Hamburg
Lee J. J., Leedale G. F., Bradbury P. (2000) An illustrated guide to the protozoa (2nd ed.). Society of Protozoologists: Allen Press: USA, 190–369
Padovan I. P., Tavares L. A., Corral L. P., Padovan A., Azevedo C. (2003) Fine structure of the oocyst of Nematopsis mytella (Apicomplexa, Porosporidae), a parasite of the mussel, Mytella falcate and of the oyster Crassostrea rizophorae (Mollusca, Bivalvia) from the No rtheastern Atlantic coast of Brazil. Brazilian Journal of Morphology Science 20: 141–145
Prasadan P. K., Janardanan K. P. (2001) Three new species of gregarines (Apicomplexa: Sporozoa : Porosporidae) in the estuarine crabs from Kerala, India. Acta Protozoologica 40(4): 303–309
Prasadan P. K., Janardanan K. P. (1996) Nematopsis idella n. sp. and Uradiophora cuenoti Mercier: two cephaline gregarines from freshwater prawns in Kerala. Acta Protozoologica 35: 239–243
Prema S., Janardanan K. P. (1990) Two new species of cephaline gregarines (Apicomplexa: sporozoa) from the marine prawn Penaeus indicus H. Milne Edwards. Acta Protozoologica 29: 365–373
Prytherch H. F. (1940) The life cycle and morphology of Nematopsis ostrearum, sp. nov. a gregarine parasite of the mud crab and oyster. J. Morphol. 66: 39–65
Shavanas K. R., Prasadan P. K., Janardanan K. P. (1999) Nematopsis rosenbergii n. sp. (Apicomplexa, Cephalina) from the brakishwater prawn, Macrobrachium rosenbergii. Archive fur Protistenkunde 137(2): 161–164
Sprague V. (1970) Some protozoan parasites and hyperparasites in marine bivalve molluscs. pp. 511–526. In: A symposium on diseases of fishes and shellfishes, (Eds. F. Stanislas, C. Sniezko). Special Publication No 5. American Fisheries Society, Washington D.C.
Sprague V., Orr Jr. P. E. (1955) Nematopsis ostreum and N. prytherchi (Eugregarina: Porosporidae) with special reference to the host-parasite relations. Journal of Parasitology 41: 89–104
Tuntiwaranuruk C., Chalermwat K., Upathum E. S., Kruatrachue M., Azevedo C. (2004) Investigation of Nematopsis spp. oocysts in 7 species of bivalves from Chonburi Province, Gulf of Thailand. Diseases of Aquatic Organisms 58: 47–53
Tuntiwaranuruk C., Chalermwat K., Pongsakchat V., Meepool A., Upathum E. S., Kruatrachue M. (2008) Infection of Nematopsis oocysts in different size class of the farmed mussel Perna viridis in Thailand. Aquculture 281: 12–16