期刊
SCIENTIFIC REPORTS
卷 7, 期 -, 页码 -出版社
NATURE PORTFOLIO
DOI: 10.1038/s41598-017-08380-5
关键词
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资金
- European Community Program for French beekeeping [11-42R]
- Region Provence Alpes Cote d'Azur (PACA)
- department Sante des Plantes & Environnement of the French National Institute for Agricultural Research (INRA)
- company Apiculture Remuaux
The honey bee is threatened by biological agents and pesticides that can act in combination to induce synergistic effects on its physiology and lifespan. The synergistic effects of a parasite/pesticide combination have been demonstrated on workers and queens, but no studies have been performed on drones despite their essential contribution to colony sustainability by providing semen diversity and quality. The effects of the Nosema ceranae/fipronil combination on the life traits and physiology of mature drones were examined following exposure under semi-field conditions. The results showed that the microsporidia alone induced moderate and localized effects in the midgut, whereas fipronil alone induced moderate and generalized effects. The parasite/insecticide combination drastically affected both physiology and survival, exhibiting an important and significant generalized action that could jeopardize mating success. In terms of fertility, semen was strongly impacted regardless of stressor, suggesting that drone reproductive functions are very sensitive to stress factors. These findings suggest that drone health and fertility impairment might contribute to poorly mated queens, leading to the storage of poor quality semen and poor spermathecae diversity. Thus, the queens failures observed in recent years might result from the continuous exposure of drones to multiple environmental stressors.
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