Disease data

Infection with Haplosporidium nelsoni

Previously listed diseases
Molluscs
Protozoan disease; Haplosporidia; Haplosporidium nelsoni

Summary from the online OIE Diagnostic Manual

Countries affected

Country Year Status View Records
Canada 2006 Occurrence limited to certain zones View Records
France 2006 Reported present or known to be present View Records
Japan 2006 Reported present or known to be present View Records
Korea, Republic of 2006 Reported present or known to be present View Records
Kuwait 2006 Year of last reported occurrence View Records
United States of America 2006 Reported present or known to be present View Records

Species affected

Species Disease occurence Abstract
Crassostrea gigas Natural occurrence OIE Manual of Diagnostic Tests for Aquatic Animals (5th edition, 2006).
Crassostrea virginica Natural occurrence OIE Diagnostic Manual for Aquatic Animal Diseases 2003 (4th edition).
Crassostrea virginica Natural occurrence OIE Manual of Diagnostic Tests for Aquatic Animals (5th edition, 2006).

Countries affected

Country Year Status View Records
Ireland 2018 First detection in region View Records
United Kingdom 2019 Reported present or known to be present View Records
United States of America 2017 Reported present or known to be present View Records

Species affected

Species Disease occurence Abstract
Crassostrea gigas Natural occurrence Haplosporidiosis in the Pacific oyster Crassostrea gigas from the French Atlantic coast
Crassostrea virginica Carrier not affected Survey of Texas Bay systems for the oyster parasites Bonamia spp., Haplosporidium nelsoni, and Perkinsus marinus
Crassostrea virginica Natural occurrence Prevalence of the protozoan parasite *Haplosporidium nelsoni* in the eastern oyster, Crassostrea virginica, within the Damariscotta River Estuary, in Maine, USA, in 2014 and 2016 as measured by PCR
Crassostrea virginica Unknown Investigating The Life Cycle of Haplosporidium Nelsoni (Msx): A Review
Isognomon alatus Carrier not affected Survey of Texas Bay systems for the oyster parasites Bonamia spp., Haplosporidium nelsoni, and Perkinsus marinus
Mytilidae Experimental demonstration Survey of Bivalve Molluscs for Bonamia spp. and Other Parasitic Pathogens in Florida East Coast Lagoons
Mytilus edulis Natural occurrence Detection and characterisation of haplosporidian parasites of the blue mussel Mytilus edulis, including description of the novel parasite Minchinia mytili n. sp.
Mytilus galloprovincialis Natural occurrence Variation of parasite and fungi infection between farmed and wild mussels (Mytilus galloprovincialis Lamarck, 1819) from the Adriatic Sea
Ostrea angasi Natural occurrence Ostrea angasi acclimatization to French coasts.
Ostreidae Experimental demonstration Survey of Bivalve Molluscs for Bonamia spp. and Other Parasitic Pathogens in Florida East Coast Lagoons

Countries affected

Country Year Status View Records
Canada 2006 Occurrence limited to certain zones View Records
France 2006 Reported present or known to be present View Records
Ireland 2018 First detection in region View Records
Japan 2006 Reported present or known to be present View Records
Korea, Republic of 2006 Reported present or known to be present View Records
Kuwait 2006 Year of last reported occurrence View Records
United Kingdom 2019 Reported present or known to be present View Records
United States of America 2017 Reported present or known to be present View Records

Species affected

Species Disease occurence Abstract
Crassostrea gigas Natural occurrence Haplosporidiosis in the Pacific oyster Crassostrea gigas from the French Atlantic coast
Crassostrea gigas Natural occurrence OIE Manual of Diagnostic Tests for Aquatic Animals (5th edition, 2006).
Crassostrea virginica Natural occurrence OIE Diagnostic Manual for Aquatic Animal Diseases 2003 (4th edition).
Crassostrea virginica Natural occurrence OIE Manual of Diagnostic Tests for Aquatic Animals (5th edition, 2006).
Crassostrea virginica Carrier not affected Survey of Texas Bay systems for the oyster parasites Bonamia spp., Haplosporidium nelsoni, and Perkinsus marinus
Crassostrea virginica Natural occurrence Prevalence of the protozoan parasite *Haplosporidium nelsoni* in the eastern oyster, Crassostrea virginica, within the Damariscotta River Estuary, in Maine, USA, in 2014 and 2016 as measured by PCR
Crassostrea virginica Unknown Investigating The Life Cycle of Haplosporidium Nelsoni (Msx): A Review
Isognomon alatus Carrier not affected Survey of Texas Bay systems for the oyster parasites Bonamia spp., Haplosporidium nelsoni, and Perkinsus marinus
Mytilidae Experimental demonstration Survey of Bivalve Molluscs for Bonamia spp. and Other Parasitic Pathogens in Florida East Coast Lagoons
Mytilus edulis Natural occurrence Detection and characterisation of haplosporidian parasites of the blue mussel Mytilus edulis, including description of the novel parasite Minchinia mytili n. sp.
Mytilus galloprovincialis Natural occurrence Variation of parasite and fungi infection between farmed and wild mussels (Mytilus galloprovincialis Lamarck, 1819) from the Adriatic Sea
Ostrea angasi Natural occurrence Ostrea angasi acclimatization to French coasts.
Ostreidae Experimental demonstration Survey of Bivalve Molluscs for Bonamia spp. and Other Parasitic Pathogens in Florida East Coast Lagoons