農業部-水產試驗所全球資訊網農業部-水產試驗所全球資訊網

本試驗之目的在研究櫻桃寶石簾蛤之人工繁養殖技術和不同鹽度對受精卵孵化率、 浮游苗變態率和活存率及不同密度對稚貝成長率之影響。選擇成熟種貝，陰乾4小時 後，置入3.5噸玻離纖維水槽中產精卵，今年度共人工繁殖6次，每批次所得受精卵 介於1000-3100萬粒。取受精卵置於0、5、10、15、20、25、30、35psu八種不同鹽 度探討對受精卵孵化率之影響，試驗結果以25 psu組及30psu組顯著高於其於各組 ，其次35psu組， 最差為15 psu組、10psu組及5psu組且顯著低於其於各組。取浮游 幼苗(183.3±4.5µm)置於5、8、11、14、17、20、23、26、29、32和35psu不同鹽度 中觀察其存活率與變態率；不同鹽度對浮游幼苗的活存率在17~20psu最佳介於 84.2%4至85.45%之間，其次23-26 psu在73.91%至76.59%之間，最差為8psu以下，變 態率以17~20psu最佳介於81.79%至82.67%之間，其次23-26 psu在71.88%至74.55%之 間，11psu以下變態率為0 %。取14.01±0.84mm,0.795±0.105g櫻桃寶石簾蛤探討60、 90、120、150、180、210粒/平方米六組不同密度對其稚貝成長之影響，試驗結果以 60粒/平方米組顯著高於其於各組，最差為210粒/平方米組顯著低於其於各組，其殼 長及重量增加率分別介於37.19-65.37%及131.51%-327.86%之間。

This study is to understand the processes of artificial propagation of Mercenaria mercenaria , the effect of different salinity on hatching rate, larva metamorphosis rate and survival rate and different stocking densities on the growth of juveniles.Propagation process was to select mature broodstock and to cool dry for four hours, then put into 3.5 tons of glass fiber water tank for artificial breeding. Artificial propagation of this year were six times, fertilized eggs per batch were between 1000 to 3100 ten thousand. The fertilized egg placed into 0,5,10,15,20,25,30,35psu eight different salinities, The 20psu and 30psu groups were significantly higher than the other groups, followed by 35 psu, the worst was the 15 psu ,10psu and 5psu groups significantly lower than the other groups. The larva (183.3±4.5µm) placed into 5,8, 11, 14, 17, 20, 23, 26, 29 ,32 and 35psu different salinities observed its survival and metamorphosis rate. The best survival rate were between 17psu to 20psu for 84.24- 85.45%, followed by 23psu to 26psu for 73.91% - 76.59%, the worst was less than 8psu. The best metamorphosis rate were between 17psu to 20 psu for 81.79% to82.67%, followed by 23psu to 26psu for  for 71.88% - 74.55%, less than 11psu the metamorphosis rate were 0%. Effect of different stocking densities 60,90,120,150,180,210 individual / m 2 on the growth of juvenile: the initial average shell length 14.01±0.84mm and total weight of 0.795± 0.105g of  Mercenaria mercenaria were used for growth performance. In shell length growth and weight growth, the 60 individual / m2 was significant higher than other groups. the worst was the 210 individual / m2 group significantly lower than the other groups. the length growth and weight increase rate were between 37.19% to 65.37% and 131.51% to 327.86%.