Abstract

Cold storage and transport of pediveliger stage larvae to commercial growers for delayed on-site setting reduces the cost of using hatchery produced seed. The percentage of Sydney rock oyster ( Saccostrea commercialis) larvae arech set following cold storage at 11°C for up to 98 h was excellent (77–85%). Percentage of Pacific oyster ( Crassostrea gigas) larvae set (68%) was unaffected by a storage temperature of 6°C for 98 h. Shell length and eyespot diameters may be useful criteria for assessing when pediveliger stage larvae are ready for storage. Critical values for shell length and eyespot diameter for Sydney rock oyster larvae were 292.2 μm and 20.3 μm and for Pacific oyster larvae were 325.4 μm and 14.2 μm, respectively.

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