| 英文摘要 |
Due to the unique characteristics, including the tropical and subtropical sea area, fast current flow, and relatively low nutrients of the ocean environment of Taiwan, the culture industry of seaweed has been very limited. History records showed that only Gracilaria has been developed to a industry capacity. Since 1965, the production of Gracilaria has been fluctuating due to the government promotion and research support or culture needed. It showed once a flourishing growth then. Later, due to the quality of aqua-cultured Gracilaria unsuitable for agar production, the industry started to decline in 1987.?The success in abalone aquaculture and artificial fertilization demand a support of? feed crop of Gracilaria for sometime. During this period the production of Gracilaria maintained around 10 thousand tons except in 2005, dropping to 3,000 tons, that was because of the illness of abalone. In our country seaweed utilization as food, accompanied by the agar consumption, more than 16 thousands tons of seaweed and seaweed products, valued 1.3 billion NT dollars are imported. Although there are Porphyra aquacultures? developed other than Gracilaria at Penhu area, the production of Porphyra is less than 11 tons, worth 5.2 million NT dollars due to the behind technology. There is a urgent need of promotion in developing seaweed aquaculture of suitable species, in order to improve fisherman’s household economics and fulfilling the market demands. We have been able to develop the aquaculture techniques on Grateloupia sparsa, by collecting the spores from adult plants for germination and grew them to form nodular filaments. We could propagate the nodular filaments by fragmentation and successfully differentiate them to grow to form seedling on ropes. There is still a need to continue the work in this winter and coming spring for the seedling to grow-out in the sea, which is better to be merged with fish cage culture in order to have enough nutrient support. It is expected to establish a de novo model of seaweed aquaculture. |
