Dietary niche partitioning between sympatric wood mouse species (Muridae: Apodemus) revealed by DNA meta-barcoding analysis
Dietary niche partitioning between sympatric wood mouse species (Muridae: Apodemus) revealed by DNA meta-barcoding analysis
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DOI：
10.1093/jmammal/gyy063
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发表时间：
2018-06
影响因子：
1.7
通讯作者：
J. Sato;T. Shimada;D. Kyogoku;Taketo Komura;S. Uemura;T. Saitoh;Y. Isagi
中科院分区：
文献类型：
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作者：
J. Sato;T. Shimada;D. Kyogoku;Taketo Komura;S. Uemura;T. Saitoh;Y. Isagi
对日本同域分布的两种小白鼠（Apodemus argenteus和A.通过使用叶绿体trnL P6环内含子区的核苷酸序列作为分子标记对粪便进行DNA元条形码分析来确定（speciosus）。这两个物种在植物食性方面表现出较大程度的生态位重叠，主要以橡子生产的壳斗科物种（假定为皱叶栎）为食。然而，A. argenteus比A.美丽的相反，A.银纹伊蚊的生态位宽度较大，取食的植物科较多，如桦木科、豆科、木犀科、松科、芸香科、无患子科、椴树科和榆科等，而银纹伊蚊很少取食这些科的植物。美丽的也有证据表明不同季节的饮食存在物种差异。木犀科植物（推测为水曲柳Fraxinusmandshurica）被A. argenteus和A. 8月至10月的美丽花。结果表明，A. argenteus为多面手食饵，A. speciosus是一个专家，和2姬鼠物种分开他们的饮食生态位不仅由组成植物物种的整体，但也由季节内的差异。
Plant diets of 2 sympatric species of wood mice in Japan (Apodemus argenteus and A. speciosus) were determined by DNA meta-barcoding analyses of feces using the nucleotide sequences of the chloroplast trnL P6 loop intron region as a molecular marker. The 2 species showed a relatively large degree of niche overlap in plant dietary profiles, feeding mostly on acorn-producing Fagaceae species (assumed to be Quercus crispula). However, A. argenteus was less dependent on Fagaceae species than A. speciosus. Instead, A. argenteus had a wider niche breadth, feeding upon a wider range of plant families such as Betulaceae, Fabaceae, Oleaceae, Pinaceae, Rutaceae, Sapindaceae, Tiliaceae, and Ulmaceae, which were consumed only infrequently by A. speciosus. There was also evidence for species differences in diet across seasons. Oleaceae species (assumed to be Fraxinus mandshurica) were consumed by A. argenteus from June to August, and by A. speciosus from August to October. The results suggested that A. argenteus is a generalist feeder, and A. speciosus a specialist, and the 2 Apodemus species separate their dietary niches not only by the component plant species overall, but also by differences within seasons.