Biological feasibility of suspended Pacific oyster (Crassostrea gigas Thunberg) and California sea cucumber (Parastichopus californicus Stimpson) polyculture ...
The potential for California sea cucumber (Parastichopus californicus Stimpson) growth and production when in polyculture with suspended Pacific oysters (Crassostrea gigas Thunberg) was investigated. A 12-month field study was undertaken at two oyster culture sites in British Columbia, Canada, to ex...
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| Format: | Text |
| Language: | English |
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University of British Columbia
2010
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| Online Access: | https://dx.doi.org/10.14288/1.0092482 https://doi.library.ubc.ca/10.14288/1.0092482 |
| Summary: | The potential for California sea cucumber (Parastichopus californicus Stimpson) growth and production when in polyculture with suspended Pacific oysters (Crassostrea gigas Thunberg) was investigated. A 12-month field study was undertaken at two oyster culture sites in British Columbia, Canada, to examine the rates of oyster biodeposition and the utilization of this particulate material as a food source by P. californicus. Peaks in sedimentation rates (93.6 g dry wt m⁻² d⁻¹ ) through 8.5 m water depth were observed in April 2004 and July 2004. At the two study sites, fluxes of particulate organic carbon (POC) through 8.5 m in July amounted to 3123 mg C m⁻² d⁻¹ and 4150 mg C m⁻² d⁻¹ and fluxes of total nitrogen (TN) amounted to 441 mg N m⁻² d⁻¹ and 633 mg N m⁻² d⁻¹ . Mean C/N ratios of particulate material in the sediment trap samples ranged between 5.93 and 8.39 and may be classified as being of high nutritional value. Growth and survivorship of sea cucumbers held in experimental trays below the suspended ... |
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