几种大型珍珠贝人工苗网箱式中间培育的研究

STUDY ON NET-CAGE CULTURE WITH JUVENILES OF SEVERAL LARGE PEARL OYSTERS

采用网箱式和传统式2种方法,在3个不同类型的海区(内湾性的陵水县黎安港、半开放性的雷州市流沙港、开放性的三亚市六道湾),进行几种大型珍珠贝人工苗的中间培育。经90d的中间培育后,结果表明:网箱式培育与传统式培育相比较,几种珍珠贝的生长速率和成活率都有较大幅度的提高。其壳高生长速率的增幅分别为:珠母贝18.9%、18.2%、19.9%;大珠母贝22.8%、20.6%、23.5%;企鹅珍珠贝21.8%、20.7%、21.7%;均为差异显著(P<0.05)或差异极显著(P<0.01)。成活率的增幅分别为:珠母贝175.0%、147.9%、133.9%;大珠母贝172.8%、159.0%、127.4%;企鹅珍珠贝122.5%、118.2%、102.2%,均为差异显著(P<0.05)或差异极显著(P<0.01)。

Juveniles of several pearl oysters were intensively cultured in net-cage and traditional culture method at three different types of sea area（inland bay-Li＇an, Lingshui, semi-opening bay-Liusha, Leizhou and opening bay-Lutao,Sanya）. Results showed that there was a big increase in the growth rate and survival rate of the juveniles cultured in net-cage. After 90 days culture, the height increment was as follows： Pinctada rnaritifera （Linne） 18. 9%, 18.2% and 19.9%; Pinctada maxima （Jameson） 22. 8%, 20. 6%/60 and 23. 5%; Pteria penguin 21.8%,20.7% and 21. 7% . There was a significant difference （P〈0. 05）or extremely difference（P〈 0. 01） between net-cage and traditional culture in height increment at three types sea area. The survival rate increment was as follows： Pinctada maritifera （Linne） 175.0%, 147.9% and 133.9%; Pinctada maxima （Jameson） 72.8%, 159.0% and 127.4% Pteria penguin 122.5%, 118.2% and 102.2%. There was a significant difference（P〈0.05） or extremely difference（P〈0. 01）between net-cage and traditional culture in survival rate increment at three types sea area.