厦门隔膜水母染色体初步分析

厦门膈膜水母(lEuCkArTIArAHOEPPlIIHSu)隶属于腔肠动物门水螅水母类,该类有一个重要特征就是其生活史中有世代交替现象,长期以来,许多研究者曾把同一种类不同世代的水螅体和水母体分成二个种,产生双重分类的混乱现象,给分类工作造成困难。近年来,已逐步通过生活史的研究,为水螅水母类建立统一分类系统提供依据。本文利用物种间染色体的差异,来探讨水螅水母统一分类系统的疑难问题以及物种间的亲缘关系,有关腔肠动物染色

Biological process of phosphorus turnover in surface water body of Xiamen Harbor. Ⅱ:Grazing pressure of copepod on phytoplankton

为了解桡足类在磷的生物地球化学循环中的作用,于2005年5、8、11月和2006年3月分别在厦门时间序列站(XMTS)采用肠道色素法,研究了桡足类对浮游植物的现场摄食率,同步分析了桡足类的种类组成和数量变化,进而得到桡足类群体对浮游植物的摄食率.结果表明:厦门港桡足类对浮游植物的年平均摄食率为55.53μg.m-3.d-1;其中秋季最高,为108.98μg.m-3.d-1,夏季最低,为7.18μg.m-3.d-1.根据试验数据估算,厦门港桡足类对浮游植物现存量的摄食压力四季平均为1.81,春、夏、秋、冬分别为3.22、0.06、3.52和0.46.To understand the roles of copepod in the biogeochemical cycling of phosphorus,gut fluorescence method was applied to examine in situ the grazing rate of copepod on the phytoplankton in Xiamen Time Station(XMTS) in May,August and November 2005 and March 2006.In the meanwhile,the abundance and species composition of copepod were investigated,and the grazing pressure of copepod on the phytoplankton was estimated.The results showed that the annual average grazing rate of copepod was 55.53 μg·m-3·d-1,being the highest(108.98 μg·m-3·d-1) in autumn and the lowest(7.18 μg·m-3·d-1) in summer.Based on the estimation from our experimental data,the daily grazing rate of copepod populations on the phytoplankton in Xiamen Harbor was,on annual average,about 1.81% of the phytoplankton's standing stock,with the values in spring,summer,autumn,and winter being 3.22%,0.06%,3.52% and 0.46%,respectively.国家自然科学基金资助项目(40376021

Comparison on karyotype of Minxiangli(Channa maculata♀×C. argus♂) and its parents

以闽香鳢及其亲本乌鳢和斑鳢为材料,取头肾做3种鱼的染色体组型图,发现闽香鳢染色体数为45,是亲本配子染色体数之和;通过染色体组型分析发现闽香鳢的染色体组型公式为2n=3m+6sm+36st,t,臂数NF=54,个别染色体可分辩出其来源。研究表明,闽香鳢遗传了其父本、母本各一套的染色体(n),是斑鳢与乌鳢的杂交种;染色体数和闽香鳢1号特异染色体可做为闽香鳢的鉴定指标。随机取样发现子一代闽香鳢存在性腺发育Ⅲ期以上的雌性个体,而未发现有性腺成熟的雄性个体,可能存在雄性不育。According to karyotype diagram of the first filial generation (Channa meculorta♀×C. argus♂) and their parents, the number of chromosomes in the first filial generation (called Minxiangli) is 45, which is equal to the sum of those in their parents gametid. Karyotype analysis turns out that the formula for karyotype of Minxiangli is 2n=3m+6sm+36st,t, NF=54, and that several chromosomes could be distinguished their origin. Therefore, it concludes that Minxiangli respectively inherits a suit of chromosomes from their parents, which is the hybrid of C. argus and C. meculorta, and that the number of chromosomes and the No.1 special chromosome of Minxiangli could become identification indexes of Minxiangli. In addition, it is found by random sample that there are female individuals in the first filial generation whose sex gland growth is beyond the third period, but no male individuals whose sex gland is mature. It may be deduced that the male individuals are sterile in the first filial generation.福建省科技厅(2002-50

Preliminary study on feeding habits and trophic niche of nine economic fish species in Beibu Gulf in summer

