中间球海胆南北接力养殖试验

A north-south relay aquaculture experiment of Strongylocentrotus intermedius

为探索中间球海胆(Strongylocentrotus intermedius)福建—山东两地“南北接力”养殖模式的可行性,于2021年3月至2022年4月在福建连江奇达海域和山东荣成烟墩角海域开展了中间球海胆南北接力海上筏式养殖试验。结果显示,利用鲍筏式养殖设施,定期投喂海带(Laminaria japonica)和龙须菜(Gracilaria lemaneiformis),经过13.5个月的养殖,大规格中间球海胆的壳径达到(61.97±2.38)mm,体质量达(93.13±9.84)g,性腺指数为17.69%±1.84%;中规格中间球海胆的壳径达(58.20±3.03)mm,体质量达(68.43±8.88)g,性腺指数为15.38%±1.44%;小规格中间球海胆的壳径达(51.39±2.41)mm,体质量达(53.28±8.71)g,性腺指数为13.45%±1.39%。综上表明,利用福建、山东南北两地的海水温度季节差异进行中间球海胆海上筏式接力养殖,可大大加快海胆的生长速度,缩短养殖周期,是一种高效的养殖模式,具有较好的推广价值,其中投放大规格的中间球海胆苗种可带来更高的经济效益。

In order to explore the feasibility of the north-south relay aquaculture model for S.intermedius between Fujian and Shandong Province,raft aquaculture experiments were conducted in the Qida sea area of Lianjiang,Fujian and Yandunjiao sea area of Rongcheng,Shandong from March 2021 to April 2022.Using abalone raft aquaculture facilities,regular feeding of kelp(Laminaria japonica)and asparagus(Gracil aria lemaneiformis)were carried out.After 13.5 months of breeding,the shell diameter of large-size S.intermedius had reached(61.97±2.38)mm,the body mass had reached(93.13±9.84)g,and the gonadal index had reached 17.69%±1.84%.The shell diameter of the middle-size S.intermedius had reached(58.20±3.03)mm,the body mass had reached(68.43±8.88)g,and the gonadal index had reached 15.38%±1.44%.The shell diameter of the small-size S.intermedius had reached(51.39±2.41)mm,the body mass had reached(53.28±8.71)g,and the gonadal index had reached 13.45%±1.39%.The experimental results showed that according to the seasonal differences in seawater temperature between Fujian and Shandong,S.intermedius sea raft relay aquaculture could greatly improve the growth rate of sea urchins,shorten the breeding cycle,and was an efficient breeding model with good promotion value.Using the north-south relay aquaculture model;choosing large-size S.intermedius seedlings to breed could bring higher economic benefits.