Experimental feeding of Sydney rock oysters (Crassostrea commercialis = Saccostrea cucullata)

Wisely, Baughan; Reid, Barbara L.

doi:10.1016/0044-8486(78)90078-9

Cited by 17 publications

(6 citation statements)

References 8 publications

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“…Despite the absence of a clear trend in the composition of major taxa, several OTUs belonging to the major orders observed in oysters such as Mycoplasmatales (genus Mycoplasma), Campylobacterales (genus Arcobacter), and Planctomycetales (genera Blastopirellula and Singulisphaera) were also present in the water fraction (0.22-8 µm fraction). This proximity suggests that oysters may have preferentially fed on small particles during the sampling period, as previously described by Wisely and Reid (1978) where they identified an optimal particle ingestion size (< 5μm) in the oyster Saccostrea glomerata. The daily changes in seawater bacterial community (0.22-8μm fraction) were previously observed and expected here (Yung et al 2016).…”

Section: Dg Microbiota Specificity Depends On Its Ecological Nichesupporting

confidence: 77%

The marine intertidal zone shapes oyster and clam digestive bacterial microbiota

Offret

Paulino

Gauthier

et al. 2020

FEMS Microbiology Ecology

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Digestive microbiota provide a wide range of beneficial effects on host physiology and are therefore likely to play a key role in marine intertidal bivalve ability to acclimatize to the intertidal zone. This study investigated the effect of intertidal levels on the digestive bacterial microbiota of oysters (Crassostrea gigas) and clams (Ruditapes philippinarum), two bivalves with different ecological niches. Based on 16S rRNA region sequencing, digestive glands, seawater and sediments harbored specific bacterial communities, dominated by operational taxonomic units assigned to the Mycoplasmatales,Desulfobacterales and Rhodobacterales orders, respectively. Field implantation modified digestive bacterial microbiota of both bivalve species according to their intertidal position. Rhodospirillales and Legionellales abundances increased in oysters and clams from the low intertidal level, respectively. After a 14-day depuration process, these effects were still observed, especially for clams, while digestive bacterial microbiota of oysters were subjected to more short-term environmental changes. Nevertheless, 3.5 months stay on an intertidal zone was enough to leave an environmental footprint on the digestive bacterial microbiota, suggesting the existence of autochthonous bivalve bacteria. When comparing clams from the three intertidal levels, 20% of the bacterial assemblage was shared among the levels and it was dominated by an operational taxonomic unit affiliated to the Mycoplasmataceae and Spirochaetaceae families.

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Section: Dg Microbiota Specificity Depends On Its Ecological Nichesupporting

confidence: 77%

The marine intertidal zone shapes oyster and clam digestive bacterial microbiota

Offret

Paulino

Gauthier

et al. 2020

FEMS Microbiology Ecology

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“…It is evident that colloids in seawater are closely related with rock oyster feeding behaviour as experimented by Wisely and Reid [20]. Certainly, it was exposed by other reports that the colloidal material is preferentially enriched in Ce in river water and second most concentrated REE in the dissolved particulate matter in lake water [17].…”

Section: Resultsmentioning

confidence: 66%

Rare Earth Elements Behaviour at West Coast of Peninsular Malaysia Rocky Shore Ecosystem Using Saccostrea cucullata as Bioindicator

Kamaruzzaman¹,

Miskan²,

Fikriah³

et al. 2017

Asian J. Chem.

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“…High numbers of particulates have been shown to reduce feeding efficiency in oysters (Loosanoff & Tommers 1948; Wisely & Reid 1978). For S. commercialis , < 2 mg L −1 was optimal, with no production of pseudofaeces.…”

Section: Discussionmentioning

confidence: 99%

“…For S. commercialis , < 2 mg L −1 was optimal, with no production of pseudofaeces. At 18 mg L −1 , 50% of the oysters were producing pseudofaeces, and at 35 mg L −1 all oysters were producing both faeces and pseudofaeces (Wisely & Reid 1978).…”

Section: Discussionmentioning

confidence: 99%

The efficiency and condition of oysters and macroalgae used as biological filters of shrimp pond effluent

Jones

Preston

Dennison

2002

Aquaculture Research

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Current shrimp pond management practices generally result in elevated concentrations of nutrients, suspended solids, bacteria and phytoplankton compared with the influent water. Concerns about adverse environmental impacts caused by discharging pond effluent directly into adjacent waterways have prompted the search for cost‐effective methods of effluent treatment. One potential method of effluent treatment is the use of ponds or raceways stocked with plants or animals that act as natural biofilters by removing waste nutrients. In addition to improving effluent water quality prior to discharge, the use of natural biofilters provides a method for capturing otherwise wasted nutrients. This study examined the potential of the native oyster, Saccostrea commercialis (Iredale and Roughley) and macroalgae, Gracilaria edulis (Gmelin) Silva to improve effluent water quality from a commercial Penaeus japonicus (Bate) shrimp farm. A system of raceways was constructed to permit recirculation of the effluent through the oysters to maximize the filtration of bacteria, phytoplankton and total suspended solids. A series of experiments was conducted to test the ability of oysters and macroalgae to improve effluent water quality in a flow‐through system compared with a recirculating system. In the flow‐through system, oysters reduced the concentration of bacteria to 35% of the initial concentration, chlorophyll a to 39%, total particulates (2.28–35.2 µm) to 29%, total nitrogen to 66% and total phosphorus to 56%. Under the recirculating flow regime, the ability of the oysters to improve water quality was significantly enhanced. After four circuits, total bacterial numbers were reduced to 12%, chlorophyll a to 4%, and total suspended solids to 16%. Efforts to increase biofiltration by adding additional layers of oyster trays and macroalgae‐filled mesh bags resulted in fouling of the lower layers causing the death of oysters and senescence of macroalgae. Supplementary laboratory experiments were designed to examine the effects of high effluent concentrations of suspended particulates on the growth and condition of oysters and macroalgae. The results demonstrated that high concentrations of particulates inhibited growth and reduced the condition of oysters and macroalgae. Allowing the effluent to settle before biofiltration improved growth and reduced signs of stress in the oysters and macroalgae. A settling time of 6 h reduced particulates to a level that prevented fouling of the oysters and macroalgae.

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Experimental feeding of Sydney rock oysters (Crassostrea commercialis = Saccostrea cucullata)

Cited by 17 publications

References 8 publications

The marine intertidal zone shapes oyster and clam digestive bacterial microbiota

The marine intertidal zone shapes oyster and clam digestive bacterial microbiota

Rare Earth Elements Behaviour at West Coast of Peninsular Malaysia Rocky Shore Ecosystem Using Saccostrea cucullata as Bioindicator

The efficiency and condition of oysters and macroalgae used as biological filters of shrimp pond effluent

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