多肽菌素S100在海湾扇贝人工育苗生产上应用

A study on application of polypeptin S100 in artificial rearing of scallop larvae

本文研究了多肽菌素S100在海湾扇贝人工育苗生产中的应用;幼虫培育、眼点幼虫附着变态、稚贝培育期投喂多肽菌素S100(5×10-6 mol/L、10×10-6 mol/L)和未添加作为对照的生产试验,试验结果表明:在幼虫培育阶段投喂多肽菌素组在壳长、壳高生长上均明显快于未投喂对照组,实验组之间差异不显著,其中10×10-6 mol/L组最好;实验组幼虫成活率较对照组差,其中对照组与5×10-6 mol/L组差异不显著,与10×10-6 mol/L组差异显著;在眼点幼虫附着变态期,实验组变态率明显高于未投喂的对照组,其中5×10-6 mol/L组最好;在稚贝培育期投喂多肽菌素S100能显著提高稚贝成活率和生长速度,其中实验组之间差异不显著,10×10-6 mol/L组最好。在海湾扇贝人工育苗中使用多肽菌素S100可提高幼虫的生长速度,眼点幼虫的附着变态率和稚贝的生长速度和成活率,并能显著提高单位水体出苗量。

In this rstudy, we explored the application of polypeptide S100 in the artificial bearing of scallop larvae. The animals were divided into experimental group(fed with polypeptide) and control group(without feeding polypeptide). The results showed thatat the stage of larval cultivation, the growth rate of the experimental group was significantly faster than that of the control group, but the survival rate of the larvae was lower than that of the control. At the stage of eyed-spot larvae, the rate of metamorphosis in the experiment group was significantly higher than that of the control. At the stage of juvenile culture, the growth rate and survival rate of the experimental group were significantly higher than those of the control group. Our findings indicated that the use of polypeptide S100 in artificial breeding of scallop can increase the growth rate, the rate of attachment and metamorphosis of larvae, and the growth speed and survival rate of juveniles, thus greatly increase the number of seedlings per unit water body.