寄给天国里的父亲

父亲，今天是女儿的生日，三十二岁。还记得么?三月的天居然渐淅沥沥的下起了小雨，女儿漫无目的的在街上游走，却在不知不觉中走到了咱们的老家。站在油漆剥落的大门外，一时间，模糊了所有的时间和空间，往事却那么执著的涌上心头。     

南海蔓足甲壳动物两新种和一新纪录

于1986,1987年在南海珠江口浮标上采到(严文侠采)无柄蔓足甲壳动物标本。经本文作者鉴定,系两新种——珠江藤壶Balanus zhujiangensis sp. n.、美丽藤壶 Balanus pulchellus sp. n. 和一新记录——皮氏小笠藤壶Tetraclitella pilsbryi (Utinomi,1962)。新种模式标本保存于中国科学院海洋研究所。     

Genetic relationship between Neobenedenia girellae and N. melleni inferred from 28S rRNA sequences

The fragments of 350 bp in 28S rRNA from the closely related monogenea of trematoda, Neobenedenia girellae and N. melleni are obtained by polymerase chain reaction (PCR) amplified using a couple of special primers and then sequenced. The results show that the comparison of 28S rRNA sequences, with only a base varying in 337 bp accounting for 0.3% genetic difference, from the relative species N. girellae and N. melleni parasitized on the different fishes in different farms displays that they possess a very high genetic similarity of 99.7%, higher than that of 99.41% for the single species N. melleni sampled in different areas, and the intraspecific divergence of N.melleni is 0.59%. Meanwhile, the interspecific differences between the two Neobenedenia and three Benedenia (i.e., B. lutjani, B. rohdei and B. seriolae) range from 2.08% tol 1.73%. In addition, UPGMA and MP molecular phylogenetic trees are constructed and proved to be consistent with each other. Though the morphological characteristics and the results of genetic diversity for the two Neobenedenia show a high similarity, whether they belong to a single species or not are still undefined, and the more genes of them should be further investigated, in combination with the systematical and detailed morphological study.     

西太平洋马里亚纳海沟附近海山的金相柳珊瑚属(珊瑚虫纲:软珊瑚目:金柳珊瑚科)二新记录种

为探究热带西太平洋海山生物多样性,2016年利用"发现"号遥控无人潜水器(ROV)对西太平洋马里亚纳海沟附近的M2海山进行了采样调查,其中获得了3个深水金相柳珊瑚样本。通过光学显微镜和扫描电镜观察,鉴定其为黑发金相柳珊瑚Metallogorgia melanotrichos(WrightStuder,1889)和长刺金相柳珊瑚Metallogorgia macrospina Kükenthal,1919。这两种金相柳珊瑚均为该区域的新记录种,对其作了详细的形态描述,并依据特征性状对该属所有物种作了分类检索。     

NEW OBSERVATIONS ON THE MEIOTIC PROCESS IN THE MARINE DINOFLAGELLATE NOCTILUCA SCINTILIANS （NOCTILUCALES, DINOPHYCEAE）

The meiotic process in Noctiluca scintillans were observed under light microscope.Some abnormal cell divisions, incompletely separated “zoospores” and the changes of the zoospores are described in this paper. Together with the fmdings of field samplings and the previous results by other researchers, the process of meiosis in N. scintillans was supposed to be a pathway to reduce the extra high density of NH3-N within the cell in order to ensure normal population growth.     

基于数字岩心岩石电性数值模拟方法综述

以致密砂岩为代表的非常规油气储层,由于具有低孔低渗、孔隙结构复杂及岩心致密等特点导致岩石物理实验测量周期长、成本高、岩心驱替困难,难以定量研究微观参数对电阻率的影响.以X射线CT扫描为基础发展起来的数字岩心岩石物理属性模拟技术则弥补了这种不足.本文系统总结了基于数字岩心电性数值模拟基尔霍夫、随机游走、格子玻尔兹曼、有限元等方法的优缺点;列举了国内外学者的研究实例及取得的进展;探讨了目前电性数值模拟研究中存在的主要问题;同时指出了数字岩心电性数值模拟的发展方向.     

8.4 ka以来纳木错湖芯介形类组合的环境变化意义

A 332-cm long lacustrine core was drilled in the Nam Co in the central-southern part of the Tibetan Plateau. From the core, 15 species of ostracods (Crustacea: Ostracoda), which belong to 6 genera have been identified. According to the variations of the ostracod assem-blages and the ostracods ecological features, which are sensitive to the changing environ-ment, three main stages can be distinguished as follows: Stage I was from 8400 to 6800 a BP, during which the climate was cold-humid, and the lake depth changed from shallow to deep. Stage II was from 6400 to 2500 a BP, during which the climate changed from warm-humid to cold-humid, and then to cold-dry. The lake depth gradually became deep. The shifting of cli-mate, from wet-cold to dry-cold during this period, had constructed the basis of present en-vironment in the Nam Co. Stage III was from 2500 a BP to the present, which showed a trait of lake depth increasing. At the earlier period of this stage, the climate kept as cold-dry as that in the former stage, but the salinity of the lake increased. At the later period of this stage, the degree of cold-dry was enhanced, and the activities of land surface runoff tended to be weakened. Our research also found that the peak values of ostracods with black shell was coherent with the maximum production of the ostracods, and agreed with the increasing sedimentary water dynamics. This indicated that the ostracods with black shell was simulta-neous with the high prolificacy of ostracod, and transported from other places. The abun-dance of Candona juvenile shells reflected the high mortality of that kind of ostracods under an unfavorable condition. This was probably a result of the rapid change of water dynamics of sedimentary environment.     

柳珊瑚分子系统发育学的研究进展

珊瑚分子系统发育学研究始于90年代初,用于柳珊瑚分子系统学研究的主要分子标记是线粒体DNA和核糖体RNA。本文在重点介绍了柳珊瑚种群遗传多样性和柳珊瑚种上阶元系统发育学两方面的研究进展和所取得研究成果的同时,也讨论了珊瑚虫纲的系统发生关系。最后在简单引述了柳珊瑚分子系统发育学同传统形态分类学方法之间关系的同时,也对柳珊瑚分子系统发育学今后的重点研究方向做了预测。     

On new species and records of Hydroidomedusae from the Changjiang River Estuary and its adjacent waters

1 IntroductionSamples of medusae collected from 37 stationsof the Changjiang River Estuary ( 28°0. 00′~32°19.60′N,121°6.52′~124°0.00′E) during14 ~16 June 2003,Altogether,164 qualitative andquantitative samples of the plankton are analyzed,and 49 s     

南海北部海区有柄蔓足类的生态特点

于1986－1991年，在南海北部对17个海洋结构物进行调查，以了解有柄蔓足类的种类组成、分布状况和个体大小。结果表明，所采集的标本有2科4属8种，它们分别是茗荷属的荷、鹅荷和印度荷；条荷属的细板条荷、条荷和百条荷；软荷属的太平洋软荷及异荷属的日本异荷。荷、鹅荷和细板条荷几乎分布在所有浮标站，其附着密度随着离岸距离的增加而增大；荷和鹅行可分别在0－80m和0－75m水层中分布，而细板条荷则从表层一直分布到150m深处。该类生物属外海性种类，只附着在漂浮或能移动的物体表面，而不栖息于固定式海洋结构物。