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Datasheet

haplosporidiosis of pacific oysters

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Datasheet

haplosporidiosis of pacific oysters

Summary

  • Last modified
  • 20 November 2019
  • Datasheet Type(s)
  • Animal Disease
  • Preferred Scientific Name
  • haplosporidiosis of pacific oysters
  • Pathogens
  • Haplosporidium nelsoni

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Pictures

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PictureTitleCaptionCopyright
Histological images (A to D) and tissue imprint (E) of Haplosporidia in oysters. A to C. Developmental stages of Haplosporidium nelsoni in Crassostrea virginica from Nova Scotia, Canada. A. Plasmodia (arrows) in the connective tissue of the digestive gland between the tubules. B. Sporocysts (arrows) within the epithelium of the digestive-gland tubules. C. Spores with a prominent operculum (arrow) in the disrupted tissue of a digestive-gland tubule (courtesy of M. Maillet). D and E. Bonamia ostreae from heavily infected Ostrea edulis from France. D. Numerous B. ostreae (arrows) located within haemocytes in the connective tissue between the tubules of the digestive gland. E. Imprint of connective tissue containing many B. ostreae (arrows), some with two nuclei, freed from ruptured haemocytes. All bars = 10 µm.
TitleHistology
CaptionHistological images (A to D) and tissue imprint (E) of Haplosporidia in oysters. A to C. Developmental stages of Haplosporidium nelsoni in Crassostrea virginica from Nova Scotia, Canada. A. Plasmodia (arrows) in the connective tissue of the digestive gland between the tubules. B. Sporocysts (arrows) within the epithelium of the digestive-gland tubules. C. Spores with a prominent operculum (arrow) in the disrupted tissue of a digestive-gland tubule (courtesy of M. Maillet). D and E. Bonamia ostreae from heavily infected Ostrea edulis from France. D. Numerous B. ostreae (arrows) located within haemocytes in the connective tissue between the tubules of the digestive gland. E. Imprint of connective tissue containing many B. ostreae (arrows), some with two nuclei, freed from ruptured haemocytes. All bars = 10 µm.
CopyrightSusan M. Bower
Histological images (A to D) and tissue imprint (E) of Haplosporidia in oysters. A to C. Developmental stages of Haplosporidium nelsoni in Crassostrea virginica from Nova Scotia, Canada. A. Plasmodia (arrows) in the connective tissue of the digestive gland between the tubules. B. Sporocysts (arrows) within the epithelium of the digestive-gland tubules. C. Spores with a prominent operculum (arrow) in the disrupted tissue of a digestive-gland tubule (courtesy of M. Maillet). D and E. Bonamia ostreae from heavily infected Ostrea edulis from France. D. Numerous B. ostreae (arrows) located within haemocytes in the connective tissue between the tubules of the digestive gland. E. Imprint of connective tissue containing many B. ostreae (arrows), some with two nuclei, freed from ruptured haemocytes. All bars = 10 µm.
HistologyHistological images (A to D) and tissue imprint (E) of Haplosporidia in oysters. A to C. Developmental stages of Haplosporidium nelsoni in Crassostrea virginica from Nova Scotia, Canada. A. Plasmodia (arrows) in the connective tissue of the digestive gland between the tubules. B. Sporocysts (arrows) within the epithelium of the digestive-gland tubules. C. Spores with a prominent operculum (arrow) in the disrupted tissue of a digestive-gland tubule (courtesy of M. Maillet). D and E. Bonamia ostreae from heavily infected Ostrea edulis from France. D. Numerous B. ostreae (arrows) located within haemocytes in the connective tissue between the tubules of the digestive gland. E. Imprint of connective tissue containing many B. ostreae (arrows), some with two nuclei, freed from ruptured haemocytes. All bars = 10 µm.Susan M. Bower

Identity

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Preferred Scientific Name

  • haplosporidiosis of pacific oysters

International Common Names

  • English: Delaware bay disease; haplosporidiosis; Haplosporidium nelsoni (MSX) of oysters; Haplosporidium nelsoni infection of oysters; MSX disease; multinucleate sphere x disease

Pathogen/s

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Haplosporidium nelsoni

Host Animals

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Animal nameContextLife stageSystem
Crassostrea gigas (Pacific oyster)Aquatic: Adult|Aquatic/Broodstock|Aquatic/FryEnclosed systems/Ponds; Enclosed systems/Raceways / running water ponds; Open water systems/Enhancements and culture-based fisheries (inc. ranching and stock enhacement); Open water systems/Hard substrate, bottom culture; Open water systems/Line/rope, column culture (buoyed or staked); Open water systems/Net, column culture (buoyed or staked); Open water systems/Rack, column culture; Open water systems/Raft, column culture; Open water systems/Soft substrate/sediment, bottom culture; Open water systems/Stake, column culture; Open water systems/Tray, column culture
Crassostrea virginica (eastern oyster)Aquatic: Adult|Aquatic/Broodstock|Aquatic/FryEnclosed systems/Cages; Enclosed systems/Raceways / running water ponds; Enclosed systems/Tanks; Open water systems/Hard substrate, bottom culture; Open water systems/Line/rope, column culture (buoyed or staked); Open water systems/Net, column culture (buoyed or staked); Open water systems/Rack, column culture; Open water systems/Raft, column culture; Open water systems/Soft substrate/sediment, bottom culture; Open water systems/Stake, column culture; Open water systems/Tray, column culture

Distribution Table

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The distribution in this summary table is based on all the information available. When several references are cited, they may give conflicting information on the status. Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report.

