Abstract
Neopyropia tenuipedalis (Rhodophyta, Bangiales) is one of the local rarely nori species in Japan. In Yamaguchi Prefectuire, this species had been collected as food resource, which are called “Aka-nori”. Moreover, Yamaguchi Prefectural Fisheries Research Center begun the aquaculture trials in Yamaguchi Bay in 2002 and the amount of production had increased gradually year and year. However, production has continued to decrease since 2012. More recently, intense disappearance of thalli was due to predation by blackhead seabream, Acanthopagrus schlegelii. We had to develop some other techniques for stable producing of N. tenuipedalis. That is land-based cultivation of this species. This project was supported by the grant of the Science and Technology Research Promotion Program for Agriculture, Forestry, Fisheries, and Food Industry for three years. At that time, there were few reports about this species and we started the fundamental researches in every life-stage of it. And then, we were able to clarify the temperature characteristics in all life-stage of N. tenuipedalis with laboratory experiments. Although we have developed the land-based cultivation techniques, there are many problems such as stable growth, amino acids contents, the right of strain and so on. We keep the techniques improving for development of land-based cultivation using many seaweeds including N. tenuipedalis.
https://ror.org/04kkb3773 
