Diet disparity among sympatric herbivorous cichlids in the same ecomorphs in Lake Tanganyika: amplicon pyrosequences on algal farms and stomach contents.
Diet disparity among sympatric herbivorous cichlids in the same ecomorphs in Lake Tanganyika: amplicon pyrosequences on algal farms and stomach contents.
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DOI：
10.1186/s12915-014-0090-4
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发表时间：
2014-10-29
期刊：
影响因子：
5.4
通讯作者：
Hori M
中科院分区：
文献类型：
--
作者：
Hata H;Tanabe AS;Yamamoto S;Toju H;Kohda M;Hori M
坦噶尼喀湖是东非大裂谷的一个古老湖泊，以慈鲷的适应性辐射而闻名。慈鲷科的五个部落已经获得了食草动物，有五种生态：食草动物，浏览器，刮，咬和铲。16种食草慈鲷在湖中的岩石沿岸的斜坡上共存。其中七个单独捍卫喂养领土对入侵食草动物建立藻类农场。我们收集了这些地区在不同深度的附生植物，也收集了鱼类标本。藻类和蓝藻群落结构进行了分析，使用扩增子宏基因组方法。基于454焦磷酸测序的SSU rRNA基因序列，我们确定了300个光合类群，包括197蓝藻，57 bacillariophytes，和31绿藻。藻类养殖场显着不同的慈鲷物种之间的组成，即使在相同的ecomorph，部分原因是他们的栖息地深度隔离。不同种类的胃内容物和藻类养殖场的藻类组成不同，这表明慈鲷选择性地收获他们的农场。胃内容物是高度多样化的，即使在同一部落的物种之间，在相同的饮食生态。在这项研究中，扩增子宏基因组方法揭示了食物生态位分离的基础上栖息地深度隔离共存的食草慈鲷在坦噶尼喀湖相同的生态形态。本文的在线版本（doi：10.1186/s12915-014-0090-4）包含补充材料，可供授权用户使用。
Lake Tanganyika, an ancient lake in the Great Rift Valley, is famous for the adaptive radiation of cichlids. Five tribes of the Cichlidae family have acquired herbivory, with five ecomorphs: grazers, browsers, scrapers, biters and scoopers. Sixteen species of the herbivorous cichlids coexist on a rocky littoral slope in the lake. Seven of them individually defend feeding territories against intruding herbivores to establish algal farms. We collected epiphyton from these territories at various depths and also gathered fish specimens. Algal and cyanobacteria community structures were analysed using the amplicon-metagenomic method. Based on 454-pyrosequencing of SSU rRNA gene sequences, we identified 300 phototrophic taxa, including 197 cyanobacteria, 57 bacillariophytes, and 31 chlorophytes. Algal farms differed significantly in their composition among cichlid species, even in the same ecomorph, due in part to their habitat-depth segregation. The algal species composition of the stomach contents and algal farms of each species differed, suggesting that cichlids selectively harvest their farms. The stomach contents were highly diverse, even between species in the same tribe, in the same feeding ecomorph. In this study, the amplicon-metagenomic approach revealed food niche separation based on habitat-depth segregation among coexisting herbivorous cichlids in the same ecomorphs in Lake Tanganyika. The online version of this article (doi:10.1186/s12915-014-0090-4) contains supplementary material, which is available to authorized users.
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影响因子：
14.9
作者：
Klindworth A;Pruesse E;Schweer T;Peplies J;Quast C;Horn M;Glöckner FO
通讯作者：
Glöckner FO
影响因子：
2.9
作者：
Betournay, Scott;Marsh, Amanda C.;Stiller, John W.
通讯作者：
Stiller, John W.
影响因子：
1.2
作者：
Karino, K
通讯作者：
Karino, K
DOI：
10.1007/s10482-011-9598-6
发表时间：
2011-10-01
影响因子：
2.6
作者：
Bengtsson, Johan;Eriksson, K. Martin;Nilsson, R. Henrik
通讯作者：
Nilsson, R. Henrik
影响因子：
1.8
作者：
Bouton, N;Seehausen, O;van Alphen, JJM
通讯作者：
van Alphen, JJM