Department of Wildlife Ecology, Swedish University of Agricultural Sciences, S-750 07, Uppsala, Sweden.
J Chem Ecol. 1986 Jul;12(7):1569-78. doi: 10.1007/BF01020264.
Seedlings of North AmericanPinus contorta introduced to Sweden and Finland are severely gnawed by voles, e.g.,Microtus agrestis. The level of damage varies between provenances. Chemical analyses of various phenolic compounds, monoterpenes, and resin acids of different provenances and of damaged and undamaged stems showed that some phenolic substances in the bark increased after damage without deterring the animals, that monoterpene differences between provenances were not related to vole damage, and that certain resin acids occurred in larger amounts in lightly than in severely damaged provenances. Levopimaric and neoabietic acid, and possibly abietic acid, may be important for a partial resistance to vole browsing.
引入瑞典和芬兰的北美的扭叶松幼苗受到田鼠(如,沼泽田鼠)的严重啃食。损害的程度因起源地而异。对不同起源地的受损和未受损茎的各种酚类化合物、单萜和树脂酸的化学分析表明,树皮中的一些酚类物质在受到损害后增加,但并没有阻止动物,起源地之间的单萜差异与田鼠损害无关,并且某些树脂酸在轻度受损的起源地中比在严重受损的起源地中含量更大。左旋海松酸、新枞酸和可能的枞酸可能对部分抵抗田鼠啃食很重要。