Growth performance of Eastern oysters Crassostrea virginica in Atlantic Canada: Effect of the culture gear

Mallet, André L.; Carver, Claire E.; Doiron, S.; Thériault, Marie-Hélène

doi:10.1016/j.aquaculture.2013.02.019

Cited by 19 publications

(20 citation statements)

References 12 publications

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“…Floating cage culture may not be as successful in areas of high wave energy as bottom culture (Mallet et al . , ; Bishop & Hooper ). Conversely, bottom culture in areas with low flow and mixing may be susceptible to low dissolved oxygen (Grabowski et al .…”

Section: Discussion and Future Workmentioning

confidence: 99%

“…new shell growth) or feeding disturbances in floating cages, especially in high wave action areas within the cage culture systems (Mallet et al . ).…”

Section: Effects Of Grow‐out Culture Methods On Oyster Feeding and Growthmentioning

confidence: 97%

“…Hydrodynamics conditions generated by currents and waves affect growth rates in floating cage culture, which have been attributed to movement and disturbance of the oysters (Mallet et al . , ; Bishop & Peterson ). Additionally, oysters grown on bottom can be affected by low dissolved oxygen, which is correlated with the hydrodynamic environment (i.e.…”

Section: Effects Of Grow‐out Culture Methods On Oyster Feeding and Growthmentioning

confidence: 99%

“…Mallet et al . () compared growth of oysters in floating cages and attached to floating horizontal ropes. The oysters attached to ropes had limited movement and significantly greater growth rates than the cage cultured oysters across experimental sites.…”

Section: Effects Of Grow‐out Culture Methods On Oyster Feeding and Growthmentioning

confidence: 99%

“…The hydrodynamic environment from tides, waves and currents affect the locations where oyster aquaculture can be conducted (Mallet et al . , ; Bishop & Hooper ; Comeau ; Theuerkauf et al . ).…”

Section: Introductionmentioning

confidence: 99%

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Hydrodynamic effects on oyster aquaculture systems: a review

Campbell

Hall

2018

Reviews in Aquaculture

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Hydrodynamics (i.e. interactions of fluid motion with solid bodies) affect oyster aquaculture within every phase of farming. Although it has many direct and indirect implications to the success of any particular aquaculture endeavour, hydrodynamics is the least understood of environmental factors affecting oyster growth. As the industry continues to mature, it is imperative that the influence of hydrodynamics on oyster aquaculture is thoroughly understood. Hydrodynamics also interacts with other environmental factors, such as salinity, temperature, turbidity, food supply and oxygen, which affect the health and growth of oysters through mixing and transport. Proper siting and management of aquaculture requires a comprehensive understanding of the hydrodynamics involved and its impact on the culture of oysters. Unfortunately, literature is inconsistent on oyster feeding and growth response to the influence of hydrodynamics. Feeding and growth limiting velocities are reported that range from 1 to above 22 cm s À1 . This is in contrast with thriving oyster reefs in a natural setting that exist and thrive above 15 cm s À1 . Upweller systems have reported bulk velocities that range from 0.5 to 7.1 cm s À1 . In practice, higher current velocities are desirable because they increase delivery of food to the oysters, improve water quality, and enhance dispersal of biodeposits. This paper summarizes the findings of those studies in regard to hydrodynamics and provides suggestions for future work.

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Section: Discussion and Future Workmentioning

confidence: 99%

“…new shell growth) or feeding disturbances in floating cages, especially in high wave action areas within the cage culture systems (Mallet et al . ).…”

Section: Effects Of Grow‐out Culture Methods On Oyster Feeding and Growthmentioning

confidence: 97%

Section: Effects Of Grow‐out Culture Methods On Oyster Feeding and Growthmentioning

confidence: 99%

Section: Effects Of Grow‐out Culture Methods On Oyster Feeding and Growthmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Hydrodynamic effects on oyster aquaculture systems: a review

Campbell

Hall

2018

Reviews in Aquaculture

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Eastern Oyster Crassostrea virginica Growth and Mortality in New Hampshire (USA) Using Off‐Bottom Farm Gear

et al. 2020

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Eastern oyster farm production has increased dramatically in the northeasternUnited States in recent decades. Farming methods vary, but different configurations of off-bottom "rack-and-bag" gear are commonly used and there is little published research on how different methods affect oyster growth. Field experiments were conducted during 2016-2018 on two farm sites in New Hampshire to assess the effects on oyster growth and mortality of different gear deployment configurations: (1) bag height above the bottom; (2) different combinations of oyster seed size, bag mesh size, and stocking density; (3) rack-and-bag versus bottom tray; (4) oyster seed size and over-winter mortality; and (5) envelope-versus box-style bags.Bag stocking density consistently had the strongest effect, with oyster growth being up to 3 times faster in bags that were stocked at 0.5 L compared with 2.0 L of wet oysters. Additionally, stocking density had a stronger effect on the oysters that were in 6-mm mesh bags than on those that were in 4-mm mesh bags. Oysters that were in bags in the top level of the rack grew significantly faster in one experiment but not in another. There was no significant difference in oyster growth comparing rack-and-bag and bottom trays. The over-winter mortality of oysters that were raised in rack-and-bag gear averaged 17% in one experiment and 46% in another. Early growth was similar for oysters that were deployed in box-and envelope-style bags, but by the final measurement (at 2.4 months) oysters in the box-style bags were 18% larger. The major findings were interpreted in the context of the notion that food supply and the factors affecting it have strong effects on the growth of farmed oysters, so this dynamic should drive strategies to improve gear deployment methods. Additionally, the typical situation of widely varying differences in uncontrollable factors (e.g., currents or phytoplankton concentrations) among sites and their effects on gear deployment methods may best be addressed by site-specific empirical studies that are conducted by farmers.In many areas, eastern oyster Crassostrea virginica aquaculture has been shifting from wild harvest in leased or otherwise permitted sites to a variety of gear-intensive methods that use hatchery-produced seed oysters (MacKenzie et al. 1997;Brennessel 2008). Seed oysters are initially grown in a nursery system (e.g., upwellers), and

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