Hassenrueck, Christiane, Bachmann, Jennifer, Hanke, Inken, Moncada, Chyrene, Conaco, Cecilia, Grossart, Hans-Peter and Gärdes, Astrid (2018) Evaluating impacts of intensive open-cage milkfish aquaculture on bacterioplankton communities in Bolinao, Philippines. [Poster] In: Marine 'omics Workshop. , 16.07. - 17.07.2018, Delmenhorst, Germany .

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Milkfish aquaculture is gaining in importance to provide fish for local consumption in the Philippines, irrespective of ecological and health concerns. Intensive usage of open-cage systems has resulted in a severe deterioration of the surrounding ecosystem, eutrophication, increased organic matter loading, and hypoxia, and may also promote the proliferation of bacterial pathogens. The current study investigated free-living and particle-attached bacterioplankton communities at five stations along the Guiguiwanen Channel (Bolinao, Philippines), simultaneously collecting data on physico-chemical environmental parameters. We covered a gradient from the entrance of the channel, without fish cages and a more pronounced influence of the open ocean, to the secluded interior, exploited by numerous fish cages. Bacterial community composition was assessed using full-length amplicon sequencing of the 16S rRNA gene on the PacBio platform. This approach allowed for the analysis of bacterial communities at a higher taxonomic resolution than typically provided by the Illumina platform. Thereby, we aim to identify potentially harmful bacterial strains with higher confidence. The amplicon-based analysis will further be supplemented by metagenomes and metatranscriptomes of selected samples, as well as by quantitative PCR of marker genes for pathogenic bacteria, such as Vibrio parahaemolyticus and V. cholera, potentially carrying antimicrobial resistance genes. Our goal is to provide a holistic assessment of the effects of intensive open-cage aquaculture, identifying potential indicators for detrimental impacts on animal and human health for more sustainable management of this rapidly growing industry.

Document Type: Conference or Workshop Item (Poster)
Research affiliation: Biogeochemistry and Geology > Tropical Marine Microbiology
Affiliations > Not ZMT
Projects: ACUTE
Date Deposited: 19 Dec 2019 14:47
Last Modified: 01 Oct 2020 13:00
URI: http://cris.leibniz-zmt.de/id/eprint/3153

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