haplosporidiosis of pacific oysters

Pictures

Picture	Title	Caption	Copyright
Title Histology Caption 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. Copyright Susan M. Bower	Histology	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.	Susan M. Bower

Identity

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

Distribution Table

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.

References

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

Distribution Maps