Species Diversity and Community Dynamics of Phytoplankton in Coastal Waters of Hong Kong

中文摘要香港海域是我国的赤潮高发区之一，浮游植物的长期监测是海洋环境调查、海水水质监测、赤潮研究的基础。本论文通过对2000年、2002年和2004年，分春、夏、秋、冬四个季节在香港海域采集的浮游植物样品的种类鉴定分析，对香港海域浮游植物的种类多样性、种群分布特征和群落组成结构与动态及其与环境因子的关系等进行了研究，并从生态学角度探讨了香港海域浮游植物群落结构及变动的规律和主要机制。结果如下：1．香港海域的盐度在平面分布上有显著的地理差异。根据受珠江口淡水的影响程度，将香港海域分成东部、中部、南部和西部水域，受珠江口淡水影响的程度由西向东逐渐减弱，形成了西部河口性质的水域和东部海洋性质的水域，...Abstract Hong Kong is one of the coastal areas with frequent red tide events, and long-term monitor for phytoplankton is the foundation for marine environment investigation, water quality control and the red tide studies. In the present studies, various phytoplankton samples were collected and analyzed from the coastal waters of Hong Kong, in four seasons of 2000, 2002 and 2004. Through the specie...学位：理学硕士院系专业：生命科学学院生物化学与生物技术系_微生物与生化药学学号：X20032600

香港海域2004年浮游植物群落结构特征

根据2004年冬、春、夏和秋季对香港海域(东部、中部、西部和南部水域共取7个站位)的浮游植物进行采样调查,分析了香港海域浮游植物的种类组成、丰度、优势种、群落组成、多样性和均匀度等群落特征。2004年香港海域的浮游植物共鉴定了73属196种(含变种和变型),其中潜在赤潮种88种,丰度范围在9.17×103cells/L～8.56×106cells/L之间,平均值为9.51×105cells/L。丰度的周年变化曲线呈单峰型,夏季高,秋冬季节低。香港海域的浮游植物种类多样性较高,以暖水性和广分布性种类为主;浮游植物群落与上世纪70年代相比,仍以硅藻为主导,但甲藻和微型隐藻的优势有所增加。由于海洋环境特点的不同,香港不同海域的群落组成差异显著

大亚湾水域两种拟菱形藻的形态学鉴定及毒素分析

对2005年分离自广东大亚湾的两种潜在产毒拟菱形藻进行了形态学观察和毒性分析.通过透射电子显微镜(TEM)观察确认藻种为细弱拟菱形藻(Pseudo-nitzschia cuspidata)和多纹拟菱形藻(P.multistriata).采用高效液相色谱法(HPLC)对这两种藻的常规培养样进行软骨藻酸毒素检测,结果均未检测到软骨藻酸.鉴于以上两种拟菱形藻存在着潜在产毒特性,不同培养条件的诱导实验尚需继续

Progress and Measures of Study on the Cause of Abalone Larva Death

本文从细菌、病毒和寄生虫导致的病害,底栖硅藻膜、鲍苗的种群密度、水环境中的理化条件、赤潮等方面入手,综述了国内外学者近几年对鲍苗死亡原因的研究进展,并提出相应的防治对策。This paper deals with the disease caused by bacteria,virus and parasite,the membrane of benthic diatoms,the population density of abalone larva,physical-chemical conditions in water and red tide,sums up the progress of study on the cause of abalone death,and proposes relevant preventive measures

Nutritional component analysis and quality evaluation of Sinonovacula rivularis from Changle sea area of Fujian

