摘要:
贻贝养殖,在我国沿海地区已经广泛开展。贻贝人工育苗是解决贻贝养殖苗种的途径之一,尤其在自然苗缺乏的地区,或是为了选择优良品种出发,更有其重要意义。我们在过去工作的基础上,于1972—1974年期间,在胶南县海水养殖场进行了贻贝生产性人工育苗试验。以后又在青岛进行了一些培养条件的研究。通过几年的工作,对于育苗的一些重要环节,尤其对于提高室内水池培养到附着阶段的成活率,和探索下海后掉苗的原因,已取得了一定的成果,使人工育苗生产初具规模。现将主要结果报告于下。
Abstract:
To provide sufficient seeds for rapidly developing mussel culture,a series of experiments on large scale artificial rearing of mussel spats has been conducted since 1972.In 1973 and 1974,each year we produced over ten million spats in the seven indoor tanks with the total amount of sea water being 20 M3.In 1973,6.69 million spats were harvested from a single concrete tank holding 2.4 M3 of sea water,and in 1974,2.77 million spats were harvested from another concrete tank of the same capacity,giving outputs of 2.29 million and 1.15 million spats per cubic meter of tank water respectively.In 1974,the spats having been transplanted into the sea for some time,2.50 million seed mussels about 2 cm in size were collected and distributed over an area of 10 mow (2/3 hectare) for further growth.Since the artificially reared spats were produced earlier than the natural ones,their growth started earlier too.In the spring of next year,the mussels reached shell sizes of more than 5 cm and were successfully harvested.This early experfence proved that large scale artificial rearing of seed mussels is not only possible but also very promising.
下载:
