...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Oecologia >Trait convergence and diversification arising from a complex evolutionary history in Hawaiian species of Scaevola
【24h】

Trait convergence and diversification arising from a complex evolutionary history in Hawaiian species of Scaevola

机译：夏威夷Scaevola物种进化史复杂而导致的性状趋同和多样化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Species variation in functional traits may reflect diversification relating to convergence and/or divergence depending on environmental pressures and phylogenetic history. We tested trait-environment relationships and their basis in finer-scale evolutionary processes among nine extant Hawaiian species of Scaevola L. (Goodeniaceae), a taxon with a complex history of three independent colonizations by different phylogenetic lineages, parallel ecological specialization, and homoploid hybridization events in Hawai'i. Using a wild population for each species, we evaluated traits related to plant function (morphology, leaf and wood anatomy, nutrient and carbon isotope composition). Hawaiian Scaevola species were distributed across coastal, dry forest and wet forest environments; multivariate environmental analysis using abiotic and biotic factors further showed that species from distantly related lineages inhabited similar environments. Many traits correlated with environment (based on the multivariate environmental analysis), considering both distantly related species and more closely related species. Scaevola species within shared habitats generally showed trait convergence across distantly related lineages, particularly among wet forest species. Furthermore, trait diversification through divergence was extensive among closely related Scaevola species that radiated into novel environments, especially in plant morphology and traits affecting water relations. Homoploid hybrid-origin species were "intermediate" compared to their ancestral parent species, and possessed trait combinations relevant for their current habitat. The diversity in functional traits reflected strong influences of both ecology and evolutionary history in native Hawaiian Scaevola species, and trait correspondence with environment was due to the combination of multiple processes within the taxon: trait pre-adaptation and filtering, evolutionary convergence, divergence, and hybridization.
机译：功能性状的物种变异可能反映出与趋同和/或趋异有关的多样化，具体取决于环境压力和系统发育史。我们在9个现存的夏威夷Scaevola L.（Goodeniaceae）物种中进行了更精细的进化过程，研究了性状与环境的关系及其基础，这是一个分类单元，具有由不同的系统发生谱系，平行的生态专业化和同倍体杂交形成的三个独立的殖民地在夏威夷发生的事件。使用每种物种的野生种群，我们评估了与植物功能相关的性状（形态，叶片和木材解剖结构，营养成分和碳同位素组成）。夏威夷Scaevola物种分布在沿海，干旱森林和湿润森林环境中。使用非生物和生物因素进行的多变量环境分析进一步表明，远缘血缘的物种居住在相似的环境中。许多性状都与环境相关（基于多元环境分析），同时考虑了远缘物种和近缘物种。共有生境中的Scaevola物种通常在远缘谱系中表现出特征收敛，特别是在湿林物种中。此外，在辐射到新环境中的密切相关的Scaevola物种中，通过发散进行的性状多样化广泛存在，特别是在植物形态和影响水关系的性状方面。同种杂种起源的物种与其祖先的物种相比是“中间的”，并且具有与其当前栖息地相关的性状组合。功能性状的多样性反映了夏威夷本土Scaevola物种对生态和进化史的强烈影响，并且性状与环境的对应关系归因于分类单元内的多个过程的组合：性状预适应和过滤，进化趋同，发散和杂交。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号