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首页> 外文期刊>Estuarine Coastal and Shelf Science >Taxonomic resolution and Biological Traits Analysis (BTA) approaches in estuarine free-living nematodes
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Taxonomic resolution and Biological Traits Analysis (BTA) approaches in estuarine free-living nematodes

机译：河口自由生活线虫的生物分类学解析和生物特征分析（BTA）方法

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摘要

The taxonomic and functional structure of the subtidal nematode assemblages from a temperate estuary (Mondego estuary, Portugal) was studied, focussing on different taxonomic levels (genus, family and order), on single functional groups and on multiple biological traits. Based on taxonomic levels and on four biological traits (feeding type, life strategy, tail and body shape), the analysis of the nematode assemblage distribution patterns revealed spatial differences but no clear temporal pattern. At the family and genus level, a separation of the upstream sections was observed, while a distinction of polyhaline and euhaline areas was less evident. The use of biological traits added new information regarding the relationships between diversity patterns and the environmental variables. Most nematodes encountered along the estuary were non-selective deposit feeders (1B) and omnivores/predators (2B), colonizer -persisters (score of 2 or 3), with clavate-conicocylindrical tails and slender bodies and with a distribution related essentially to salinity, oxygen and chlorophyll a. Applying a Biological Traits Analysis (BTA) showed the role of oxygen concentration in the distribution of the nematode communities. Although the BTA was no more powerful than the traditional taxonomic approach in detecting spatial differences along the Mondego estuary, it has increased our knowledge of the functional structure and characterization of nematode communities in the estuary.
机译：研究了来自温带河口（葡萄牙蒙德戈河口）的潮汐线虫组合的分类学和功能结构，重点是不同的分类学水平（属，科和序），单个功能组和多种生物学特性。根据分类学水平和四个生物学特征（进食类型，生活策略，尾巴和身体形态），对线虫组合分布模式的分析显示出空间差异，但没有清晰的时间格局。在家族和属水平上，观察到上游部分的分离，而多卤和真盐区域的区分则不太明显。生物学特性的使用增加了有关多样性模式与环境变量之间关系的新信息。沿河口遇到的大多数线虫是非选择性沉积物饲养者（1B）和杂食动物/捕食者（2B），定居者-persisters（分数为2或3），具棒状圆锥形的圆柱形尾巴和细长的体，其分布基本上与盐度有关，氧气和叶绿素a。应用生物特征分析（BTA）显示了氧浓度在线虫群落分布中的作用。尽管BTA在检测Mondego河口沿线的空间差异方面没有比传统的分类方法强大，但是它增加了我们对河口线虫群落功能结构和特征的认识。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2014年第1期|69-78|共10页
  • 作者

    A.S. Alves; H. Verissimo; M.J. Costa; J.C. Marques;

  • 作者单位

    IMAR - Institute of Marine Research, Department of Life Sciences, Faculty of Sciences and Technology, University of Coimbra, 3004-517 Coimbra, Portugal,Centra de Oceanografia, Faculdade de Ciencias, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal;

    IMAR - Institute of Marine Research, Department of Life Sciences, Faculty of Sciences and Technology, University of Coimbra, 3004-517 Coimbra, Portugal;

    Centra de Oceanografia, Faculdade de Ciencias, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal;

    IMAR - Institute of Marine Research, Department of Life Sciences, Faculty of Sciences and Technology, University of Coimbra, 3004-517 Coimbra, Portugal;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    free-living nematodes; taxonomic resolution; functional groups; Biological Traits Analysis (BTA); estuaries;

    机译：自由生活的线虫;分类学解析;功能组;生物特征分析（BTA）;河口;

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