本地和引入的蜜蜂授粉者之间功能特征不匹配,为全球水果作物作物提供服务
Olivia M Bernauer1,2, Michael G Branstetter3, James M Cook4
1Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia. ombernauer@wisc.edu.
BMC ecology and evolution
|August 2, 2024
概括
有自然景观的果园支持比受干扰的更多样化的蜜蜂授粉者,突出了功能性特征对授粉服务的重要性. 对蜜蜂的威胁可能会破坏作物授粉,因为它们与本土蜜蜂的功能重叠有限.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 保护生物学 保护生物学
背景情况:
- 生态系统服务,如授粉,越来越多地通过功能特征和遗传学方法来理解,超越了简单的物种丰富性.
- 在澳大利亚,被自然景观所包围的果园与被破坏的景观被研究,以比较花鸟授粉者社区.
- 这项研究评估了授粉者的功能特征和植物遗传模式,以了解它们在果授粉中的作用.
研究的目的:
- 调查果园中女鸟授粉者的功能生态和遗传学多样性.
- 为了确定功能性特征是否表现出非随机的原始遗传模式.
- 探索蜜蜂的功能实体 (FE) 并评估不同景观类型中的功能冗余性.
主要方法:
- 使用超保守元素 (UCE) 构建48种羽毛鸟形态物种的最大概率类遗传学分析.
- 对植物遗传信号的形态和行为特征 (毛发,身体尺寸,光长度,花粉负载纯度,松散花粉) 的评估.
- 使用每个景观的功能实体 (FE) 计算植物遗传多样性和功能丰富性,均性和转移.
主要成果:
- 自然景观中的授粉者群体表现出比扰乱的景观更高的遗传学复杂性和功能分歧.
- 蜜蜂毛发是唯一具有显著的遗传信号的特征;其他特征显示较弱或没有遗传关联.
- 尽管景观不同,但两者都支持相同数量的蜜蜂功能实体 (FE),引入的蜜蜂占据了一个独特的FE.
结论:
- 蜜蜂的毛发是具有遗传学信号的关键功能特征,影响着授粉服务.
- 虽然这两种景观类型的蜜蜂FE数量相似,但本地蜜蜂并没有完全功能地取代蜜蜂.
- 对蜜蜂种群的威胁对依赖授粉的作物构成重大风险,原因是授粉者组合的功能冗余性较低.
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