The carry‐over effects of pollen shortage decrease the survival of honeybee colonies in farmlands
The carry‐over effects of pollen shortage decrease the survival of honeybee colonies in farmlands
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花粉短缺的遗留影响降低了农田中蜂群的生存率
DOI：
10.1111/1365-2664.12836
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发表时间：
2017
影响因子：
5.7
通讯作者：
V. Bretagnolle
中科院分区：
文献类型：
--
作者：
F. Requier;J. Odoux;Mickaël Henry;V. Bretagnolle
1.许多研究报道了在人类主导的景观中蜂群的损失。
虽然蜜蜂的花卉食物资源在过去几十年里急剧减少，但在人类活动中
在景观方面，还没有进行实地研究来确定是否有
植物区系资源可获得性的季节性中断与高种群的留存效应
损失。
2.我们调查了春季蜜蜂花粉采收量的下降是否影响了
蜜蜂群体动态(孵化数量、成虫数量和蜂蜜储量)与健康
在整个养蜂季节，最大的风险是(瓦螨载量和群体存活)。
3.花粉收获量的下降与孵化产量的直接减少有关，
导致在季节后期对成虫种群数量产生负面影响，并导致蜂蜜减少
在冬季来临之前进行储备。此外，花粉收获量的下降也带来了负面影响
影响了蜂群的健康，导致Varroa螨类负荷较高，季节性较高
和冬季殖民地的损失。
4.查明了这些结转效应的早期预警迹象，表明
对蜂蜜储备的投资，而不是在季节早期生产蜂蜜，增加了
花粉收获量下降及其相关的结转效应。
5.合成与应用。结果表明，花粉收获量的下降可能对
作为花粉短缺和相关的蜂群损失的一个原因而被忽视。战略以实现
在集约农田系统中避免这种损失包括：(一)限制或避免蜂蜜收获
在春季，(Ii)监测蜂群以获得蜂群失败的早期预警信号，以及(Iii)增加
通过明智的土地利用管理可获得的花卉资源的数量。
1. Many studies have reported honeybee colony losses in human-dominated landscapes.
While bee floral food resources have been drastically reduced over past decades in humandominated
landscapes, no field study has yet been undertaken to determine whether there is a
carry-over effect between seasonal disruption in floral resource availability and high colony
losses.
2. We investigated if a decline in the harvest of pollen by honeybees in spring affected managed
honeybee colony dynamics (brood size, adult population and honey reserves) and health
(Varroa mite loads and colony survival) throughout the beekeeping season.
3. A decline in pollen harvest was associated with a direct reduction in brood production,
leading to a negative effect on the adult population size later in the season, and lower honey
reserves before the onset of winter. Furthermore, the decline in pollen harvest negatively
impacted the health of the colony, resulting in higher Varroa mite loads and higher seasonal
and winter colony losses.
4. Early-warning signs of these carry-over effects were identified, showing that preferential
investment in honey reserves instead of brood production early in the season increased the
decline in pollen harvest and its associated carry-over effects.
5. Synthesis and applications. The results suggest that the decline in pollen harvest may have
been overlooked as a cause of pollen shortage and associated bee colony losses. Strategies to
avoid such losses in intensive farmland systems include (i) limiting or avoiding honey harvests
in spring, (ii) monitoring colonies for early-warning signals of colony failure and (iii) increasing
the amount of floral resources available through wise land-use management.
多重压力源：使用蜜蜂模型 BEEHAVE 探索时空草料压力如何影响蜂群恢复力
影响因子：
3.4
作者：
Horn J
通讯作者：
Horn J