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暴露于气候变化的蜜蜂对农药更为敏感

Sergio Albacete^1,2, Gonzalo Sancho^1,2, Celeste Azpiazu^1,3

¹Universitat Autònoma de Barcelona, Bellaterra, Spain.

Global change biology

|September 1, 2023

概括

越来越温暖的冬季和对杀虫剂的暴露协同损害了单身蜜蜂 (Osmia cornuta),缩短了它们的寿命并增加了对农药的敏感性. 这凸显了气候变化和农药对蜜蜂健康的综合影响.

科学领域:

生态生态学生态生态学
环境科学环境科学
毒理学毒理学毒理学

背景情况:

蜜蜂种群面临多种相互作用的压力因素,包括气候变化和农药暴露.
以前的研究表明,温暖的冬季温度对单身蜜蜂生理学产生负面影响,影响对排毒至关重要的脂肪体储备.
脂肪体在异生菌排毒中的作用表明,在变暖情景下,农药敏感性可能会增加.

研究的目的:

分析气候变暖和次致命杀虫剂暴露对孤独蜜蜂Osmia cornuta的综合影响.
为了研究不同冬季温度和硫黄剂量如何影响蜜蜂的行为和生存.

主要方法:

雌性Osmia cornuta受到了三个冬季温度场景 (当前,近期,遥远的未来).
新生蜂被口服暴露在昆虫杀虫剂硫酸的次致命剂量 (0.4.55,11.64 ng/蜂).
测量了光学反应,糖消耗和寿命,以评估联合压力因素的影响.

主要成果:

温暖的冬季温度增加了体重减轻,并减少了寿命.
暴露于杀虫剂,特别是高剂量,损害了光学反应,减少了糖的消费,并减少了寿命.
观察到一个协同作用的相互作用:最温暖的冬天和最高的杀虫剂剂量的组合减少了70%的寿命.

结论:

气候变暖和杀虫剂暴露相互作用,显著增加了蜜蜂的死亡率.
据预测,在全球变暖情景下,蜜蜂对农药变得更加敏感.
这些发现强调了在农药监管和蜜蜂减少研究中需要考虑多种压力因素的必要性.

关键词:

奥斯米亚·科尔努塔 (Osmia cornuta) 是一个身体的尺寸身体的大小气候变化气候变化气候变化全球变暖全球变暖长寿长寿是一个问题.营养方面的压力.对农药的暴露农药的暴露硫甲的使用方法有协同效应的效应.毒性的毒性毒性的毒性

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