Lethal Effects of Leaf Leachate from the Non-Native Invasive Shrub Amur Honeysuckle (Lonicera maackii) on a Model Aquatic Organism (Hyalella azteca)
Lethal Effects of Leaf Leachate from the Non-Native Invasive Shrub Amur Honeysuckle (Lonicera maackii) on a Model Aquatic Organism (Hyalella azteca)
复制标题
非本地入侵灌木阿穆尔金银花（Lonicera maackii）的叶渗滤液对模式水生生物（Hyalella azteca）的致死作用
DOI：
10.1080/11956860.2018.1426261
复制
发表时间：
2018
期刊：
影响因子：
1.3
通讯作者：
R. McEwan
中科院分区：
文献类型：
--
作者：
E. Borth;Kevin W. Custer;R. McEwan
在美国东部，入侵性灌木山银花（Amur mononyce）是一个有问题的物种，越来越多的证据表明，来自该物种的材料对某些生物体具有毒性作用。我们使用了一系列的微观生物测定来评估L。maackii叶渗滤液对大型无脊椎动物Hyalella azteca的毒性评估，这是一个标准的水生生物。在实验室环境中，H.在48小时毒性试验中，阿兹特克人暴露于树叶沥滤液系列稀释液（6.25%、12.5%、25%、50%、100%）。在整个生长季节重复这一过程，以评估由于物候而引起的叶毒性变化的可能性。H. Azteca暴露于L.在秋季的maackii渗滤液中，所有的生物体都死亡（P < 0.05），事实上，在大多数试验中，当暴露于任何浓度时，所有的生物体都死亡。在春季，所有稀释液的平均存活百分比也显著降低（所有处理的P < 0.05）;然而，在生长季节试验中几乎没有检测到毒性。这些结果表明：（a）L.（B）全年变化的模式水生生物上的maackii叶，可能与物候学相关的生化变化有关。
ABSTRACT The invasive shrub Lonicera maackii (Amur honeysuckle) is a problematic species in the eastern United States and there is growing evidence that materials from this species have toxic effects on some organisms. We used a sequence of microcosm bioassays to assess the influence of L. maackii leaf leachate on the macroinvertebrate Hyalella azteca, which is a standard aquatic organism for toxicity assessment. In a laboratory setting, H. azteca were exposed to a leaf leachate dilution series (6.25%, 12.5%, 25%, 50%, 100%) in 48-h toxicity tests. This was repeated throughout the growing season to assess the potential for changes in leaf toxicity due to phenology. Strong toxic effects were found when H. azteca was exposed to a L. maackii leachate from autumn (P < 0.05) and, in fact, all organisms died when exposed to any level of concentration in most trials. Mean percent survival also decreased significantly in all dilutions in the spring (P < 0.05 for all treatments); however, little toxicity was detected in growing season trials. These results suggest (a) strong toxic effects of L. maackii foliage on a model aquatic organism that (b) varies throughout the year, potentially in relationship to biochemical changes associated with phenology.