Floral resource diversification promotes solitary bee reproduction and may offset insecticide effects - evidence from a semi-field experiment

Klaus Felix; Tscharntke Teja; Bischoff Gabriela; Grass Ingo

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Floral resource diversification promotes solitary bee reproduction and may offset insecticide effects - evidence from a semi-field experiment

机译：花卉资源多样化促进孤立蜜蜂繁殖，可能抵消杀虫剂效应 - 来自半场实验的证据

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Pollinator declines in agricultural landscapes are driven by multiple stressors, but potential interactions of these remain poorly studied. Using a highly replicated semi-field study with 56 mesocosms of varying wild plant diversity (2-16 species) and oilseed rape treated with a neonicotinoid, we tested the interacting effects of resource diversity and insecticides on reproduction of a solitary wild bee. Compared to mesocosms with oilseed rape monocultures, availability of resources from wild plants complementing oilseed rape doubled brood cell production. In addition, bee reproduction increased due to plant diversity and identity effects. Exposure to neonicotinoid-treated oilseed rape reduced bee larval to adult development by 69%, but only in mesocosms with oilseed rape monocultures. Availability of complementary flower resources can thus offset negative effects of neonicotinoid-treated oilseed rape on wild bee reproduction. Policy should encourage the implementation of diverse floral resources mitigating negative effects of crop monocultures and insecticides, thereby sustaining solitary bee populations in agricultural landscapes.

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来源
《Ecology letters》 |2021年第4期|共8页
作者
Klaus Felix; Tscharntke Teja; Bischoff Gabriela; Grass Ingo;
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作者单位

Univ Gottingen Agroecol Gottingen Germany;

Univ Gottingen Agroecol Gottingen Germany;

Julius Kuhn Inst JKI Fed Res Ctr Cultivated Plants Inst Bee Protect Berlin Germany;

Univ Gottingen Agroecol Gottingen Germany;

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原文格式 PDF
正文语种 eng
中图分类普通生物学;
关键词
Complementary resources; neonicotinoids; Osmia bicornis; plant diversity and identity; pollinator declines;

机译：互补资源;新烟碱蛋白;Osmia Bicornis;植物多样性和身份;粉刷司机下降;

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机译：在笼子实验中红梅森蜜蜂无法与蜜蜂争夺花卉资源
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机译：拟除虫菊酯类杀虫剂氰戊菊酯沉积物残留对底栖类桡足类生存和繁殖的影响

Floral resource diversification promotes solitary bee reproduction and may offset insecticide effects - evidence from a semi-field experiment

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