Experimental deepwater culture of the Sydney rock oyster (Saccostrea commercialis). VI. Commercial oyster cage systems
Experimental deepwater culture of the Sydney rock oyster (Saccostrea commercialis). VI. Commercial oyster cage systems
复制标题
悉尼岩牡蛎 (Saccostrea Commercialis) 的实验性深水养殖。
DOI：
10.1016/0044-8486(83)90171-0
复制
发表时间：
1983
期刊：
影响因子：
4.5
通讯作者：
Bill Bennett
中科院分区：
文献类型：
--
作者：
B. Wisely;J. Holliday;Bill Bennett
描述了一种保留牡蛎、排除捕食者并减少维护的生长笼;它是从200 mm（8英寸）的钢筋网切割而成的，然后进行热浸镀锌。每个笼子长2.2 m，宽0.8 m，深1.0 m（88× 22× 40 in），包含五层，每层间隔203 mm（8 in）。地板和墙壁上覆盖着19毫米（3 4英寸）的镀锌铁丝网或高密度聚乙烯塑料网。这些笼子可以从筏上吊起，配备单独的漂浮物或用标记浮标降低到底部;它们空重约70公斤（154磅），收获时约220公斤（484磅）。每个笼子里的作物约2.5袋，总重量约150公斤（330磅），在生长良好的地区，每年从每个笼子里收获三到四种作物。在两个这样的作物淘汰苗（22-29克全湿重）转化为板（一级）牡蛎（40-67克）;在其他两个，秒（29-40克）转化为板牡蛎。提供了11种作物的生长率、放养密度和死亡率数据。
A growout cage that retains oysters, excludes predators and reduces maintenance is described; it is cut from 200 mm (8 in) steel reinforcing mesh as kitset units and then hot dip galvanised. Each cage is 2.2 m long, 0.8 m wide and 1.0 m deep (88× 22× 40 in) and contains five floors which are 203 mm (8 in) apart. The floors and the walls are covered with 19 mm (3 4 in) galvanised wire mesh, or high density polyethylene plastic mesh. These cages may be slung from rafts, fitted with individual flotation or lowered to the bottom with a marker buoy; they weigh approximately 70 kg (154 lb) empty and about 220 kg (484 lb) when harvested. Each cage crop consists of approximately 2.5 bags totalling about 150 kg (330 lb), and in good growing areas three to four crops have been harvested from each cage per year. In two such crops culled spat (22–29 g whole wet weight) were converted to plate (first grade) oysters (40–67 g); in the other two, seconds (29–40 g) were converted to plate oysters. Growth rates, stocking densities and mortality data are given for 11 crops.