Benjamin Rennie, Samantha J. Nowland, Ira R. Cooke, Jan M. Strugnell
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引用次数: 0
Abstract
ABSTRACT: The tropical blacklip rock oyster Saccostrea lineage J is an emerging aquaculture species displaying fast growth rates, large sizes and resilience to fluctuations in temperature and salinity, all characteristics that suggest it would be well-suited to bioremediatory applications. To investigate their bioremediatory potential, the present study aimed to (1) determine the influence of temperature (20, 24, 28, 32°C) on the filtration rate of Saccostrea lineage J and (2) describe and quantify uptake in total nitrogen (TN), total phosphorus (TP), total suspended solids (TSS) and chlorophyll a (chl a), using prawn pond effluent and 2 levels of oyster stocking density. The results demonstrated that higher water temperatures promote a faster filtration rate and identified an optimal performance range of 24 to 32°C for a filtration rate of 12.68 to 15.20 l h-1 g-1. In addition, the highest density (0.66 oysters l-1) of stocked oysters resulted in significant reduction of all water quality parameters, with TN reduced by 13%, TP by 16%, TSS by 95% and chl a by 29% when compared to unstocked controls after 3 h. Tissue analysis of 10 oysters with a mean whole weight of 75.4 g revealed a mean of 0.09 g of nitrogen per oyster. Scaling these values suggests that 1.20 kg of nitrogen is removed per tonne of harvested oysters. This study is the first to investigate the bioremediatory potential of Saccostrea lineage J and demonstrates their potential to improve aquaculture wastewater treatment practices and bioremediation.
期刊介绍：
AEI presents rigorously refereed and carefully selected Research Articles, Reviews and Notes, as well as Comments/Reply Comments (for details see MEPS 228:1), Theme Sections and Opinion Pieces. For details consult the Guidelines for Authors. Papers may be concerned with interactions between aquaculture and the environment from local to ecosystem scales, at all levels of organisation and investigation. Areas covered include:
-Pollution and nutrient inputs; bio-accumulation and impacts of chemical compounds used in aquaculture.
-Effects on benthic and pelagic assemblages or processes that are related to aquaculture activities.
-Interactions of wild fauna (invertebrates, fishes, birds, mammals) with aquaculture activities; genetic impacts on wild populations.
-Parasite and pathogen interactions between farmed and wild stocks.
-Comparisons of the environmental effects of traditional and organic aquaculture.
-Introductions of alien species; escape and intentional releases (seeding) of cultured organisms into the wild.
-Effects of capture-based aquaculture (ranching).
-Interactions of aquaculture installations with biofouling organisms and consequences of biofouling control measures.
-Integrated multi-trophic aquaculture; comparisons of re-circulation and ‘open’ systems.
-Effects of climate change and environmental variability on aquaculture activities.
-Modelling of aquaculture–environment interactions; assessment of carrying capacity.
-Interactions between aquaculture and other industries (e.g. tourism, fisheries, transport).
-Policy and practice of aquaculture regulation directed towards environmental management; site selection, spatial planning, Integrated Coastal Zone Management, and eco-ethics.
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