Farmed oyster mortality follows consistent Vibrio community reorganization.

ABSTRACT: Mortality events in marine bivalves cause substantial economic losses in aquaculture, yet the microbial dynamics underlying these events remain poorly characterized. Here, we investigated succession patterns in oyster-associated Vibrio communities during mortality events by sampling eastern oysters (Crassostrea virginica) at a North Carolina commercial farm that has experienced repeated, unexplained mortality events. Through whole-genome sequencing of 110 Vibrio isolates from 26 oysters sampled across mortality events in two consecutive years, we identified six conserved phylogenetic clades with distinct temporal associations. Vibrio mediterranei and a clade of resident vibrios consistently dominated the initial cultured community at the onset of mortality. However, V. med

SUBMITTER: Smith S 

PROVIDER: S-EPMC12542681 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature