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不同饵料对中华绒螯蟹幼体发育和存活的影响
引用本文:江洪波.不同饵料对中华绒螯蟹幼体发育和存活的影响[J].水产学报,2000,24(5):442-447.
作者姓名:江洪波
作者单位:1. 华东师范大学生物系,上海 200062
2. 上海浦东孙桥名特水产开发有限公司,上海 2001203
基金项目:国家自然科学基金项目(39770578);教育部"跨世纪优秀人才培养计划”基金项目;霍英东青年教师基金资助项目.
摘    要:采用高度不饱和脂肪酸(HUFA)营养强化的轮虫、轮虫与卤虫组织投喂中华绒螯蟹幼体,以各项幼体的存活率为评判指标,对不同饵料及其组合的投喂效果进行了探讨。研究结果表明:轮虫是中华绒螯解早期幼体(Ⅰ、Ⅱ期)的适口饵料,幼体存活率随轮虫密度的增加而逐渐上升,但当轮虫数量超过最适密度时,幼体存活率反而有所下降。其中,未强化的轮虫达投喂密度为60ind.mL^-1,强化轮虫最适密度为40ind.mL^-1。Zao状Ⅰ、Ⅱ期投喂40ind.mL^-1轮虫,从Ⅲ期开始投喂10ing.mL^-1卤虫无节幼体,能较好地满足中华绒螯蟹幼体发育的营养需求,提高大眼幼体的存活率。表明强化幼体饵料HUFA特别是EPA和DHA能有效地促进幼体的发育与存活和脱壳率。

关 键 词:中华绒螯蟹  幼体  发育  存活率  饵料  脱壳率
文章编号:1000-0615(2000)05-0442-06
收稿时间:2014/4/16 0:00:00
修稿时间:1999年12月27

Effects of rotifer and Artemia nauplii on larval development and survival of Eriocheir sinensis
JIANG Hong bo.Effects of rotifer and Artemia nauplii on larval development and survival of Eriocheir sinensis[J].Journal of Fisheries of China,2000,24(5):442-447.
Authors:JIANG Hong bo
Institution:JIANG Hong bo 1,CHEN Li qiao 1,ZHOU Zhong liang 1,CHEN Min 1,ZHU Jun 2
Abstract:The effects of rotifer, Branchionus plicatilis , and Artemia nauplii on the development and survival in the Chinese mitten - handed crab were investigated during the larval developmental stages. The results showed that rot ifer is a kind of appropriate feed for the early zoeal larval culture ( Z1 and Z2 ) , their development and survival may be affected by the amount of feed, the survival rate of the crab larvae increased gradually with increasing of amount of the rotifer, but it decreased when exceeding the optimal amount . The highest survival rate of the larva was gained by fed with the rotifers at 40ind..mL - 1 in HUFA - enriched group, and at 60 ind..mL- 1 in control group respectively. However, all groups fed on rotifer only showed high mortality in postlarval stages ( Z3, Z4, Z5, M) . Nevertheless, Artemia is a kind of suitable diet for the postlarvae of the crab, when the larvae were fed with Artemia at 10 ind..mL- 1 instead of the rotifer, higher larval survival rate and normal metamorpho sis to megalopa could be expected. The experimental results show that HUFA in feed inf luence significantly the development and survival of the crab larvae, and the survival and molting rate can be improved by enriching HUFA especially EPA and DHA in feed of larval stage.
Keywords:Eriocheir sinensis  larvae  development  survival rate  feed
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