English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Vibrio tubiashii is reported to be a bacterial pathogen of larval Eastern oysters (Crassostrea virginica ) and Pacific oysters (Crassostrea gigas ) and has been associated with major hatchery crashes, causing shortages in seed oysters for commercial shellfish producers. Another bacterium,Vibrio coralliilyticus , a well-known coral pathogen, has recently been shown to elicit mortality in fish and shellfish. Several strains ofV. coralliilyticus , such as ATCC 19105 and Pacific isolates RE22 and RE98, were misidentified asV. tubiashii until recently. We compared the mortalities caused by twoV. tubiashii and fourV. coralliilyticus strains in Eastern and Pacific oyster larvae. The 50% lethal dose (LD50 ) ofV. coralliilyticus in Eastern oysters (defined here as the dose required to kill 50% of the population in 6 days) ranged from 1.1 × 104 to 3.0 × 104 CFU/ml seawater; strains RE98 and RE22 were the most virulent. This study shows thatV. coralliilyticus causes mortality in Eastern oyster larvae. Results for Pacific oysters were similar, with LD50 s between 1.2 × 104 and 4.0 × 104 CFU/ml.Vibrio tubiashii ATCC 19106 and ATCC 19109 were highly infectious toward Eastern oyster larvae but were essentially nonpathogenic toward healthy Pacific oyster larvae at dosages of ≥1.1 × 104 CFU/ml. These data, coupled with the fact that several isolates originally thought to beV. tubiashii are actuallyV. coralliilyticus , suggest thatV. coralliilyticus has been a more significant pathogen for larval bivalve shellfish thanV. tubiashii , particularly on the U.S. West Coast, contributing to substantial hatchery-associated morbidity and mortality in recent years.

Mortalities of Eastern and Pacific Oyster Larvae Caused by the Pathogens Vibrio coralliilyticus and Vibrio tubiashii