Disseminated neoplasia in cultured hard clams (Mercenaria mercenaria).
Vet Pathol
; 60(5): 624-627, 2023 09.
Article
in En
| MEDLINE
| ID: mdl-37161998
ABSTRACT
Marine bivalves are commonly affected by disseminated neoplasia of presumed hemocytic origin (i.e., hemic neoplasia and hemocytic neoplasia). Histopathology of 520 cultured hard clams (Mercenaria mercenaria) from Florida was performed for health surveillance over a consecutive 13-month period. Disseminated neoplasia was identified in 9 of 520 animals (1.7%). The neoplasia was characterized by the presence of large, round to oval, anaplastic cells within hemolymphatic vessels and sinusoids with variable infiltration into adjacent connective tissues of the visceral mass, mantle, foot, and/or adductor muscles. Frequent involvement and/or infiltration of the gill was also identified (5/9). Disseminated neoplasia in other species of clams, mussels, and cockles is considered a transmissible disease. At this time, it is unknown if these hard clams represent de novo development of the disease or potential transmission; however, this report expands both the geographic and host range for this condition.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Mercenaria
Type of study:
Prognostic_studies
Limits:
Animals
Language:
En
Journal:
Vet Pathol
Year:
2023
Type:
Article
Affiliation country:
Gabon