应用Shannon-Wiener指数、Levins指数和均匀度指数,分析了北部湾2012年7月9种个体数量占优势的经济鱼类的食物组成和食性类型,并对其营养生态位进行了初步研究。研究表明,这9种经济鱼类可划分为3种食性类型:日本发光鲷Acropoma japonicum、日本竹筴鱼Trachurus japonicus、蓝圆鲹Decapterus maruadsi和六指多指马鲅Polydactylus sextarius为浮游生物食性,主要以桡足类为食;二长棘犁齿鲷Evynnis cardinalis、日本鲱鲤Upeneus japonicus和刺鲳Psenopsis anomala为底栖生物食性,主要以长尾类为食;多齿蛇鲻Saurida tumbil和白姑鱼Pennahia argentata为游泳动物食性,以鱼类饵料占较大优势。9种鱼中,白姑鱼的营养生态位宽度值最高,多齿蛇鲻的营养生态位宽度值最低。夏季北部湾这9种经济鱼类的营养生态位宽度与其摄食习性和饵料基础密切相关。In this study, based on fish samples collected in Beibu Gulf in July 2012, diet composition, feeding habits and trophic niche breadth of nine economic fish species were analyzed using the Shannon-Wiener index, Levins index and evenness index. Results showed that nine economic fish species could be classified into three types according to feeding habits, referred to as plankton predators(including Acropoma japonicum, Trachurus japonicus, Decapterus maruadsi, and Polydactylus sextarius), benthic predators(including Evynnis cardinalis, Upeneus japonicus and Psenopsis anomala) and nekton predators(Saurida tumbil and Pennahia argentata). Trophic niche breadth of Pennahia argentata was the highest(Shannon-Wiener index=0.938 and Levins index=2.238), while trophic niche breadth of Saurida tumbil was the lowest(Shannon-Wiener index=0 and Levins index=1). The trophic niche breadth of the nine economic fish species in summer in Beibu Gulf was strongly influenced by feeding habits and feeding foundation of surrounding environments.国家海洋公益项目(201005012)~

ADVANCES IN CHROMASOME RESEARCH IN MARINE ZOOPLANKTON IN CHINA

国家自然科学基础研究重大项目G1999043708

Cross-domain neurobiology data integration and exploration

<p>Abstract</p> <p>Background</p> <p>Understanding the biomedical implications of data from high throughput experiments requires solutions for effective cross-scale and cross-domain data exploration. However, existing solutions do not provide sufficient support for linking molecular level data to neuroanatomical structures, which is critical for understanding high level neurobiological functions.</p> <p>Results</p> <p>Our work integrates molecular level data with high level biological functions and we present results using anatomical structure as a scaffold. Our solution also allows the sharing of intermediate data exploration results with other web applications, greatly increasing the power of cross-domain data exploration and mining.</p> <p>Conclusions</p> <p>The Flex-based PubAnatomy web application we developed enables highly interactive visual exploration of literature and experimental data for understanding the relationships between molecular level changes, pathways, brain circuits and pathophysiological processes. The prototype of PubAnatomy is freely accessible at:[<url>http://brainarray.mbni.med.umich.edu/Brainarray/prototype/PubAnatomy</url>]</p

The assemblage and abundance distribution of jellyfish in northern Beibu Gulf

根据“908“专项北部湾2006—2007年四个季节的调查数据,分析了北部湾北部(20°n以北海域)水母类的种类组成、数量分布、优势种和群集结构特征及其环境影响因子。该区共记录水母类4类125种,分别为水螅水母类99种、管水母类17种、钵水母类4种和栉水母5种;以沿岸暖水种为主,占本区水母总种数的61.6%,其次是大洋暖水种,占37.6%,沿岸暖温种仅占0.8%。种数季节变化呈单峰型,夏季83种,冬季56种,秋季和春季各49种,四季均以水螅水母类为主。周年丰度变化呈单峰型,夏季(943.0个/M3)>春季(572.4个/M3)>冬季(548.2个/M3)>秋季(427.6个/M3)。拟细浅室水母、双生水母、球型侧腕水母、四叶小舌水母、半口壮丽水母、两手筐水母、异摇篮水母、双小水母、单囊美螅水母、疣真囊水母、半球美螅水母、六幅和平水母、八囊摇篮水母、刺胞真囊水母、黑球真唇水母、端粗范式水母和细颈和平水母共17种全年出现,为四季种;其中,前7种为四季优势种,优势度(y)分别为0.25、0.19、0.09、0.08、0.05、0.03和0.03,各季节的优势种演替模式不尽相同。依据水母种类和数量分布情况,北部湾北部水母类可划分2个群集:栖息在受沿岸流影响的20 M以浅的低盐群集,代表种有拟细浅室水母和双生水母等;栖息在受外海水影响的20 M以深的高盐群集,代表种有四叶小舌水母、半口壮丽水母和两手筐水母等。海流与水团的消长是影响水母类群集结构和水平分布格局的重要影响因素。The assemblage structure and abundance distribution of jellyfish were studied based on the samples of Beibu Gulf during 4 seasons in 2006—2007.The environmental factors that probably affected the number of species,abundance and assemblage structure were analyzed.The study showed that a total of 125 jellyfish species were identified,which belongs to4 assembleges,they were Hydromedusae,Siphonophora,Scyphomedusae and Ctenophore.Hydromedusae was the dominant assemblege,accounted for 79.2% of the total species.The species number of jellyfish varied seasonally,there was 83 in summer,which was the highest among 4 seasons,followed by winter,autumn and spring,the species number were 56,49 and 49.The 20 meters deep of water could be considered as the boundary according to the horizontal distribution of jellyfish species,the species number of the above was more than the under.There were three ecological groups of the jellyfish,the neritic warm-water group such as Lensia subtiloides,Diphyes chamissonis and Pleurobrachia globosa was the dominant group,accounted for 61.6% of total species, followed by the high-temperature oceanic group, occupied 37.6%, Liriope tetraphylla,Aglaura hemistoma and Solmundella bitentaculata were belonged to this group,and there was only one neritic low-temperature specie identified,that was Ocyropsis crystallina.The abundance of jellyfish varied seasonally,was highestin summer,followed by spring,winter and autumn.The abundance in the northwest of the studied area was higher,and the northern of Weizhou Island was lower,basiclly less than 10.0 ind / m3.There were 17 seasonal species which appeared the whole year,7 of them were dominant species,Lensia subtiloides,Diphyes chamissonis,Pleurobrachia globosa and Liriope tetraphylla were the most important.Lensia subtiloides got the largest abundance in summer,made contributions to 40.4%of the sum.Diphyes chamissonis' abundance was large in spring and winter,occounted for 36.3% and 32.6% of the sum in each season.The abundance of Liriope tetraphylla in autumn occupied 36.7% of the sum,was far more than the other three seasons.Pleurobrachia globosa' abundance in 4 seasons changed not much compared to the 3 mentioned species,was largest in summer,occupied 12.2% of the sum.The assemblage of jellyfish in northern Beibu Gulf was analyzed based on the effect of 10 factors,they were deeper( D,m),surface temperature( Ts,℃),middle temperature( Tm,℃),bottom temperature( Tb,℃),surface salinity( Ss),middle salinity( Sm),bottom salinity( Sb),surface chlorophll a( Chas,mg / m3),middle chlorophll a( Cham,mg/m3) and bottom chlorophll a( Chab,mg/m3).Though the results showed details difference in 4 seasons,it could be divided into two groups,the low-salinity group( lower than 20 m) and highsalinity group( deeper than 20 m) formed northern Beibu Gulf jellyfish assemblage structure.The low-salinity group was mainly affected by the coastal current from Guangxi to Vietnam,this group had two types depended on temperature,they were the neritic low-temperature type and the neritic warm-water type.The high-salinity group was mainly affected by the seawater.The environmental factors varied during four seasons.Currents and water masses were the main factors on jellyfish assemblage and abundance distribution.我国近海海洋综合调查与评价专项(908-01-ST09); 海洋公益项目“东南沿海半封闭海湾生态系统对人类活动干扰的响应评价、生态重构技术及示范”(201005012); 国家自然科学基金(41006078

