The prevalence of Caenorhabditis elegans across 1.5 years in selected North German locations: the importance of substrate type, abiotic parameters, and Caenorhabditis competitors.
The prevalence of Caenorhabditis elegans across 1.5 years in selected North German locations: the importance of substrate type, abiotic parameters, and Caenorhabditis competitors.
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DOI：
10.1186/1472-6785-14-4
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发表时间：
2014-02-06
期刊：
影响因子：
--
通讯作者：
Schulenburg H
中科院分区：
文献类型：
--
作者：
Petersen C;Dirksen P;Prahl S;Strathmann EA;Schulenburg H
虽然秀丽隐杆线虫是多种生物领域的主要模式生物，并且在实验室条件下得到了充分的研究，但对其生态学知之甚少。因此，物种自然栖息地的特征应该为其生物学研究提供一个新的视角。目前最具特征的种群在法国，这表明秀丽隐杆线虫更喜欢富含营养和微生物的基质，如腐烂的水果和分解的植物物质。为了扩展这些发现，我们在德国北部三个地点的腐烂苹果和堆肥堆中连续取样了1.5年的秀丽隐杆线虫。秀丽隐杆线虫在夏秋两季均有发现。它与相关的线虫物种C. remanei共享栖息地，因此可能是类似生态位的重要竞争者。这两个物种是从同一地点分离出来的，但很少从相同的底物样品中分离出来。事实上，秀丽隐杆线虫主要分布在堆肥上，而腐苹果上则有残余线虫，可能存在生态位分离。秀丽隐杆线虫的发生本身与环境湿度和降雨有关，但两者的相关性仅在一个采样点显著。线虫流行率和非生物参数之间的其他关联无法确定。综上所述，我们的发现与之前法国秀丽隐杆线虫种群的结果有所不同，因为所考虑的德国种群总是与同属物种C. remanei共存（而不是像法国那样的C. briggsae），秀丽隐杆线虫的流行与湿度和降雨有关（而不是像法国种群那样的温度）。因此，考虑额外的地点和时间点对于充分了解线虫的自然生态至关重要。
Although the nematode Caenorhabditis elegans is a major model organism in diverse biological areas and well studied under laboratory conditions, little is known about its ecology. Therefore, characterization of the species’ natural habitats should provide a new perspective on its otherwise well-studied biology. The currently best characterized populations are in France, demonstrating that C. elegans prefers nutrient- and microorganism-rich substrates such as rotting fruits and decomposing plant matter. In order to extend these findings, we sampled C. elegans continuously across 1.5 years from rotting apples and compost heaps in three North German locations. C. elegans was found throughout summer and autumn in both years. It shares its habitat with the related nematode species C. remanei, which could thus represent an important competitor for a similar ecological niche. The two species were isolated from the same site, but rarely the same substrate sample. In fact, C. elegans was mainly found on compost and C. remanei on rotten apples, possibly suggesting niche separation. The occurrence of C. elegans itself was related to environmental humidity and rain, although the correlation was significant for only one sampling site each. Additional associations between nematode prevalence and abiotic parameters could not be established. Taken together, our findings vary from the previous results for French C. elegans populations in that the considered German populations always coexisted with the congeneric species C. remanei (rather than C. briggsae as in France) and that C. elegans prevalence can associate with humidity and rain (rather than temperature, as suggested for French populations). Consideration of additional locations and time points is thus essential for full appreciation of the nematode's natural ecology.
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影响因子：
10.7
作者：
Haber, M;Schüngel, M;Schulenburg, H
通讯作者：
Schulenburg, H
影响因子：
2.9
作者：
Huey, RB;Berrigan, D
通讯作者：
Berrigan, D
影响因子：
3.4
作者：
Schulenburg, H;Ewbank, JJ
通讯作者：
Ewbank, JJ
影响因子：
2.4
作者：
Schulenburg, H;Müller, S
通讯作者：
Müller, S
DOI：
10.1111/j.2517-6161.1995.tb02031.x
发表时间：
1995-01-01
影响因子：
5.8
作者：
BENJAMINI, Y;HOCHBERG, Y
通讯作者：
HOCHBERG, Y