测试分析了福建长乐海域近江蛏(SInOnOVACulA rIVulArIS)新鲜软体部的营养成分,并与部分经济蛏类进行比较.结果表明,近江蛏软体部的出肉率为48.1%±6.0%,软体部中的水分、蛋白质、脂肪和灰分质量分数分别为84.9%、9.4%、1.6%、1.4%.近江蛏软体部中含有人体所需的17种氨基酸(除色氨酸未测外),氨基酸含量为74.0 Mg/g,必需氨基酸(C EAA)占氨基酸总量(C TAA)的37.2%,鲜味氨基酸(C fAA)占氨基酸总量(C TAA)的49.6%,17种氨基酸中谷氨酸(glu)含量最高.根据AAS和CS评价,第一限制性氨基酸为苯丙氨酸(PHE).赖氨酸(lyS)的AAS评分最高,超过fAO/WHO模式和鸡蛋蛋白质.软体部的必需氨基酸指数(I EAA)为100.06,必需氨基酸(EAA)与非必需氨基酸(nEAA)的比值(C EAA/C nEAA)为59.1%,必需氨基酸(EAA)与氨基酸总量(C TAA)的比值(C EAA/C TAA)为37.2%,构成比例均接近fAO/WHO提出的优质蛋白质标准.近江蛏软体部和足部的多不饱和脂肪酸(PufA)含量高于饱和脂肪酸(SfA)的含量,多不饱和脂肪酸(PufA)中又以高度不饱和脂肪酸(HufA)的组成为主,并且n-3PufA的含量明显高于n-6 PufA的含量;dHA和EPA含量丰富,软体部的EPA与dHA质量分数分别为4.4%、3.0%,EPA含量高于dHA的含量,两者之和分别占多不饱和脂肪酸(PufA)的80.4%、81.1%.近江蛏足部的PufA含量、C n-3/C n-6比值以及C EPA+C dHA之和均高于软体部.近江蛏软体部中含有丰富的矿物质元素,尤其是zn、SE含量十分丰富.表明近江蛏肌肉具有较高的营养价值.建议对近江蛏等底栖性贝类在食用前进行蓄养净化,并对其进行消费安全和人体健康风险评价.The nutritional composition in the muscle of Sinonovacula rivularis was analyzed and compared with that of some high quality razor clams.The results showed that the contents of flesh,water,crude protein,fat and crude ash in the clam were 48.1% ± 6.0%,84.9%,9.4%,1.6%,and 1.4%,respectively.Seventeen amino acids which the human body needs( except tryptophan which had not been tested) are found in its edible part.The content of amino acids in the fresh edible part is 74.0 mg / g,C EAA is 37.2% of the total content of amino acids while C FAA is 49.6% of the total.The content of glutamic acid is the highest among seventeen amino acids.According to the evaluation of AAS and CS,the first limited amino acid is phenylalanine.The AAS of lysine is highest rated, which is better than the module of the FAO / WHO and the standard of egg protein.The index of essential amino acids( I EAA) is 100.06 in the soft part.The ratio between the EAA and non-essential amino acids( NEAA) is 59.1%.The ratio between C EAA and the total content of C TAA is 37.2%.The percentages of the structure are close to the standard of the top-quality protein proposed by FAO / WHO.The PUFA content of the unsaturated fatty acid( UFA) of edible part and the foot part of the clam is higher than that of SFA.The structure of PUFA is main part of the HUFA( highly unsaturated fatty acids) and the content of n-3PUFA is obviously higher than that of n-6PUFA.The contents of DHA and EPA are rich.The mass fraction of EPA and DHA in the edible part is 4.4% and 3.0% respectively.The content of EPA is higher than that of DHA.The total contents of two account for 80.4% and 81.1%,respectively,of the PFA.The PUFA content of the clam foot,the ratio between n-3 and n-6,and the sum of EPA and DHA are all higher than those of edible part.The edible part of the clam is full of mineral elements,especially for the high contents of Zn and Se,which indicate that the meat is of highly nutritional.However, when taken filter-feeding bivalves as food,such as the clams,S.rivularis,sanitation and consumer health risk valuation are suggested.福建省发展和改革委员会农业“五新”推广资助项目(闽发改农业2010-452

中国海区几种隐藻类鞭毛藻的扫描电镜观察(英文)

报道了来自香港吐露港、中国长江口及厦门港的3个属的3种隐藻及1个变种, 即半片藻Hemiselmis sp. Novarino、伸长斜片藻Plagioselmis prolonga Butcher ex Novarino, Lucas & Morrall、伸长斜片藻北方变种Plagioselmis prolonga var. nordica Novarino, Lucas & Morrall、尖尾全沟藻Teleaulax acuta (Butcher) Hill, 并对每个种类的分类特征、生态分布进行描述, 同时提供每个种的光镜和扫描电镜照片。其中, 半片藻属Hemiselmis Parke是中国海区首次记录的属, 而伸长斜片藻Plagioselmis prolonga和尖尾全沟藻Teleaulax acuta可以引发赤潮