密度和附着基对幼参生长的影响

The effects of density and substratum on the growth of Apostichopus japonicus larva

为了实现刺参的规模化生产,调查环境因子对幼参生长及存活的影响,筛选最佳培育条件。通过比较20、30、40和50头/m2培养密度,以及聚氯乙烯网片、旧PVC塑料管、石块和脊瓦4种不同的附着基对幼参生长的影响。结果表明:4种不同的培养密度中,20头/m2适宜幼参生长,存活率和相对生长率均最高为100.0%、163.39%。4种不同的附着基中以石块为附着基较适应幼参生长,相对生长率和存活率也均最高为89.84%、100.0%。因此,在本地进行刺参养殖以20头/m2投播密度及以石块为附着基相结合将取得较好的经济效益。

In order to raise Apostichopus japonicas larva in larger scales, the survival and growth of young Apostichopus japonicas under different environments should be investigated. In present study, the survival and growth of Apostichopus japonicas larva at different density（20,30,40,50 ind/m2） and substratum（pvc netting,old pve pipe, stone and crease tile）were compared in order to optimize rearing condition. The results showed that the density 20 ind/m2 and stone were suitable for the survival and growth of Apostichopus japonicas larva,their survival rate and growth rate were the highest. Therefore, the density 20 ind/m2 and stone were optimal in order to obtain better economic benefits.