四种单胞藻和海洋红酵母对刺参浮游幼虫生长与变态成活的影响  

Effects of Marine Yeast(Rhodomonas sp.) and Four Different Microalgal Diets on Larval Growth and Survival at Metamorphosis in the Sea Cucumber Apostichopus japonicus

作　　者：张萍萍[1] 李琪[1] 孔令锋[1] 于瑞海[1] 

机构地区：[1]中国海洋大学海水养殖教育部重点实验室,山东青岛266003

出　　处：《中国海洋大学学报（自然科学版）》2011年第10期30-34,共5页Periodical of Ocean University of China

基　　金：山东省科技发展计划项目(2009GG10005013)资助

摘　　要：本实验研究4种单胞藻与海洋红酵母(Rhodomonas sp.)搭配以及单胞藻混合投喂对刺参浮游幼虫体长生长及变态存活率的影响。采用三角褐指藻(Phaeodactylum tricornutum)、小新月菱形藻(Nitzschia closteriumf.minutissima)、牟氏角毛藻(Chaetoceros muelleri)和等鞭金藻(Isochrysis galbana)与海洋红酵母分别以1∶0、0.8∶0.2、0.6∶0.4、0.4∶0.6、0.2∶0.8和0∶1的比例搭配投喂刺参浮游幼虫,观测浮游幼虫每天的体长变化以及变态成活率。结果表明,单胞藻与海洋红酵母以适当比例混合投喂能提高刺参幼虫的体长日增长率,单独投喂海洋红酵母的刺参变态成活率也显著高于单独投喂单胞藻组。采用2种单胞藻以0.5∶0.5的比例混合投喂浮游幼虫,结果表明牟氏角毛藻与小新月菱形藻混合投喂组刺参浮游幼虫的变态成活率高于牟氏角毛藻与等鞭金藻的混合组。The effects of the mixtures of marine yeast Rhodomonas sp. and four types of microalgae and the mixtures of two different microalgae on the growth and survival rate at metamorphosis in Aposticho- pus japonicus were examined. The growth and survival at metamorphosis were observed in the A. ja- ponicus larvae fed on a combined diet of Rhodomonas sp. and four types of microalgae （Phaeodactylum tricornuturn, Nitzschia closterium f. minutissima, Chaetoceros muelleri, and Isochrysis galbana ） in the ratios of 1 ： 0, 0.8 ： 0.2, 0.6：0.4, 0.4： 0.6, 0.2： 0.8 and0 ： 1. The results indicated that when the microalgae Were mixed with Rhodomonas sp. in an appropriate ratio, the growth rate in body length of the larvae increased markably. The survival at metamorphosis of the larvae fed on Rhodomonas sp. was obvi- ously higher than those only fed on the microalgae. When two types of microalgae were mixed in the ratio of 1 ： 1, the survival rate at metamorphosis of the larvae fed on the mixture of C. rnuelleri and N. closterium was clearly higher compared with those fed on the mixture of C. rnuelleri and I. galbana.

关 键 词：单胞藻 海洋红酵母 刺参 生长率 变态成活率 

分 类 号：S917[农业科学—水产科学]