Abstract: The control of reproduction and dealing with high water temperature were studied during artificial breeding of sea urchin Strongylocentrotus intermedius. The results showed that the spawn can occur m spnng mrougn reproductive control, five months earlier than the usual. The ovary reached partial maturity at accumulative degree temperature of 880 ℃·d. When accumulated degree temperature reached 1950 ℃·d, natural spawn was observed, with fertilization rate of 98% and metamorphic attachment of 15.1%. The efficiency of elimination of copepoda increased by 35% by the new technique in which the sea weed was used to collect the juvenile sea urchin whose survival increased by 14%. Ten million seeds were produced in Rongcheng city, Shandong province through the reproductive control in May, 2005.
苏延明, 项福建, 宋坚, 王诗欢, 孙俭. 虾夷马粪海胆反季节繁育技术的研究[J]. 大连海洋大学学报, 2008, 23(2): 136-140.
SU Yan-ming, XIANG Fu-jian, SONG Jian, WANG Shi-huan, SUN Jian. Technology of off- season breeding of sea urchin Strongylocentrotus intermedius. Journal of Dalian Ocean University, 2008, 23(2): 136-140.