Species richness, distribution and genetic diversity of Caenorhabditis nematodes in a remote tropical rainforest.
Species richness, distribution and genetic diversity of Caenorhabditis nematodes in a remote tropical rainforest.
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偏远的热带雨林中caenorhabditis的物种丰富度，分布和遗传多样性。
DOI：
10.1186/1471-2148-13-10
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发表时间：
2013-01-12
影响因子：
3.4
通讯作者：
Braendle C
中科院分区：
文献类型：
--
作者：
Félix MA;Jovelin R;Ferrari C;Han S;Cho YR;Andersen EC;Cutter AD;Braendle C
与C.由于缺乏线虫发育生物学和分子遗传学的基础，生物学家缺乏基本数据来了解小杆线虫物种在不受人类影响的自然区域的丰度和分布。在这里，我们报告的分析密集采样从一个小的，偏远的网站在亚马逊雨林的Nouragues自然保护区在法属圭亚那。腐烂的水果和花朵的采样显示，Caushabditis的种群不断增殖，在一个单一的基质样品中同时出现了多达三种不同的物种，这表明当地微生境的显著重叠。我们分离出6个物种，代表最高的当地物种丰富度的小杆线虫遇到的日期，包括热带世界性和地理限制的物种，以前没有隔离在其他地方。我们还记录了种内分子多样性在多个空间尺度上的结构，重点是57 C。Briggsae分离自法属圭亚那。两个不同的遗传亚群甚至在一个水果中共存。然而，C.在法属圭亚那的briggsae种群遗传多样性并不来自强大的本地模式，而是提出了一个全球模式的分化的缩影。我们进一步整合我们的观察与新的数据，从近50个额外的最近收集的C。briggsae分离物从热带和温带地区的世界重新评估当地和全球模式的种内多样性，提供最全面的分析，以日期为C。多个空间尺度上的布里格塞岛种群结构。的丰度和物种丰富度的小杆线虫是高的新热带雨林栖息地，受到最小的人为干扰。微栖息地的偏好重叠不同的地方物种，虽然全球分布包括世界性和地理限制的群体。本地样本的世界性C。briggsae反映了其种内多态性的泛热带模式。它仍然是一个重要的挑战，以破译是什么驱动小杆线虫的分布和物种之间的多样性。
In stark contrast to the wealth of detail about C. elegans developmental biology and molecular genetics, biologists lack basic data for understanding the abundance and distribution of Caenorhabditis species in natural areas that are unperturbed by human influence. Here we report the analysis of dense sampling from a small, remote site in the Amazonian rain forest of the Nouragues Natural Reserve in French Guiana. Sampling of rotting fruits and flowers revealed proliferating populations of Caenorhabditis, with up to three different species co-occurring within a single substrate sample, indicating remarkable overlap of local microhabitats. We isolated six species, representing the highest local species richness for Caenorhabditis encountered to date, including both tropically cosmopolitan and geographically restricted species not previously isolated elsewhere. We also documented the structure of within-species molecular diversity at multiple spatial scales, focusing on 57 C. briggsae isolates from French Guiana. Two distinct genetic subgroups co-occur even within a single fruit. However, the structure of C. briggsae population genetic diversity in French Guiana does not result from strong local patterning but instead presents a microcosm of global patterns of differentiation. We further integrate our observations with new data from nearly 50 additional recently collected C. briggsae isolates from both tropical and temperate regions of the world to re-evaluate local and global patterns of intraspecific diversity, providing the most comprehensive analysis to date for C. briggsae population structure across multiple spatial scales. The abundance and species richness of Caenorhabditis nematodes is high in a Neotropical rainforest habitat that is subject to minimal human interference. Microhabitat preferences overlap for different local species, although global distributions include both cosmopolitan and geographically restricted groups. Local samples for the cosmopolitan C. briggsae mirror its pan-tropical patterns of intraspecific polymorphism. It remains an important challenge to decipher what drives Caenorhabditis distributions and diversity within and between species.
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影响因子：
30.8
作者：
Andersen, Erik C.;Gerke, Justin P.;Shapiro, Joshua A.;Crissman, Jonathan R.;Ghosh, Rajarshi;Bloom, Joshua S.;Felix, Marie-Anne;Kruglyak, Leonid
通讯作者：
Kruglyak, Leonid
雷马尼秀丽隐杆线虫全球群体遗传结构揭示了早期物种形成
影响因子：
3.3
作者：
Dey, Alivia;Jeon, Yong;Cutter, Asher D.
通讯作者：
Cutter, Asher D.
影响因子：
4.9
作者：
Jovelin, R;Ajie, BC;Phillips, PC
通讯作者：
Phillips, PC
影响因子：
3.3
作者：
Jovelin, Richard;Cutter, Asher D.
通讯作者：
Cutter, Asher D.
影响因子：
4.9
作者：
Cutter, Asher D.;Yan, Weiang;Felix, Marie-Anne
通讯作者：
Felix, Marie-Anne