A sublethal imidacloprid concentration alters foraging and competition behaviour of ants
A sublethal imidacloprid concentration alters foraging and competition behaviour of ants
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亚致死浓度的吡虫啉改变蚂蚁的觅食和竞争行为
DOI：
10.1007/s10646-016-1638-6
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发表时间：
2016
期刊：
影响因子：
2.7
通讯作者：
H. Köhler
中科院分区：
文献类型：
--
作者：
Sarina Thiel;H. Köhler
新烟碱类杀虫剂，如广泛使用的吡虫啉化合物，被怀疑会损害一些非目标物种的认知能力、行为和适应能力。我们测试了亚致死浓度的吡虫啉是否会改变两种欧洲蚂蚁的觅食和攻击行为。尽管黑斑潜蝇的筑巢活动没有受到农药暴露的影响，但这些蚂蚁需要更多的时间才能活跃起来，觅食工蚁的数量也低于未暴露于吡虫啉的亚群。在种间对抗中，吡虫啉极大地增加了通常处于从属地位的物种(黄飞虱)的攻击性(平均攻击遭遇次数增加了3.7倍)，而对处于劣势的物种(黑夜蛾)没有影响(平均攻击遭遇次数增加了1.2倍)。攻击性遭遇的频率很高。黄油。未暴露的L。黑人工人的生存概率显著下降到60%。观察到的这两个蚂蚁物种的行为变化有可能损害它们的生存能力和与行为主导物种的共存，这是因为剥削性竞争减少，在竞争对手之前找到和使用资源的机会减少。由于竞争被认为是构建蚂蚁群落的关键，攻击性的变化可能会改变已建立的优势等级，从而改变蚂蚁群落的动态和结构。
Neonicotinoid pesticides, such as the widely used compound imidacloprid, are suspected to impair cognitive capacity, behaviour, and fitness of a number of non-target species. We tested whether sublethal imidacloprid concentrations alter the foraging and aggression behaviour of two European ant species. Even though the nestmate-recruitment ofLasius nigerwas not affected by pesticide exposure, these ants required more time to become active and the number of foraging workers was lower than in sub-colonies not exposed to imidacloprid. In interspecific confrontations, imidacloprid increased the aggressiveness of a usually subordinate species (Lasius flavus) enormously (3.7-fold increase in average number of aggressive encounters), whereas they did not affect a subdominant species (L. niger) that severely (1.2-fold increase in average number of aggressive encounters). The high frequency of aggressive encounters ofL. flavusvs. non-exposedL. nigerworkers, reduced their survival probability significantly down to 60 %. The observed behavioural alterations of the two ant species have the potential to impair their viability and co-occurrence with behaviourally dominate species due to a decreased exploitative competition and a reduced chance to locate and use resources before competitors. As competition is considered key in structuring ant communities, changes in aggressiveness are likely to alter established dominance hierarchies and thereby the dynamic and structure of ant communities.
影响因子：
64.8
作者：
Riley, JR;Greggers, U;Menzel, R
通讯作者：
Menzel, R