Behavioral Responses of Imidacloprid-Dosed Farmland Birds to a Simulated Predation Risk,Environmental Science & Technology

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Behavioral Responses of Imidacloprid-Dosed Farmland Birds to a Simulated Predation Risk
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2024-07-21 , DOI: 10.1021/acs.est.4c01893
Laura M Addy-Orduna _{1,

2} , Manuel E Ortiz-Santaliestra ₂ , François Mougeot ₂ , Paula Bolívar-Muñoz ₂ , Pablo R Camarero ₂ , Rafael Mateo _{2,

3}

Affiliation

Sublethal exposure to imidacloprid and other neonicotinoid insecticides may affect the neurological functions of birds. As such, behavior may be compromised. Here, we tested experimentally the effects of 1 and 6 mg/kg bw of imidacloprid on the antipredator behavioral responses of the red-legged partridge (Alectoris rufa) to simulated predator threats. Sixty-six partridges were challenged in groups or individually to intra- and interspecific alarm calls, to a raptor silhouette (aerial predation risk), and to a fox model (terrestrial predation risk). Antipredator behaviors were recorded as active (escape, active vigilance) and passive (passive vigilance, crouching, and freezing) responses. Latency in response to the stimuli, percentage of individuals who responded, response duration, speed of active responses, and vocalizations were measured. In experiments with partridges in the group, crouching against simulated predation risk lasted less time in birds treated with 6 mg a.i./kg bw than in control birds. In the experiments with individual partridges, passive vigilance against the intraspecific alarm lasted longer in birds treated with 6 mg a.i./kg bw than in control birds. The observed hyperreactivity to the predatory threat after a sublethal imidacloprid exposure can have consequences on survival under field conditions, where predation is a main driver of population dynamics.

中文翻译：

施用吡虫啉的农田鸟类对模拟捕食风险的行为反应

亚致死接触吡虫啉和其他新烟碱类杀虫剂可能会影响鸟类的神经功能。因此，行为可能会受到损害。在这里，我们通过实验测试了 1 和 6 毫克/千克体重的吡虫啉对红腿鹧鸪 ( Alectoris rufa ) 对模拟捕食者威胁的反捕食行为反应的影响。 66 只鹧鸪分组或单独接受种内和种间警报叫声、猛禽剪影（空中捕食风险）和狐狸模型（陆地捕食风险）的挑战。反捕食者行为被记录为主动（逃跑、主动警惕）和被动（被动警惕、蹲伏和冻结）反应。测量了对刺激的反应潜伏期、做出反应的个体的百分比、反应持续时间、主动反应的速度和发声。在对鹧鸪组进行的实验中，用 6 mg ai/kg bw 处理的鸟类比对照鸟类蹲下以应对模拟捕食风险的时间更短。在对个别鹧鸪进行的实验中，用 6 毫克有效成分/千克体重处理的鸟类比对照鸟类对种内警报的被动警惕持续时间更长。在亚致死的吡虫啉暴露后观察到的对捕食威胁的过度反应可能会对野外条件下的生存产生影响，在野外条件下，捕食是种群动态的主要驱动因素。

更新日期：2024-07-21

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