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首页> 外文期刊>Journal of Chemical Ecology >Kangaroos Avoid Eating Seedlings with or Near Others with Volatile Essential Oils
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Kangaroos Avoid Eating Seedlings with or Near Others with Volatile Essential Oils

机译：袋鼠避免与挥发性精油一起或与他人一起吃苗

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摘要

Preliminary studies indicate that western grey kangaroos browse seedlings of non-Myrtaceae species rather than Myrtaceae. Seven morphologic- ally-matched species pairs of Myrtaceaeon-Myrtaceae placed at three field sites showed that kangaroos avoided the essential-oil-containing Myrtaceae, but readily consumed the matched essential-oil-lacking non-Myrtaceae. The one exception (Pittosporaceae) had limited herbivory and was later found to possess two essential oils in its leaves. Gas chromatography and mass-spectra showed the seven Myrtaceae plants contain between 2 and 9 essential oils in their leaves, particularly the highly volatile monoterpene, 2,5-dimethyl-3-methylene-1,5-heptadine. Three of the above species pairs were used to gauge their effectiveness as nurse plants for a highly palatable legume. Plants placed beside Myrtaceae nurse plants were less browsed than those placed beside non-Myrtaceae nurse plants. We conclude that western grey kangaroos use olfactory cues to avoid foliage containing potentially toxic essential oils, and that this also has implications for seedling recruitment patterns in regenerating communities.
机译：初步研究表明，西部灰色袋鼠浏览的是非桃金娘科而不是桃金娘科的幼苗。放在三个野外的七个桃金娘科/非桃金娘科形态匹配的物种对显示，袋鼠避免了含精油的桃金娘科，但很容易食用了匹配的缺少精油的非桃金娘科。一个例外（Pittosporaceae）的草食性有限，后来发现其叶子中含有两种精油。气相色谱和质谱表明，七叶桃金娘科植物的叶子中含有2至9种精油，特别是高挥发性单萜2,5-二甲基-3-亚甲基-1,5-庚二胺。以上三个物种对用于评估其作为高度可口豆科植物的育苗植物的有效性。放在桃金娘科护士植物旁边的植物比放在非桃金娘科护士植物旁边的植物浏览更少。我们得出结论，西方灰色袋鼠使用嗅觉线索来避免叶子中含有潜在有毒的精油，并且这也对再生社区中的幼苗募集方式有影响。

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