Last updated: 10 Jan 2020
Continent/Country/Region Distribution Last Reported Origin First Reported Invasive Reference Notes

Africa

BotswanaAbsent, No presence record(s)
BurundiAbsent, No presence record(s)
Cabo VerdeAbsent, No presence record(s)
CameroonAbsent, No presence record(s)
Central African RepublicAbsent, No presence record(s)
Congo, Democratic Republic of theAbsent, No presence record(s)
DjiboutiAbsent, No presence record(s)
EritreaAbsent, No presence record(s)
EthiopiaAbsent, No presence record(s)
GhanaAbsent, No presence record(s)
GuineaAbsent, No presence record(s)
MadagascarAbsent, No presence record(s)
MauritiusAbsent, No presence record(s)
SudanAbsent, No presence record(s)
TogoAbsent, No presence record(s)
TunisiaAbsent, No presence record(s)
UgandaAbsent, No presence record(s)
ZimbabweAbsent, No presence record(s)

Asia

BahrainAbsent, No presence record(s)
BruneiAbsent, No presence record(s)
GeorgiaAbsent, No presence record(s)
Hong KongAbsent, No presence record(s)
IndonesiaAbsent, No presence record(s)
IranAbsent, No presence record(s)
IraqAbsent, No presence record(s)
IsraelAbsent, No presence record(s)
JapanAbsent, No presence record(s)
KazakhstanAbsent, No presence record(s)
LebanonAbsent, No presence record(s)
MongoliaAbsent, No presence record(s)
North KoreaAbsent, No presence record(s)
South KoreaAbsent, No presence record(s)
Sri LankaAbsent, No presence record(s)
SyriaAbsent, No presence record(s)
TaiwanAbsent, No presence record(s)
TurkmenistanAbsent, No presence record(s)
UzbekistanAbsent, No presence record(s)

Europe

AndorraAbsent, No presence record(s)
AustriaAbsent, No presence record(s)
BelarusAbsent, No presence record(s)
Bosnia and HerzegovinaAbsent, No presence record(s)
BulgariaAbsent, No presence record(s)
CroatiaAbsent, No presence record(s)
CyprusAbsent, No presence record(s)
CzechiaAbsent, No presence record(s)
DenmarkAbsent, No presence record(s)
EstoniaAbsent, No presence record(s)
FinlandAbsent, No presence record(s)
FranceAbsent, No presence record(s)
GermanyAbsent, No presence record(s)
GreeceAbsent, No presence record(s)
HungaryAbsent, No presence record(s)
IcelandAbsent, No presence record(s)
IrelandAbsent, No presence record(s)
Isle of ManAbsent, No presence record(s)
ItalyAbsent, No presence record(s)
JerseyAbsent, No presence record(s)
LatviaAbsent, No presence record(s)
LiechtensteinAbsent, No presence record(s)
LithuaniaAbsent, No presence record(s)
LuxembourgAbsent, No presence record(s)
MaltaAbsent, No presence record(s)
MoldovaAbsent, No presence record(s)
North MacedoniaAbsent, No presence record(s)
NorwayAbsent, No presence record(s)
PolandAbsent, No presence record(s)
PortugalAbsent, No presence record(s)
SlovakiaAbsent, No presence record(s)
SloveniaAbsent, No presence record(s)
SpainAbsent, No presence record(s)
SwedenAbsent, No presence record(s)
United KingdomAbsent, No presence record(s)
-Northern IrelandAbsent, No presence record(s)

North America

BarbadosAbsent, No presence record(s)
BelizeAbsent, No presence record(s)
BermudaAbsent, No presence record(s)
British Virgin IslandsAbsent, No presence record(s)
Cayman IslandsAbsent, No presence record(s)
Costa RicaAbsent, No presence record(s)
CubaAbsent, No presence record(s)
DominicaAbsent, No presence record(s)
Dominican RepublicAbsent, No presence record(s)
GuatemalaAbsent, No presence record(s)
HaitiAbsent, No presence record(s)
HondurasAbsent, No presence record(s)
JamaicaAbsent, No presence record(s)
MexicoAbsent, No presence record(s)
NicaraguaAbsent, No presence record(s)
PanamaAbsent, No presence record(s)
Saint Kitts and NevisAbsent, No presence record(s)
Saint Vincent and the GrenadinesAbsent, No presence record(s)
Trinidad and TobagoAbsent, No presence record(s)

Oceania

AustraliaAbsent, No presence record(s)
French PolynesiaAbsent, No presence record(s)
New CaledoniaAbsent, No presence record(s)
New ZealandAbsent, No presence record(s)
VanuatuAbsent, No presence record(s)

South America

ArgentinaAbsent, No presence record(s)
BoliviaAbsent, No presence record(s)
BrazilAbsent, No presence record(s)
ChileAbsent, No presence record(s)
ColombiaAbsent, No presence record(s)
Falkland IslandsAbsent, No presence record(s)
French GuianaAbsent, No presence record(s)
GuyanaAbsent, No presence record(s)
ParaguayAbsent, No presence record(s)
PeruAbsent, No presence record(s)
UruguayAbsent, No presence record(s)
VenezuelaAbsent, No presence record(s)

References

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OIE Handistatus, 2005. World Animal Health Publication and Handistatus II (data set for 2004). Paris, France: Office International des Epizooties.

Distribution References

OIE Handistatus, 2005. World Animal Health Publication and Handistatus II (dataset for 2004)., Paris, France: Office International des Epizooties.