盐度对玉足海参浮游幼体生长的影响  

Effect of salinity on growth of planktonic larvae of sea cucumber(Holothuria leucospilota)

作　　者：黄星美 赵旺[1,2,3] 李长林 邓正华 张钰伟[4] 温为庚 马振华 于刚[1,2] HUANG Xingmei;ZHAO Wang;LI Changlin;DENG Zhenghua;ZHANG Yuwei;WEN Weigeng;MA Zhenhua;YU Gang(South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences/Key Laboratory of South China Sea Fishery Resources Exploitation&Utilization,Ministry of Agriculture and Rural Affairs,Guangzhou 510300,China;Tropical Fishery R&D Center,South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Sanya 572018,China;Sanya Tropical Fisheries Research Institute,Sanya 572018,China;Tianjin Agricultural University,Tianjin 300384,China)

机构地区：[1]中国水产科学研究院南海水产研究所/农业农村部南海渔业资源开发利用重点实验室,广东广州510300 [2]中国水产科学研究院南海水产研究所热带水产研究开发中心,海南三亚572018 [3]三亚热带水产研究院,海南三亚572018 [4]天津农学院,天津300384

出　　处：《南方水产科学》2022年第3期111-117,共7页South China Fisheries Science

基　　金：国家重点研发计划项目(2019YFD0900905);三亚市院地科技合作项目(2018YD05);财政部和农业农村部国家现代农业产业技术体系(CARS-49);中国水产科学研究院中央级公益性科研院所基本科研业务费专项资金(2020TD55);农业农村部财政专项(NHYYSWZZZYKZX2020)。

摘　　要：为提高玉足海参(Holothuria leucospilota)幼体繁育的成活率,为热带海参野生资源开发利用提供理论基础,探讨了盐度对玉足海参浮游幼体生长、发育和成活率的影响。观察记录了21 d内不同盐度下玉足海参浮游幼体的生长与发育情况,通过测定分析了盐度对其体长、胃宽和成活率的影响。结果表明,在玉足海参耳状幼体阶段,33和36盐度组海参幼体的体长特定生长率显著高于其他盐度组(P<0.05),24和27盐度组间、33和36盐度组间差异不显著(P>0.05);30盐度组幼体胃宽的特定生长率显著高于其他盐度组(24、33和36盐度组,P<0.05);而盐度为27~30时,玉足海参幼体胃的发育和成活率最佳;盐度为27~30时,玉足海参大耳幼体球状体结构发育更加强壮、突出,其整体形态更加强健、清晰;因此,玉足海参浮游幼体发育最适盐度为27~30。In order to improve the survival rate of larval breeding of Holothuria leucospilota and provide a theoretical basis for the development and utilization of wild resources of tropical sea cucumber,we investigated the effects of salinity on the growth,development and survival rate of planktonic larvae of H.leucospilota by measuring the growth and development of the planktonic larvae under different salinity conditions and analyzing the effects of body length,stomach width and survival rate of the planktonic larvae on its growth.Results demonstrate that the specific growth rates(SGR)of body length in the salinity groups of 33 and 36 were significantly higher than those in the other salinity groups(P<0.05),and there was no significant difference between the salinity group of 24 and 27,33 and 36(P>0.05).When the salinity was 30,the SGR of larval stomach width was sig-nificantly higher than that in the other salinity groups(24,33 and 36 salinity groups,P<0.05).When the salinity was 27−30,the development and survival rate of stomach of planktonic larvae were the best,and its overall shape was stronger and clearer.Therefore,27−30 is the optimal salnility for the development of plankton larvae of H.leucospilota.

关 键 词：玉足海参幼体 盐度 特定生长率 

分 类 号：S968.9[农业科学—水产养殖]