Disease where you dine: plant species and floral traits associated with pathogen transmission in bumble bees.
Disease where you dine: plant species and floral traits associated with pathogen transmission in bumble bees.
复制标题
DOI：
10.1002/ecy.2503
复制
发表时间：
2018-11
期刊：
影响因子：
4.8
通讯作者：
Irwin RE
中科院分区：
文献类型：
--
作者：
Adler LS;Michaud KM;Ellner SP;McArt SH;Stevenson PC;Irwin RE
疾病传播热点对病原体传播有很强的影响。蜜蜂病原体可能通过共用花卉传播，但植物种类和花卉性状变异在形成传播动态中的作用几乎完全未被探索。鉴于病原体对几种蜜蜂物种衰落的重要性，了解植物物种和花卉性状是否以及如何影响传播可以为我们提供重要的工具来预测哪些植物物种可能是疾病传播的热点。我们评估了锥虫肠道病原体Crithadia ombi通过敏感度(感染概率)和平均强度(感染蜜蜂的细胞计数)传播给未感染熊蜂的工作人员在14种植物上觅食的差异，并评估了花卉性状、蜜蜂大小和觅食行为在传播中的作用。我们还进行了一项操纵性实验，以确定开放的花数如何影响三种植物--洋地黄、水母和百里香的传播。在觅食大黄蜂(平均包括感染和未感染的蜜蜂)时，植物物种的总体平均克里迪亚虫丰度差异四倍。在植物物种中，蜜蜂的敏感度和平均强度随着每个花序(花蕾、花和果实)繁殖结构的数量而增加；较小的蜜蜂和觅食时间较长的蜜蜂也更容易受到影响。在根据AIC值预测易感性和平均强度方面，基于特征的模型与基于物种的模型一样好或更好。令人惊讶的是，花的大小和形态并没有显著地预测跨物种的传播。在操作实验中，越开的花使Monarda的平均病原菌数量增加4倍，而对其他两种植物的影响不大。我们的结果表明，植物物种之间的差异，通过它们对病原体传播的影响，可能会影响蜜蜂疾病的动态。鉴于对传粉者友好种植的广泛投资以支持传粉者，了解植物物种如何影响疾病传播对于推荐优化传粉者健康的植物物种非常重要。
Hotspots of disease transmission can strongly influence pathogen spread. Bee pathogens may be transmitted via shared floral use, but the role of plant species and floral trait variation in shaping transmission dynamics is almost entirely unexplored. Given the importance of pathogens for the decline of several bee species, understanding whether and how plant species and floral traits affect transmission could give us important tools for predicting which plant species may be hotspots for disease spread. We assessed variation in transmission via susceptibility (probability of infection) and mean intensity (cell count of infected bees) of the trypanosomatid gut pathogen Crithidia bombi to uninfected Bombus impatiens workers foraging on 14 plant species, and assessed the role of floral traits, bee size and foraging behavior on transmission. We also conducted a manipulative experiment to determine how the number of open flowers affected transmission on three plant species, Penstemon digitalis, Monarda didyma, and Lythrum salicaria. Plant species differed fourfold in the overall mean abundance of Crithidia in foraging bumble bees (mean including infected and uninfected bees). Across plant species, bee susceptibility and mean intensity increased with the number of reproductive structures per inflorescence (buds, flowers and fruits); smaller bees and those that foraged longer were also more susceptible. Trait-based models were as good or better than species-based models at predicting susceptibility and mean intensity based on AIC values. Surprisingly, floral size and morphology did not significantly predict transmission across species. In the manipulative experiment, more open flowers increased mean pathogen abundance fourfold in Monarda, but had no effect in the other two plant species. Our results suggest that variation among plant species, through their influence on pathogen transmission, may shape bee disease dynamics. Given widespread investment in pollinator-friendly plantings to support pollinators, understanding how plant species affect disease transmission is important for recommending plant species that optimize pollinator health.
登录
查看更多内容
影响因子：
2.7
作者：
Montgomery, Benjamin R.;Rathcke, Beverly J.
通讯作者：
Rathcke, Beverly J.
影响因子：
3.3
作者：
Ruiz-Gonzalez, Mario X.;Bryden, John;Brown, Mark J. F.
通讯作者：
Brown, Mark J. F.
影响因子：
64.8
作者：
通讯作者：
--
影响因子：
5.9
作者：
Colla, Sheila R.;Otterstatter, Michael C.;Thomson, James D.
通讯作者：
Thomson, James D.
DOI：
10.1098/rspb.2005.3423
发表时间：
2006-05-07
影响因子：
4.7
作者：
Gegear, RJ;Otterstatter, MC;Thomson, JD
通讯作者：
Thomson, JD