Extracts of the invasive shrub Lonicera maackii increase mortality and alter behavior of amphibian larvae
Extracts of the invasive shrub Lonicera maackii increase mortality and alter behavior of amphibian larvae
复制标题
入侵灌木忍冬的提取物会增加两栖动物幼虫的死亡率并改变其行为
DOI：
10.1007/s00442-010-1777-z
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发表时间：
2010
期刊：
影响因子：
2.7
通讯作者：
John L. Orrock
中科院分区：
文献类型：
--
作者：
J. Watling;C. Hickman;E. Lee;K. Wang;John L. Orrock
入侵植物产生的水溶性植物化学物质可能代表入侵生态系统的新元素，可以对本地生物产生各种直接和间接的影响。特别是酚类化合物是一种常见的植物防御，与其他类群相比，这些化合物可能对两栖动物产生不成比例的影响。我们结合了四种两栖动物（蝾螈Ambystoma maculatum，蟾蜍Anaxyrus americanus和青蛙Hyla sp.和Lithobates blairi）的幼虫的入侵植物提取物的影响与行为观察的探索，旨在确定行为是否可以改善暴露于入侵植物提取物的负面影响。幼虫饲养的提取物的广泛入侵的黑龙江忍冬（紫茎泽兰maackii），混合本地落叶，和水控制。美洲小食心虫（Anaxyrus americanus）蝌蚪在L.与在本地提取物中饲养的蝌蚪相比，在本地提取物中饲养的蝌蚪更容易死亡，但在本地和外来提取物中饲养的死亡率差异对于其他三个物种并不显著。Anaxyrus americanus和L.在L. maackii提取物比在本地提取物，一致的假设，外来提取物可能会干扰呼吸生理，并建议L。blairi能在行为上改善L.金合欢提取物我们的研究强调了入侵植物提取物可能改变本地动物生态动态的直接和间接途径。
Water-soluble phytochemicals produced by invasive plants may represent novel elements of invaded ecosystems that can precipitate a variety of direct and indirect effects on native organisms. Phenolic compounds in particular are a common plant defense, and these compounds may have disproportionate impacts on amphibians compared to other taxa. We coupled an exploration of invasive plant extract effects on larvae of four amphibian species (the salamander Ambystoma maculatum, the toad Anaxyrus americanus, and the frogs Hyla sp. and Lithobates blairi) with behavioral observations designed to determine whether behavior can ameliorate the negative effects of exposure to invasive plant extracts. Larvae were reared in extracts of the widespread invasive Amur honeysuckle (Lonicera maackii), mixed native leaf litter, and a water control. Anaxyrus americanus tadpoles reared in L. maackii extracts were more likely to die than tadpoles reared in native extracts, but differences in mortality following rearing in native and exotic extracts were not significant for the other three species. Anaxyrus americanus and L. blairi tadpoles made more trips to the surface in L. maackii extracts than in native extracts, consistent with the hypothesis that exotic extracts may interfere with respiratory physiology and suggesting that L. blairi can behaviorally ameliorate the negative effects of L. maackii extracts. Our study highlights both a direct and indirect pathway by which invasive plant extracts may alter the ecological dynamics of native fauna.