Honey bee dance decoding and pollen-load analysis show limited foraging on spring-flowering oilseed rape, a potential source of neonicotinoid contamination
Honey bee dance decoding and pollen-load analysis show limited foraging on spring-flowering oilseed rape, a potential source of neonicotinoid contamination
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DOI：
10.1016/j.agee.2014.12.009
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发表时间：
2015-05-01
影响因子：
6.6
通讯作者：
Ratnieks, Francis L. W.
中科院分区：
文献类型：
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作者：
Garbuzov, Mihail;Couvillon, Margaret J.;Ratnieks, Francis L. W.
用于处理蜜蜂吸引作物种子的新烟碱类杀虫剂在花蜜和花粉中以痕量存在。由于对蜜蜂可能造成的伤害，欧盟委员会从2013年起实施了为期两年的预防性暂停在吸引蜜蜂的作物上使用类烟碱。最近的实验室和半田间研究的殖民地水平的影响，烟碱类假定排他或接近排他的殖民地觅食的处理作物。但这是一个现实的假设吗？在英国布赖顿及其附近的两个邻近地点（城市和农村）的两个春季（2011/12年4月至5月）监测了6个蜜蜂（Apis mellifera）群体，以量化对油菜（英国最广泛的蜜蜂吸引力作物）的觅食，通过解码摇摆舞和捕获花粉。该研究区域是英国农业景观的代表，因为农村地区周围开花油菜田的面积覆盖率与全国平均水平相似（3.3-3.9% vs 3.1%）。舞蹈解码表明，油菜田的觅食量是可变的，但很低，0-0.02%的城市和2-26%的农村位置。几乎所有的觅食（91- 99%）都在2公里以内，尽管蜜蜂可以在10公里以上的距离觅食。2012年的花粉捕获支持了舞蹈解码的结果，油菜花粉占采集者从农村收集的花粉粒的14%，占城市蜂巢的4%。这项研究的结果对政策的影响，因为他们对以前在实验室和半野外环境中进行的一些关于群体水平对社会蜜蜂影响的研究的普遍性表示怀疑。(C)2014爱思唯尔有限公司版权所有。
Neonicotinoid insecticides used to treat the seeds of bee-attractive crops occur in trace amounts in nectar and pollen. Possible harm to bees has resulted in the European Commission imposing a precautionary two-year moratorium on the use of neonicotinoids on bee-attractive crops from 2013. Recent laboratory and semi-field studies on colony-level effects of neonicotinoids assumed exclusive or near-exclusive levels of colony foraging on a treated crop. But is this a realistic assumption? Six honey bee (Apis mellifera) colonies were monitored over two springs (April-May 2011/12) in two neighbouring locations (urban and rural) in and near Brighton, UK, to quantify foraging on oilseed rape, the most widespread beeattractive crop in the UK, by decoding waggle dances and trapping pollen. The study area was representative of the UK agricultural landscape in that the percentage area cover of the blooming oilseed rape fields around the rural location was similar to the national average (3.3-3.9% vs 3.1%). The amount of foraging on oilseed rape fields, as indicated by dance decoding, was variable, but low, 0-0.02% for the urban and 2-26% for the rural location. Almost all foraging, 91-99%, was within 2 km, even though honey bees can forage at distances of over 10 km. Pollen trapping in 2012 supported the dance decoding results, with oilseed rape pollen comprising 14% of pollen pellets collected by foragers from rural and 4% from urban hives. The results of this study have implications for policy as they cast doubt on the generality of some previous studies on colony-level effects on social bees conducted in laboratory and semi-field settings. (C) 2014 Elsevier B.V. All rights reserved.