Selective consumption of acorns by the Japanese wood mouse according to tannin content: a behavioral countermeasure against plant secondary metabolites
Selective consumption of acorns by the Japanese wood mouse according to tannin content: a behavioral countermeasure against plant secondary metabolites
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DOI：
10.1007/s11284-008-0473-5
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发表时间：
2008-11-01
影响因子：
2
通讯作者：
Shimada, Takuya
中科院分区：
文献类型：
--
作者：
Takahashi, Akiko;Shimada, Takuya
我们利用日本木鼠（Apodemus speciosus）和栎（Quercus serrata）的橡子（干重含单宁约6.4%），研究了橡子中选择性消耗单宁作为植物次生代谢物的食前对策的存在。此外，还研究了对蛋白质选择性消耗的存在。在采食橡子实验中，将18只木鼠分为两组：有采食橡子经验的实验组（N = 9）和没有采食橡子经验的实验组（N = 9）。两组小鼠连续3晚只喂橡子。对单宁的选择性（从对照、剩余和摄入的橡子中的单宁含量估计的指数）在有经验的组中显着为正，表明存在对单宁的选择性消耗。相比之下，没有经验组的小鼠对单宁没有明显的选择性。直接比较两组间的选择性指标，差异无统计学意义。对蛋白质的选择性消耗而不是对蛋白质的选择性消耗也发生在有经验的一组中，但这被认为是对单宁选择性消耗的副产品。选择性消耗单宁可以通过减少单宁摄入量来减轻单宁的负面影响。
We examined the presence of selective consumption against tannins in acorns as a pre-ingestive countermeasure to plant secondary metabolites by using the Japanese wood mouse (Apodemus speciosus) and acorns of Quercus serrata, which contained ca. 6.4% tannins on a dry weight basis. In addition, the presence of selective consumption against proteins was also examined. In the acorn-feeding experiment, 18 wood mice were allocated to two groups: the experienced group (N = 9), which had previous experience in feeding on acorns, and the inexperienced group (N = 9), which had no experience. Mice of both groups were fed only acorns for 3 nights. Selectivity against tannins (an index estimated from the tannin content in control, remaining, and ingested acorns) was significantly positive in the experienced group, indicating the presence of selective consumption against tannins. In contrast, mice in the inexperienced group did not show significant selectivity against tannins. Comparing the selectivity indices directly between two groups, however, they did not differ significantly. Selective consumption against proteins rather than that for proteins also occurred in the experienced group, but it was thought to be a byproduct resulted from the selectivity against tannins. Selective consumption against tannins can mitigate the negative effects of tannins by decreasing tannin intake.