Agriculture shapes the trophic niche of a bat preying on multiple pest arthropods across Europe: Evidence from DNA metabarcoding
Agriculture shapes the trophic niche of a bat preying on multiple pest arthropods across Europe: Evidence from DNA metabarcoding
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DOI：
10.1111/mec.14474
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发表时间：
2018-02-01
影响因子：
4.9
通讯作者：
Alberdi, Antton
中科院分区：
文献类型：
--
作者：
Aizpurua, Ostaizka;Budinski, Ivana;Alberdi, Antton
农业生产和野生动物之间的相互作用可以塑造，甚至条件，这两个系统的功能。在这项研究中，我们i）探讨了一种广泛分布的欧洲蝙蝠，即常见的蝙蝠，在大陆范围内消耗农作物破坏昆虫的程度，ii）测试其饮食生态位是否由农田的扩展和类型所塑造。我们采用了双引物DNA metabarcoding的方法来表征节肢动物16S和COI的DNA序列内的蝙蝠粪便颗粒收集在16个南欧地区，首先描述蝙蝠物种的饮食生态位，第二次测量其范围内的农业害虫的发病率，第三次评估地理饮食变化是否响应气候，景观多样性，农业类型和植被生产力因素。共检出节肢动物12目，其中鳞翅目占优势。我们确定了超过200种，其中44种已知会造成农业损害。除一个采样点外，在所有采样点和94%的分析样本中均检测到害虫物种。此外，M. schreibersii表现出负线性关系的面积密集的农业领域，从而表明作物限制的饮食生态位的蝙蝠捕食类群与农业生产在其觅食范围内。总的来说，我们的研究结果表明，M。schreibersii可能是在各种农业生产中生物抑制害虫的宝贵资产，并突出了野生动物和农业系统之间的动态相互作用。
The interaction between agricultural production and wildlife can shape, and even condition, the functioning of both systems. In this study, we i) explored the degree to which a widespread European bat, namely the common bent-wing bat Miniopterus schreibersii, consumes crop-damaging insects at a continental scale, and ii) tested whether its dietary niche is shaped by the extension and type of agricultural fields. We employed a dual-primer DNA metabarcoding approach to characterize arthropod 16S and COI DNA sequences within bat faecal pellets collected across 16 Southern European localities, to first characterize the bat species' dietary niche, second measure the incidence of agricultural pests across their ranges and third assess whether geographical dietary variation responds to climatic, landscape diversity, agriculture type and vegetation productivity factors. We detected 12 arthropod orders, among which lepidopterans were predominant. We identified >200 species, 44 of which are known to cause agricultural damage. Pest species were detected at all but one sampling site and in 94% of the analysed samples. Furthermore, the dietary diversity of M. schreibersii exhibited a negative linear relation with the area of intensive agricultural fields, thus suggesting crops restrict the dietary niche of bats to prey taxa associated with agricultural production within their foraging range. Overall, our results imply that M. schreibersii might be a valuable asset for biological pest suppression in a variety of agricultural productions and highlight the dynamic interplay between wildlife and agricultural systems.