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首页> 外文学位 >Temporal and spatial development of communities at nascent deep-sea hydrothermal vents and evolutionary relationships of hydrothermal-vent caridean shrimp (Bresiliidae).
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Temporal and spatial development of communities at nascent deep-sea hydrothermal vents and evolutionary relationships of hydrothermal-vent caridean shrimp (Bresiliidae).

机译：新生的深海热液喷口群落的时空发展及热液通流的卡里丹虾（Bresiliidae）的进化关系。

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摘要

Temporal changes in biological community structure from the apparent "birth" of numerous deep-sea hydrothermal vents were documented following the April 1991 discovery of newly-formed vents on the East Pacific Rise. Photo- and videographic documentation of megafaunal colonization and chemical analyses of diffuse hydrothermal fluids associated with these developing communities were conducted over a 4.5 year period within an on-bottom observatory, the Biologic-Geologic Transect, between 9;The evolutionary history and systematic relationships of shrimp (Caridea: Bresiliidae) inhabiting deep-sea hydrothermal vent and hydrocarbon seep environments was assessed using the mitochondrial Cytochrome c Oxidase subunit I (COI) gene. Phylogenetic analyses recovered three distinct clades (A, Rimicaris/Chorocaris/Opaepele, B, Alvinocaris, and C, Mirocaris) consistent with morphologically-based taxonomy. However, the genus Chorocaris is paraphyletic and Mirocaris fortunata and M. keldyshi may not be genetically distinct. Independent species descriptions of a "small orange" caridean shrimp found at deep-sea hydrothermal vents along the Mid-Atlantic Ridge created the synonymous names, Iorania concordia Vereshchaka (1996b) and Rimicaris aurantiaca Martin et al. (1997). Genetic analyses involving allozymes and mitochondrial DNA sequences reveal that the "small orange" shrimp are actually a juvenile form of Rimicaris exoculata Williams and Rona (1986). Evolutionary relationships of vent-endemic shrimp species are not correlated to their extant biogeographic distributions or history of sea-floor spreading. Additionally, COI data suggest these vent-endemic organisms are not remnants of a Mesozoic vent assemblage. Molecular estimates of divergence suggest bresiliids radiated not more than 20 MYA during the Miocene, and comprise the youngest vent and seep-associated diversification.
机译：1991年4月在东太平洋上升带发现了新形成的喷口之后，据记载，由于众多深海热液喷口的明显“诞生”，生物群落结构发生了时间变化。在4.5年的时间内，在底部观测站“生物-地质样带”中进行了大型动物群落定殖的照片和视频记录以及与这些发育中的社区相关的弥散热液的化学分析，时间介于9岁到9岁之间；使用线粒体细胞色素C氧化酶亚基I（COI）基因评估了居住在深海热液喷口和碳氢化合物渗漏环境中的虾（Caridea：Bresiliidae）。系统发育分析回收了三个不同的进化枝（A，Rimicaris / Chorocaris / Opaepele，B，Alvinocaris，C，Mirocaris），与基于形态学的分类法一致。但是，Crocrocaris属是副生的，而Mirocaris fortunata和M. keldyshi可能在遗传上没有区别。在大西洋中脊沿深海热液喷口发现的“小橙色”石斑鱼虾的独立物种描述创造了同义词名称，即Iorania concordia Vereshchaka（1996b）和Rimicaris aurantiaca Martin等。 （1997）。涉及同工酶和线粒体DNA序列的遗传分析表明，“橙色小虾”实际上是Rimicaris exoculata Williams和Rona（1986）的幼体。特有虾种的进化关系与它们现有的生物地理分布或海底传播的历史无关。此外，COI数据表明这些通风口特有的生物不是中生代通风口组合的残余物。散布的分子估计表明，中新世期间，油菜籽辐射不超过20 MYA，并且是最年轻的发泄和与渗流有关的多样化。

著录项

  • 作者

    Shank, Timothy Mitchell.;

  • 作者单位

    Rutgers The State University of New Jersey - New Brunswick.;

  • 授予单位 Rutgers The State University of New Jersey - New Brunswick.;
  • 学科 Biology Ecology.;Biology Zoology.;Environmental Sciences.;Biology Oceanography.;Biology Genetics.
  • 学位 Ph.D.
  • 年度 1998
  • 页码 157 p.
  • 总页数 157
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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