Histological examination of infected tissues reveal the typical enlarged cells containing microcolonies of organisms.
Unlike bivalve molluscs, there are fewer reports of prokaryotic intracy- toplasmic inclusion bodies in crusta- ceans of which 13 cases were caused
by rickettsia-like organisms and one other by chlamydia-like bacteria.
King crabs infected by rickettsial organisms may have arrested ovarian development, become lethargic and die when held
for prolonged periods of time. Infected tissues in king crabs have included the epithelial cells of the antennal gland and hepatopancreas that become indurated and friable. Histological examination of infected tissues demonstrates enlarged cells with intracytoplasmic inclusions composed of microcolonies of rod- shaped bacteria causing disseminated granulomatous foci and caseous necrosis of the tissues.
IV. Transmission
Certain rickettsia-like organisms
in cultured and wild shrimp have been transmitted horizontally by cannibalism and via seawater exposure. Similar stud- ies with other rickettsias either have not been successful or the mode of transmis- sion is unknown.
V. Diagnosis
Histological examination of infected tissues reveal the typical enlarged cells containing microcolonies of organisms. Confirmation of typical rickettsial orchlamydial morphology is by transmis- sion electron microscopy. PCR may be available for certain agents described in the literature.
Rickettsia-like agents have been reported from crustaceans in the United States from Florida, Hawaii and Washington, and from British Columbia, Canada, France, Sweden, Mexico, Ecuador, Madagascar, China, Malaysia and Australia. Host species have included wild freshwater amphipods and cultured crayfish, at least five wild and cultured species of penaeid shrimp, one species of wild pandalid shrimp, and one cultured and three wild crab species including a 1984 report of one blue king crab from the eastern Bering Sea near St. Lawrence Island.
https://www.adfg.alaska.gov/static/species/disease/pdfs/crustaceandiseases/prokaryotic_intracytoplasmic_inclusions.pdf
08-28-2021-1202 - Sharon Petersen S. Wade Crustacean infection - molluscum contagium, mollusk disease, poxiviridae, entomology, Marine-Acquatic Organism Life (non human), acquatic organisms, etc.. - Inflammation Obesity shell fish Allergy and Microcolony-Organism-Intracellular (Scar lesion ulcer cyst bubule purule grovule plaque calculus min lique etc.) [ Diabeatles; anaboly; hypertrophy; enlarged cell; obesity; crustacean acquatic organism culture etc.; esp. cons tiss melt malacia cystulation cancer]
08-28-2021-1202 - Histological examination of infected tissues reveal the typical enlarged cells containing microcolonies of organisms. - Sharon Petersen S. Wade Crustacean infection - molluscum contagium, mollusk disease, acquatic organisms, etc.. - Inflammation Obesity shell fish Allergy and Microcolony-Organism-Intracellular (Scar lesion ulcer cyst bubule purule grovule plaque calculus min lique etc.) [ Diabeatles; anaboly; hypertrophy; enlarged cell; obesity; crustacean acquatic organism culture etc.; esp. cons tiss melt malacia cystulation cancer]
SIV HIV AIDS
MIV = molluskum hiv aids syndrome (mollusc derived hiv)
https://www.cdc.gov/parasites/diphyllobothrium/biology.html
No comments:
Post a Comment