盐度和水流对青蟹蜕壳及存活的影响  

Effects of salinity and water current on the molting and survival rate of Scylla Serrata

作　　者：于忠利[1] 乔振国[1] 王建纲[1] 

机构地区：[1]中国水产科学研究院东海水产研究所,上海200090

出　　处：《海洋科学》2010年第10期68-70,共3页Marine Sciences

基　　金：中央级公益性科研院所基本科研业务费专项资金项目2007M21

摘　　要：在室内水泥池条件下,对平均体质量为65.3 g±1.52 g的锯缘青蟹(Scylla Serrata)进行了30 d的养殖实验,分别测定其在两种不同盐度和有无水流条件下的蜕壳率和存活率。实验结果表明,盐度15组和25组青蟹成活率差异不显著(P 0.05),但在蜕壳方面盐度15组明显快于盐度25组(P 0.05);水流对青蟹的蜕壳无明显促进作用,但有水流组的存活率显著高于无水流组(P 0.05)。因此,软壳蟹养殖应在适当降低盐度情况下,增加一定量的水流。Scylla Serrata（average weight,65.3 ± 1.52 g） had a 30-days breeding in indoor cement pools;and the survival rate and molting rate in two different salinities with or without water current were measured.The survival rates of Scylla Serrata bred under 15 ‰ and 25 ‰ salinity were not significantly different（P 〈0.05）;but the molt-ing rate of the group of 15 ‰ salinity was significantly faster than that of the group of 25 ‰ salinity（P 〈0.05）.Water current played no significant positive role on the molting,but signicantly increased the survival rate（P 〈0.05）.Therefore,low salinity and appropriate water current should be beneficial to the soft-shell crab breeding.

关 键 词：锯缘青蟹(Scylla Serrata) 盐度 水流 蜕壳率 存活率 

分 类 号：S96[农业科学—水产养殖]