...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Marine ecology progress series >Novel algal symbiont (Symbiodinium spp.) diversity in reef corals of Western Australia
【24h】

Novel algal symbiont (Symbiodinium spp.) diversity in reef corals of Western Australia

机译：西澳大利亚州珊瑚礁中的新型藻类共生物（Symbiodinium spp。）多样性

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

The identity and diversity of algal symbionts {Symbiodinium spp.) in reef corals is thought to influence to the resilience of reef ecosystems to climate change, and varies depending on coral species, environmental conditions, and biogeography. We examined these factors by surveying corals along a latitudinal gradient in Western Australia on reefs connected north to south by the warm-water Leeuwin Current. We used the internal transcribed spacer-2 (ITS-2) region of ribosomal DNA to characterize Symbiodinium communities in 19 species of reef coral (in 16 genera) from tropical Dampier (20.5° S) to temperate Dunsborough (33.5° S). We documented a high number of novel ITS-2 types in Symbiodinium clades B (1 type) and C (14 types) as well as 7 previously reported ITS-2 types in clades B, C, and D. In addition, we compared symbiont distributions with Giovanni's OBIG MODIS-Aqua satellite temperature data set and found that the putatively thermotolerant Symbiodinium ITS-2 type Dla was more frequently detected in 'chronically warm' tropical sites than at 'chronically cool' temperate sites, while clade B symbiont types showed the reverse pattern, being found in certain corals at the southernmost sites. Symbiodinium type Dla was generally most abundant at Dampier, where bleaching had occurred 1 mo prior to sampling, although some variation by host taxa was observed. The diverse and novel Symbiodinium communities documented here may be a result of (1) the variable environmental histories of the study sites, (2) the apparent genetic divergence within this genus resulting from the relative isolation of Western Australian reefs, and/or (3) the frequent transport of symbionts (in hospite or free-living) from Indo-Malay reefs to Western Australia via the Leeuwin Current. These results indicate that understudied reefs in remote and isolated areas may contain Symbiodinium diversity that has not been reported previously.
机译：据认为，珊瑚礁中的藻类共生菌（Symbiodinium spp。）的身份和多样性会影响珊瑚礁生态系统对气候变化的适应力，并且会因珊瑚种类，环境条件和生物地理而异。我们通过在西澳大利亚经温水的吕温流（Leeuwin Current）连接南北的珊瑚礁上沿纬度梯度调查珊瑚来检查这些因素。我们使用了核糖体DNA的内部转录间隔区2（ITS-2）区来表征从热带Dampier（20.5°S）到Dunsborough（33.5°S）温带的19种珊瑚礁（16属）中的共生菌群落。我们在Symbiodinium进化枝B（1种）和C（14种）中记录了大量新颖的ITS-2类型，以及在B，C和D进化枝中先前报道的7种ITS-2类型。此外，我们还比较了共生体根据乔瓦尼（Giovanni）的OBIG MODIS-Aqua卫星温度数据集的分布，发现在“长期温暖”的热带地区比在“长期凉爽”的温带地区更频繁地检测到推定的耐热双生子ITS-2型Dla，而进化枝B共生类型显示了在最南端的某些珊瑚中发现了相反的模式。丹皮尔（Dampier）的Dla共生菌类型通常最丰富，虽然在采样前1个月出现了漂白，但观察到宿主类群存在一些差异。这里记录的多样性和新颖的共生生物群落可能是由于以下原因造成的：（1）研究地点的环境历史各不相同；（2）由于西澳大利亚礁的相对隔离，该属中明显的遗传差异；和/或（3） ）将共生体（无论是临终生活还是自由生活）从印度马来礁通过利温温洋流频繁运输到西澳大利亚州。这些结果表明，偏远和偏远地区的珊瑚礁可能含有以前未曾报道过的共生生物多样性。

著录项

  • 来源
    《Marine ecology progress series》 |2011年第2011期|p.63-75|共13页
  • 作者

    Rachel N. Silverstein; Adrienne M. S. Correa; Todd C. LaJeunesse2; Andrew C. Baker;

  • 作者单位

    Department of Ecology, Evolution and Environmental Biology, Columbia University, MC 5557, 1200 Amsterdam Avenue,New York, New York 10027, USA,Division of Marine Biology and Fisheries, Rosenstiel School of Marine and Atmospheric Science,University of Miami, 4600 Rickenbacker Causeway, Miami, Florida 33149, USA;

    Department of Ecology, Evolution and Environmental Biology, Columbia University, MC 5557, 1200 Amsterdam Avenue,New York, New York 10027, USA,Department of Biological Sciences, Florida International University, 3000 NE 151st St., North Miami,Florida 33181, USA;

    Department of Biology, The Pennsylvania State University, 221 Mueller Laboratory, University Park, Pennsylvania 16802, USA;

    Department of Ecology, Evolution and Environmental Biology, Columbia University, MC 5557, 1200 Amsterdam Avenue,New York, New York 10027, USA,Wildlife Conservation Society, International Conservation - Marine Program, 2300 Southern Boulevard, Bronx,New York 10460, USA,Division of Marine Biology and Fisheries, Rosenstiel School of Marine and Atmospheric Science,University of Miami, 4600 Rickenbacker Causeway, Miami, Florida 33149, USA;

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

    Corals; Scleractinia; Denaturing gradient gel electrophoresis; DGGE; Internaltranscribed spacer-2 region; ITS-2; Latitudinal gradient; Symbiodinium; Western Australia; Reefs;

    机译：珊瑚;菌核素;变性梯度凝胶电泳;DGGE;内部转录间隔区2区;ITS-2;经度梯度;共生素;西澳大利亚州;珊瑚礁;

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