海洋浮游动物学研究

【中文摘要】 中国的海洋浮游生物学由我校已故科学家郑重、金德祥教授创建于本世纪 4 0年代 .近 10年来 ,该领域继续取得一批研究成果 ,促进了我国海洋浮游生物学的发展 .在浮游动物生物学方面 ,揭示了台湾海域及其邻近海域浮游动物多样性 ,发现水母类 39个新种 ,桡足类 2个新种 ,并对浮游动物生态类群、群落结构、微小型浮游动物在生态系统中的地位和作用等基础生态学取得了系列成果 .同时 ,开展了实验生理生态学及个体生物学研究 .其中 ,浮游动物生化组成与生理生态功能、浮游桡足类卵型与滞育、浮游动物能学、主要浮游动物染色体、生活周期与世代 ,摄食生态 ,经济贝类幼体附着与变态等研究 . 【英文摘要】 In China, Marine planktology was founded by late biologists Zheng Zhong and Jin Dexiang in 1940s. Since then Chinese planktologists have been devoting themselves to develop the subject. For years, we researchers of marine zooplankton in Xiamen University more actively engaged in studies on biology of marine zooplankton in Taiwan Strait and its adjacent waters and obtained plentiful and substantial achievements in this field. Our outstanding work, especially for the past decade, potentially promoted the deve...国家自然科学基金重点!(49636220); 国家自然科学基金重大(G19990437); 国家自然科学基金!(39800021)资助项

中华哲水蚤不同地理种群苹果酸脱氢酶(MDH)的比较

国家自然科学基础研究重大课题资助项目G1999043708 号 ;; 国家自然科学基金项目40076034

海洋浮游甲壳类分子系统学研究进展

回顾海洋浮游甲壳类系统学研究的基础上，综述了生化水平和 DNA (mtDNA 和核 DNA) 水平的分子系统学研究现状。分子标记中 DNA 序列分析最为常用，其次是 RFLP 和 RAPD 分析，mtDNA 主要应用于分类学、群体遗传学、种间分子进化和系统发育重建研究，而核 DNA 则应用于科以上较高阶元的系统发育和种内、近缘种间的遗传结构和遗传分化研究。最后对存在的问题和应用前景进行了展望。 【英文摘要】 Molecular systematics of marine planktonic crustaceans started in 1970s , and isozyme was the major method before the 1990s, its contents including genetic structure and genetic differentiation. Since the early 1990s, molecular markers (RAPD, RFLP especially DNA sequences) based on DNA and mtDNA have been widely used to study four parts of the systematics (classification, population genetics, phylogenetic reconstruction and molecular evolution) of marine planktonic crustaceans. The present situation and ap...国家重点基础研究发展规划项目（编号 G1999043708 号）资