不同饵料、密度和池底对锯缘青蟹大眼幼体蜕皮变态的影响

实验观察了不同饵料、池底、密度对锯缘青蟹大眼幼体蜕皮变态率和残杀率的影响.实验结果表明:投喂裸腹蚤时,大眼幼体蜕皮变态率最高,3种池底大眼幼体蜕皮变态率平均为 78.1%,残杀率最低平均为 11.4%;海泥池底大眼幼体蜕皮变态率最高,投喂3种饵料的大眼幼体蜕皮变态率平均为84.8%,残杀率最低平均为7.6%;裸腹蚤是青蟹大眼幼体培育适宜的饵料,而海泥则是大眼幼体变态适宜的池底.不同培育密度对青蟹大眼幼体蜕皮变态率和残杀率的实验结果表明:当大眼幼体的培育密度为3 尾/dm3 时,其蜕皮变态率最高,而残杀率与大眼幼体培育密度的关系不明确. 【英文摘要】 Effects of different dietary,densities and substrata on metamorphosis rate and cannibalistic rate from protozoea 1 (PZ1) to postlarvae 1(PL1) stages of Scylla serrata megalopae were studied in two separate experiments.In the first experiment,three dietary:Monia mongolica,minced meat of Ruditapes philippinaram which filted through mesh and haima 0 shrimp stuff and three substrata:sea mud,sand and cement were investigated.It showed that the metamorphosis rate of megalopae was higher when it was fed Monia mong...国家海洋 863 项目“锯缘青蟹大规模人工育苗技术”(2002AA603013)资

STUDY ON THE TECHNIQUE OF ARTIFICIAL BREEDING OF Scylla serrata

锯缘青蟹(Scylla serrata)是我国南方地区主要的经济蟹类之一,名优养殖品种。随着青蟹养殖技术的改进和养殖规模的扩大,特别是虾池综合养殖模式迅速的推广,捕捞自然蟹苗已远不能满足生产的需求,青蟹苗种已成为养殖青蟹、甚至南方部分地区虾池养福建省重中之重项目“海洋生物优良种质和生物活性物质的应用基础研究

Aquaculture of the Mud Crab(Scylla spp.) in Inshore Shrimp Ponds Throughout Southern China

【中文摘要】 根据调查和笔者的多年实践,本文从苗种、养殖模式等方面评述我国南方沿海虾塘的青蟹养殖的概况,指出虾塘青蟹养殖是滩涂虾塘养殖走出困境的有效途径.分析讨论了人工育苗、人工苗的中间培育、养殖模式、饲料及育肥等方面存在的问题,指出了解决这些问题的可能途径,为虾塘青蟹养殖的可持续发展提供参考意见. 【英文摘要】 Aquaculture of mud crab(Scylla spp.) in inshore shrimp ponds has been expanded progressively for the past 15 years throughout Southern China.It offers a number of benefits over shrimp culture.Mud crab culture provides a reliable income for fishermen,as the crab survival is high because of superior adaptation to inshore shrimp ponds environment and has a lower disease risk than shrimp which being associated with white spot syndrome and other bacterial disease.Catching,nursing,transports and deals of wild mud...国家863项目(2002AA603013)资

Studies on overwintering of juvenile mud crab,Scylla serrata in mud pond

【中文摘要】 本文报道1993年和1994年秋季作者培育的部分锯缘青蟹仔蟹苗土池越冬试验。结果表明：人工培育的青蟹苗在闽南地区的自然条件下，可以在室外土池安全越冬，成活率可达60％～80％，水温是影响青蟹生命活动的主要因素；由于越冬期间青蟹营养积累不足，导致难以顺利地完成越冬后的第一次生长蜕壳，造成大量死亡，这是影响青蟹越冬存活率的主要因素之一；越冬后期病死青蟹肝胰组织进行涂片处理，发现6只受检蟹中有2只肝胰组织中有日本对虾杆状病毒抗体所催化的棕色细胞存在，表明这两只青蟹受该病毒的感染，占受检青蟹的1／3。本文还就如何提高秋苗养殖的经济效益和生态效益的问题进行了讨论。 【英文摘要】 The overwintering culture of juvenile Scylla serrata in mud pond was investagated. TheResults are as follows. (1) The juvenile crabs cultured in autumn can successfully overwinter in natural conditions in the south of Fujian Province with a surviral rate of 60% ~80%.The water temperature is a main factor of influence on the survival of Junenile crab, (2) Thelow nutritional accumulation in juvenile crab due to poor food condition during the wintercaused many crabs dead because they could hardly finish thelr ...福建省自然科学基金资!9501

Effects of Diets,Densities and Substrata on Metamorphosis Rate to Postlarvae of Scylla serrata Megalopae

实验观察了不同饵料、池底、密度对锯缘青蟹大眼幼体蜕皮变态率和残杀率的影响.实验结果表明:投喂裸腹蚤时,大眼幼体蜕皮变态率最高,3种池底大眼幼体蜕皮变态率平均为 78.1%,残杀率最低平均为 11.4%;海泥池底大眼幼体蜕皮变态率最高,投喂3种饵料的大眼幼体蜕皮变态率平均为84.8%,残杀率最低平均为7.6%;裸腹蚤是青蟹大眼幼体培育适宜的饵料,而海泥则是大眼幼体变态适宜的池底.不同培育密度对青蟹大眼幼体蜕皮变态率和残杀率的实验结果表明:当大眼幼体的培育密度为3 尾/dm3 时,其蜕皮变态率最高,而残杀率与大眼幼体培育密度的关系不明确. 【英文摘要】 Effects of different dietary,densities and substrata on metamorphosis rate and cannibalistic rate from protozoea 1 (PZ1) to postlarvae 1(PL1) stages of Scylla serrata megalopae were studied in two separate experiments.In the first experiment,three dietary:Monia mongolica,minced meat of Ruditapes philippinaram which filted through mesh and haima 0 shrimp stuff and three substrata:sea mud,sand and cement were investigated.It showed that the metamorphosis rate of megalopae was higher when it was fed Monia mong...国家海洋 863 项目“锯缘青蟹大规模人工育苗技术”(2002AA603013)资

RECENT ADVANCES AND FUTURE TRENDS IN MICROEXPRESSION RESEARCH

微表情是人类试图压抑或隐藏真实情感时泄露的非常短暂的、不能自主控制的面部表情。作为识别谎言的有效线索,微表情可应用于安全、司法、临床等领域。本文概述微表情识别的研究情况,包括微表情识别的心理学研究、自动微表情识别研究和微表情数据库的构建要求,以及微表情表达的研究进展,并展望微表情研究的未来发展方向

2013年中国植物科学若干领域重要研究进展

2013年中国植物科学研究继续快速发展。中国科学家在植物科学多个领域中取得了大量的原创性、高水平研究成果,包括水稻(Oryza sativa)株型调控的激素信号转导机制、水稻育性的遗传调控机理、重要物种的基因组解析、植物天然免疫分子机制的结构生物学研究以及植物生态与环境生物学等。该文对2013年中国本土植物生命科学若干领域取得的重要研究进展进行了概括性评述,旨在全面追踪当前中国植物科学领域发展的最新前沿和热点事件,并展现我国科学家所取得的杰出成就