文献类型： 外文期刊

作者： Lin, Hui ¹ ; Kelly, Maeve S. ² ; Cook, Elizabeth J. ² ; Black, Kenneth ³ ; Orr, Heather; Zhu, Jian Xin; Dong, Sh ¹ ;

作者机构： 1.Dunstaffnage Marine Lab, Scottish Assoc Marine Sci, Oban PA37 1QA, Argyll, Scotland

2.Dunstaffnage Marine Lab, Scottish Assoc Marine Sci, Oban PA37 1QA, Argyll, Scotland; Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Chines Minist Agr Sustainable Utilizat Marine Fis, Key Lab, Qingdao 266071, Peoples R China; Ocean Univ China, Coll Fisheries, Div Marine Life Sci & Technol, Qingdao 266003, Peoples R China

3.Dunstaffnage Marine Lab, Scottish Assoc Marine Sci, Oban PA37 1QA, Argyll, Scotland; Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Chines Minist Agr Sustainable Utilizat Marine Fis, Key Lab, Qingdao 266071, Peoples R China; Ocean Univ China, Coll Fisheries, Div

关键词： Paracentrotus lividus;larval development;microalgae Dunaliella tertiolecta;microencapsulated formulated feed;fatty acids

期刊名称：AQUACULTURE （ 影响因子：4.242； 五年影响因子：4.723 ）

ISSN： 0044-8486

年卷期： 2007 年 264 卷 1-4 期

页码：

收录情况： SCI

摘要： This study investigated the growth and fatty acid composition of the sea urchin larvae Paracentrotus lividus fed on four types of diets: the microalgae Dunaliella tertiolecta, two types of microencapsulated formulated feeds and a concentrated algal paste. The larvae were successfully raised to metamorphosis on three diets, including the inicroalgae and the two formulated feeds. No significant difference was found in survival rate and metamorphosis rate for larvae fed with microalgae, formulated feeds, or microalgae plus formulated feeds. The fastest growth rate was obtained for larvae fed with microalgae, while normal growth and survival were only achieved for larvae fed with formulated feeds at a high frequency feeding rate. Normal larval development was not supported by either of the formulated feeds at a low feeding rate. A concentrated algal paste was also used for the low ration experiment, but failed to support any larval growth. Post-larval development was better for larvae fed on the formulated feeds, presumably reflecting the nutritional value of these feeds. P. lividits larvae grew well on D. tertiolecta which had a relatively low content of protein (37% dry weight) and lipid (7% dry weight). The larvae could assimilate highly unsaturated fatty acids (HUFAs) such as DHA, EPA and ARA from the diet, or synthesize them from linoleic acid 18:2 n-6 and linolenic acid 18:3 n-3. They could also biosynthesize non-methylene-interrupted-dienoic fatty acid NMID 20:2 de novo when feed on D. tertiolecta and the formulated feeds. An accumulation of PUFA n-3 may improve larval growth. P. lividus larvae showed the tendency of food selection towards D. tertiolecta, and a better formulated feed with additives or attractants will give a better performance in larval growth. (c) 2006 Elsevier B.V. All rights reserved.