我国软骨鱼类近期研究进展

来源 :第十届全国野生动物生态与资源保护学术研讨会 | 被引量 : 0次 | 上传用户:xxw1314159
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  我国拥有243种软骨鱼类,约占世界软骨鱼总数的五分之一,是西北太平洋海域软骨鱼类的主要分布区。二十世纪20、30年代以来,中外学者对中国沿岸软骨鱼类区系组成有过一些调查研究,并发表了一些地域性较强的调查报告;朱元鼎和孟庆闻先生在80 年代前后对我国软骨鱼类在比较形态学和分类学上进行了大量深入的研究,建立了我国完整的软骨鱼类的分类体系。
其他文献
以小麦生产品种小偃22、科农199和西农1376为受体品种,利用基因枪法将植物抗菌蛋白LTP基因作为目的基因,构建pAHC25-LTP表达载体转化幼胚愈伤组织,获得转基因To代植株1247株,经PPT筛选及PCR分子检测,获得阳性再生植株212株,转化率1.87%,接种条锈后抗锈性鉴定获得抗性显著提高的抗病植株1 1株,抗性提高的中等抗性植株63株.初步证明抗菌蛋白LTP基因在小麦抗条锈病性上有一
The inoculation concentration and three methods were studied in Ceretocystis paradoxa which caused coconut stem bleeding disease.The results indicated that spraying method with spores suspension and m
In the present work,the solid residue from hydrothermal treatment of rice straw was compressed into fuel pellet with or without Swidawilsonianaoil cake.The effects of temperature and residence time in
In this paper,corn straw in north cold climate regions are takenas the research object.With using the experimental method of orthogonal design,the straw size,bulk size,bulk density and moisture conten
In an attempt to investigate the dynamic process of ash deposition build-up on heating surfaces of biomass furnaces,a modified sampling system was set up at a 75t/hbiomass-fired circulating fluidized
Hydrothermal carbonization was applied in water-like phase of bio-oil for the polymerization and carbonization of sugars and sugar derivatives from 130 to 230 ℃.The hydrothermal carbonizationwas carri
High-energy-density hydrocarbons produced from biomass,such as cellulose and carbohydrates,has been raised significant attention in the production of sustainable and renewable transportation fuels.1 S
Catalytic steam gasification of biomass with CO2 capture is one of the most promising way for the sustainable hydrogen production.In this study,Ni-based catalyst(NiO/γ-Al2O3)coupled with CO2 sorbent(d
大型兽类空间分布的变化可以作为人类对生态系统影响的指标,尤其是对环境比较敏感的大型食肉类,如亚洲黑熊(Ursus thibetanus),其分布范围变化可以用来衡量人类对生态系统的影响程度.
会议
野生动植物资源(包括海洋资源及其产品)是人类可持续发展潜力的基础,也是全球各国的重要战略资源,鱼类等水产制品与全球5 亿人的生存和生计相关。我国自1981年正式加入华盛顿公约(CITES)后,已有124 种哺乳动物、149 种鸟类、56 种爬行类、2 种两栖类、28 种鱼类、456 种无脊椎动物和超过1370种植物被列入华盛顿公约附录,其国际贸易受到严格管制。