Use of Nannochloropsis sp isolated from the East China Sea in larval rearing of sea cucumber (Apostichopus japonicus)
文献类型: 外文期刊
作者: Tan, Jie 1 ; Wang, Liang 2 ; Liu, Changlin 1 ; Li, Fenghui 1 ; Wang, Xiaojun 3 ; Sun, Huiling 1 ; Yan, Jingping 1 ; Sun, 1 ;
作者机构: 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Nanjing Rd 106, Qingdao 266003, Peoples R China
2.Yantai Fishery Res Inst, Yantai, Peoples R China
3.Zhaoyuan Marine Environm Monitoring Stn, Yantai, Peoples R China
关键词: Apostichopus japonicus;Nannochloropsis sp;feeding quantity;feeding frequency;growth;settlement
期刊名称:AQUACULTURE RESEARCH ( 影响因子:2.082; 五年影响因子:2.415 )
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收录情况: SCI
摘要: The supply of microalgae to hatcheries is a limiting factor for the mass larval production of sea cucumber (Apostichopus japonicus) in Fujian Province, China. In this study, Nannochloropsis sp. isolated from the East China Sea was tested as food for A.japonicus larvae. The first trial compared the effect of mono-, bi- and trialgal diets comprising three microalgae (Chaetoceros muelleri, Dunaliella tertiolecta and Nannochloropsis sp.) on A.japonicus larval growth, survival, settlement and juvenile growth. The results showed that there were no significant differences in survival and settlement between larvae fed with Nannochloropsis sp. and other diets. All diet treatments yielded similar juvenile sea cucumber output. In the second trial, A.japonicus larvae were fed equally four times daily at three different rations (5000, 20000 and 40000 cellsmL(-1)day(-1)). Larvae fed 20000 cellsmL(-1)day(-1) were significantly larger than larvae in other groups and experienced the highest survival rate. In the third trial, A.japonicus larvae were fed 20000 cells mL(-1)day(-1) in three different frequency (2, 3 and 4mealsday(-1)). The greatest body length was observed in larvae that received 3mealsday(-1). Survival and settlement of larvae fed 2mealsday(-1) were significantly lower than other two groups. These results suggest that Nannochloropsis sp. can be used as a diet for the large-scale production of A.japonicus seed, and larvae fed three times daily at a ration of 20000 cellmL(-1)day(-1) are recommended for hatchery production of A.japonicus.
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