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Dynamics of seawater bacterial communities in a shellfish hatchery
journal contribution
posted on 2023-05-17, 11:40 authored by Shane PowellShane Powell, Chapman, CC, Bermudes, M, Mark TamplinMark TamplinBacterial disease is a significant issue for larviculture of several species of shellfish, including oysters. One source of bacteria is the seawater used throughout the hatchery. In this study carried out at a commercial oyster hatchery in Tasmania, Australia, the diversity of the bacterial community and its relationship with larval production outcomes were studied over a 2-year period using terminal restriction fragment length polymorphism and tag-encoded pyrosequencing. The bacterial communities were very diverse, dominated by the Alphaproteobacteria, Gammaproteobacteria, Flavobacteria and Cyanobacteria. The communities were highly variable on scales of days, weeks and seasons. The difference between the intake seawater and treated clean seawater used in the hatchery was smaller than the observed temporal differences in the seawater throughout the year. No clear correlation was observed between production outcomes and the overall bacterial community structure. However, one group of Cyanobacterial sequences was more abundant when mass mortality events occurred than when healthy spat were produced although they were always present.
History
Publication title
Microbial EcologyVolume
66Pagination
245-256ISSN
0095-3628Department/School
Tasmanian Institute of Agriculture (TIA)Publisher
Springer New York LLCPlace of publication
233 Sring St, New York, NY 10013 United StatesRights statement
Copyright 2013 Springer Science+Business MediaRepository Status
- Restricted