Isolation, identification, and pathogenicity of <i>Pseudoalteromonas aliena</i> associated with oyster disease outbreaks in summer.

ABSTRACT: With the continuous expansion of oyster farming scale, disease has become one of the main obstacles to restricting the development of oyster farming. In the present study, 20 bacterial strains were identified from Crassostrea gigas with pustulosis, among which Pseudoalteromonas aliena emerged as the predominant strain, characterized by its rod-shaped morphology and possession of flagella. P. aliena exhibited α-hemolytic activity at 28°C and displayed high susceptibility to all 20 chemotherapeutic agents tested. After P. aliena infection, the oyster mortality rate increased. The gills were swollen and eroded, and the mantle was green with pustules after P. aliena infection. The gill filaments exhibited swelling and necrotic cells, and the mantle showed a l

SUBMITTER: Mu S 

PROVIDER: S-EPMC12323356 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature