Learning performances of honeybees (Apis mellifera L) are differentially affected by imidacloprid according to the season
Learning performances of honeybees (Apis mellifera L) are differentially affected by imidacloprid according to the season
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DOI：
10.1002/ps.631
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发表时间：
2003-03-01
影响因子：
4.1
通讯作者：
Pham-Delègue, MH
中科院分区：
文献类型：
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作者：
Decourtye, A;Lacassie, E;Pham-Delègue, MH
为了建立亚致死浓度域，在实验室条件下，用吡虫啉及其代谢物5- oh -吡虫啉对笼中工蜂（Apis mellifera L）进行了急性和慢性口服试验。后者48 h的口服LD50值（153 ng /只）比吡虫啉（30 ng /只）高5倍。长期饲养试验表明，吡虫啉和5- oh -吡虫啉对冬蜂死亡率的最低影响浓度（LOEC）分别为24和120马克公斤（-1）。采用嗅觉调节法研究了吡虫啉和5- oh -吡虫啉在一年中两个时期的行为效应。长期服用吡虫啉和5- oh -吡虫啉的冬蜂学习成绩下降。吡虫啉在夏季蜜蜂中的LOEC（12马克千克（-1））低于冬季蜜蜂（48马克千克（-1）），这表明夏季蜜蜂的行为比冬季蜜蜂更敏感。(C) 2003年化学工业学会。
To establish the sublethal concentrations domain, acute and chronic oral tests were conducted on caged honeybee workers (Apis mellifera L) using imidacloprid and a metabolite, 5-OH-imidacloprid, under laboratory conditions. The latter showed a 48-h oral LD50 value (153 ng per bee) five times higher than that of imidacloprid (30 ng per bee). Chronic feeding tests indicated that the lowest observed effect concentrations (LOEC) of imidacloprid and of 5-OH-imidacloprid on mortality of winter bees were 24 and 120 mug kg(-1) respectively. Behavioural effects of imidacloprid and 5-OH-imidacloprid were studied using the olfactory conditioning of proboscis extension response at two periods of the year. Winter bees surviving chronic treatment with imidacloprid and 5-OH-imidacloprid had reduced learning performances. The LOEC of imidacloprid was lower in summer bees (12 mug kg(-1)) than in winter bees (48 mug kg(-1)), which points to a greater sensitivity of honeybees behaviour in summer bees, compared to winter bees. (C) 2003 Society of Chemical Industry.