消费者身份而非食物供应会影响食蚁兽在谷类作物中的食性。

4区 医学 Q2 Medicine
Yasemin Guenay-Greunke, Harald Trager, David A Bohan, Michael Traugott, Corinna Wallinger
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引用次数: 0

摘要

了解农业生态系统中的营养相互作用对于利用害虫控制等生态系统服务,从而减少杀虫剂的使用至关重要。鞘翅目甲虫(鞘翅目:Carabidae)不仅可以控制害虫,还可以控制杂草种子和蛞蝓。本研究的目的是在谷物田的实验环境中调查不同食肉目甲虫物种对食物的选择。除了不同的食物供应情况外,还应仔细研究物种特征和季节对食螨食物选择的影响。因此,通过诊断性多重聚合酶链式反应和巢式代谢编码方法对 8 个食肉目甲虫物种的 1120 只甲虫的肠道内容物进行了植物、蚜虫、春蜱、蚯蚓和蛞蝓 DNA 的筛选,以确定植物物种。植物 DNA 的检测率(72%)远高于各类动物猎物(均低于 12.5%)。在检测到的植物中,有 80 个杂草物种被元条码鉴定出来,其中 Galinsoga parviflora/quadriradiata (Galinsoga spp.食肉动物的食物选择受其物种特征和季节性的影响,而种子和蛞蝓的增加对其食物选择没有影响。虽然杂草种子似乎是食肉目动物的重要食物来源,但其供应量并不直接影响食肉目动物的食物。消费者身份和季节性的重要性突出表明,需要一个多样化的食蚁兽物种群落来提供有弹性的害虫控制服务:在线版本包含补充材料,可查阅 10.1007/s10340-023-01620-w。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Consumer identity but not food availability affects carabid diet in cereal crops.

Understanding trophic interactions in agroecosystems is crucial for harnessing ecosystem services such as pest control, thus enabling a reduction in pesticide use. Carabid beetles (Coleoptera: Carabidae) have the potential to regulate not only insect pests but also weed seeds and slugs. The aim of this study was to investigate the food choice of different carabid species in the experimental setting of a cereal field with varying seed and slug prey availability during the season. In addition to varying food availability, the effects of species identity and season on carabid food choice should also be closely examined. Therefore, the gut contents of 1,120 beetles of eight carabid species were screened for the DNA of plants, aphids, springtails, earthworms and slugs via diagnostic multiplex PCR and a nested metabarcoding approach for plant species identification. Plant DNA was detected far more often (72%) than the various animal prey types (less than 12.5% each). Within the plant detections, 80 weed species were identified in the metabarcoding, with Galinsoga parviflora/quadriradiata (Galinsoga spp.-quickweeds) as the most frequently detected species. Carabid food choice was driven by their species identity and seasonality, while no effect of increased availability of seeds and slugs on their food choice was detected. While weed seeds seem to be an important food source for carabids, their availability does not directly affect the carabid diet. The importance of consumer identity and seasonality highlight the need for a diverse carabid species community for resilient pest control services.

Supplementary information: The online version contains supplementary material available at 10.1007/s10340-023-01620-w.

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来源期刊
Journal of Environmental and Public Health
Journal of Environmental and Public Health PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH-
自引率
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发文量
678
期刊介绍: Journal of Environmental and Public Health is a peer-reviewed, Open Access journal that publishes original research articles, review articles, and clinical studies covering all population-wide health issues. The journal serves the public health community, including epidemiologists, clinicians, toxicologists, governmental agencies, policy makers, and NGOs. Articles on health issues relating to the natural and built environment are particularly welcome, including occupational medicine research and practice.
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