1) free-living marine nematodes
自由生活海洋线虫
1.
The study on the community of free-living marine nematodes in Fenglin mangrove wetlands,Xiamen,China;
厦门凤林红树林湿地自由生活海洋线虫群落的研究
2.
The results showed that the free-living marine nematodes and copepods were the dominant group.
2002-09-10—2003-02-26期间6次采样,对厦门高崎3口虾池小型底栖动物的数量变动、生物量变化及水平分布进行了初步研究,结果表明:自由生活海洋线虫和桡足类是虾池中小型底栖动物的主要类群。
3.
The number of species, Margalef s species richness index "d", Simpson Dominance index "λ", Shannon -Wiener diversity index H , Pielou s evenness index "J", Hill s diversity numbers (N1, N2, N + ∞) , taxonomic diversity indexΔ, taxonomic distinctness Δ* and Δ+ were compared using free-living marine nematodes sampled on 2 occasions from an extensive grid of 20 stations in the Bohai Sea.
首先介绍Warwick和Clarke(1995)提出的等级生物多样性指数以及在自由生活海洋线虫中的应用,重点以1998年9～10月和1999年4～5月两个航次的沉积物样品,用物种数目(S)、Margalef物种丰富度指数(d)、优势度Simpson指数(λ)、多样性Shannon-Wiener指数(H＇)、Pielou的均匀度指数(J)、Hill多样性系列指数(N_1,N_2和N_(+∞))、分类多样性指数(△)、分类差异指数(△~*)、等级多样性指数(△~+)对渤海自由生活海洋线虫的多样性进行了研究。
2) free living marine nematodes
自由生活海洋线虫
1.
Abundance and biomass of meiofauna, community structure and biodiversity of free living marine nematodes, benthic habitat of meiofauna were quantitatively studied at a grid of 22 stations during the cruise of investigation for spawning ground of anchovy (Engraulis japonicus) in the Southern Yellow Sea, China in June 2003.
本文利用2003年6月在南黄海鳀鱼产卵场22个站位所采集的未受扰动的沉积物样品,对小型底栖动物栖息的沉积环境、小型底栖动物的丰度和生物量、自由生活海洋线虫的群落结构和多样性进行了研究,为鳀鱼产卵场水层—底栖系统的耦合和底栖生物群落的系统研究提供基本参量。
3) free living marine nematode
自由生活海洋线虫
1.
The sedimental environment, abundance and biomass of meiofauna, community structure and biodiversity and systematics of free living marine nematodes, were quantitatively studied at a grid of 28 stations during the cruise of investigation in the Southern Yellow Sea, China in January 2004 and also at B2 station sampling bimonthly from September 2003 to September 2004 in Jiaozhou Bay.
本文利用2004年1月在南黄海广大浅水海域28个站位与2003-2004年胶州湾B2站7个航次所采集的未受扰动的沉积物样品,对小型底栖生物栖息的沉积环境、小型底栖生物的丰度和生物量、自由生活海洋线虫群落结构、多样性和分类学进行了研究。
2.
This paper deals with meiofauna abundance and biomass, community structure and biodiversity of free living marine nematodes, and benthic habitat of meiofauna in the Changjiang (Yangtze River) estuary and its adjacent waters.
本文利用2003年6月和2004年9月在长江口外及其邻近海域36个站位所采集的未受扰动的沉积物样品,对长江口及其邻近海域小型底栖生物的环境,小型底栖生物的数量,自由生活海洋线虫的群落结构,多样性和分类学进行了研究。
4) free-living nematode
自由生活线虫
1.
The free-living nematode, which could be found in a very wide environment, is an ideal and efficient model for testing the effects of xenobiotic chemicals in vivo.
自由生活线虫在环境中分布广泛,是理想的毒理学研究模型动物。
2.
For determining the influence of continuous tomato-cropping on root-knot nematode second-stage juveniles (RKN J2), soil nematodes and soil microorganism from rhizosphere soil, the dynamic distribution of J2, free-living nematode and soil microorganism with depth in greenhouse soil of different ages from Taian suburb were investigated from August 2007 to June 2008.
保护地连作是根结线虫为害严重的主要原因,为评估连作年限对根结线虫、土壤自由生活线虫及土壤微生物的影响,2007年8月～2008年6月对泰安市郊不同连作年限保护地番茄根围土壤不同土层根结线虫二龄幼虫(J2)与自由生活线虫数量的时空动态变化、土壤线虫群落结构特征、土壤微生物时空动态变化进行了系统研究。
5) freedom of the seas
海洋自由
6) Marine nematodes
海洋线虫
1.
The biodiversity analysis for free living marine nematodes was made based on two stations sampled in 1997, together with the data collected from 7 stations in 1986, one station from Jiaozhou Bay in 1995 and the other from Meizhou Bay in 1988.
对渤海的黄河口水下三角洲、莱州湾和渤海中部共 9个站位的海洋线虫群落的多样性进行了研究。
2.
The permanent meiofauna were dominated by free-living marine nematodes and harpacticoid copepods,whose mean relative abundances being 41% and 28% respectively, and their abundances and relative dominances appeared to be related to their feeding habits and the degree of shelter.
指出海洋线虫和底栖桡足类是永久性小型动物中占优势的类群，平均相对丰度分别占４１％和２８。
补充资料：海洋线虫
| 海洋线虫 marine roundworm 海洋中自由生活的线虫的通称 。属 于线虫动物门的无尾感器纲，分布在从潮间带直到大洋深沟的沉积物中，或附着在海藻和有机质碎屑的表面。已有可靠记录的海洋线虫有4000种。 身体为细长梭形或圆柱形。大多数种体长在1毫米以内，某些大型种长达5毫米甚至更长。海洋线虫以尾腺的分泌物粘附在各种类型的基质上，头端游离取食，更多的种类在砂间内自由生活。头部顶端为口，周围有6个唇瓣，每侧3个。头部和体部刚毛较习见。某些种类头部角皮的内层加厚形成头鞘。雌性末端横裂即为肛门，开口于尾端腹面。雄性则膨大形成泄殖腔。通常为雌雄异体，雄体略小，尾部向腹部弯曲。生殖时有交配现象。海洋线虫产卵一般不超过50个。排泄系统退化为单一的大型细胞腺。 海洋线虫为底栖，大致可分为河口和半咸水、潮间带、浅海和深海等4个群聚。栖息密度为后生动物之冠。以底栖硅藻和沉积物颗粒表面的细菌、真菌及其有机碎屑为食。某些为肉食性（杂食性）种类。 海洋线虫是线虫动物门中最原始的成员，现有6个目。它们是：薄咽目、项链目、单宫目、链环目、色矛目和嘴刺目。 |
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