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Dynamics of seawater bacterial communities in a shellfish hatchery


Powell, SM and Chapman, CC and Bermudes, M and Tamplin, ML, Dynamics of seawater bacterial communities in a shellfish hatchery, Microbial Ecology, 66, (2) pp. 245-256. ISSN 0095-3628 (2013) [Refereed Article]

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Copyright 2013 Springer Science+Business Media

DOI: doi:10.1007/s00248-013-0183-6


Bacterial 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.

Item Details

Item Type:Refereed Article
Keywords:shellfish hatchery, bacterial communities
Research Division:Biological Sciences
Research Group:Microbiology
Research Field:Microbial ecology
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - aquaculture
Objective Field:Aquaculture crustaceans (excl. rock lobster and prawns)
UTAS Author:Powell, SM (Dr Shane Powell)
UTAS Author:Chapman, CC (Mr Chapman)
UTAS Author:Tamplin, ML (Professor Mark Tamplin)
ID Code:77641
Year Published:2013
Web of Science® Times Cited:12
Deposited By:Tasmanian Institute of Agriculture
Deposited On:2012-05-15
Last Modified:2014-04-04

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