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食蜜蜂种类不同地优先考虑花奖励的数量和质量
Jaya Sravanthi Mokkapati1, Michael Hill1, Natalie K Boyle1
1Department of Entomology, Center for Pollinator Research, Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA 16802, USA.
PNAS nexus
|October 16, 2024
概括
蜜蜂对花资源的优先级是不同的. 一种蜜蜂更喜欢更多的花朵,而另一种蜜蜂更喜欢花粉营养更好的花朵,影响植物-授粉者网络.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 行为生态学 行为生态学
背景情况:
- 授粉者与植物之间的相互作用对于生态系统的生物多样性至关重要.
- 减少的开花植物威胁着授粉者种群.
- 蜜蜂的食决定取决于资源的数量和质量,但优先级不清楚.
研究的目的:
- 调查影响蜜蜂食决策的花因素.
- 确定蜜蜂是否优先考虑资源的数量 (花数) 或质量 (花粉营养).
- 了解单身蜜蜂的不同食策略.
主要方法:
- 产生了 *Capsella* 种类的重组杂交系,以改变花特征.
- 在封闭的竞技场中观察到Osmia cornifrons和Megachile rotundata的食行为.
- 使用人工花来确认对花粉营养含量 (蛋白质:脂质比) 的偏好.
主要成果:
- *Osmia cornifrons*的访问与花的数量有积极的相关性.
- *Megachile轮回数据*访问与花粉的营养质量有积极的相关性,喜欢更高的蛋白质:脂质比率.
- 营养含量没有影响 *O. cornifrons* 的访问,但确实影响了 *M. rotundata*.
结论:
- 孤独的蜜蜂表现出不同的食策略,优先考虑植物资源的数量或质量.
- 这些差异化策略影响着植物-授粉者生态网络的演变和动态.
- 了解这些偏好是保护蜜蜂种群和植物生物多样性的关键.
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