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在状虫中自食补偿了新热带山林中食蝙蝠提供的有限的授粉服务

Stephanie Núñez-Hidalgo¹, Alfredo Cascante-Marín²

¹Sistema de Estudios de Posgrado, Universidad de Costa Rica, San Pedro de Montes de Oca, 11501-2060 San José, Costa Rica.

|March 18, 2024

概括

哥斯达黎加的蝙蝠授粉的花表现出高的自我授粉率,因为授粉者访问有限. 当交叉授粉不足时,延迟的自我保证了繁殖成功,加强了自我持久性.

科学领域:

生态生态学生态生态学
进化生物学进化生物学
植物学植物学

背景情况:

植物中的专门授粉系统经常与自我授粉并存,这种现象可以通过繁殖保证来解释.
新热带植物,包括多种类型的叶植物,经常依赖脊椎动物授粉者,但也表现出自我授粉的倾向.
现有证据表明,selfing在叶虫和其他新热带地区植物中的作用仍然是不确定的.

研究的目的:

为了调查bromeliaceae的繁殖系统中的自我受精的进化和持久性.
分析哥斯达黎加四种交配的形植物Werauhia物种的花生物学,授粉生态和繁殖系统.
量化自我对繁殖成功的贡献,与授粉者可用性相关.

主要方法:

通过比较果实设置在化 (依赖授粉者) 与未经操纵 (能够自我) 的花朵来评估自我贡献.
记录了花生物学和授粉生态,包括通过视频记录的蝙蝠访问率.
量化自生育指数和内生育抑郁对种子和发芽的影响.

主要成果:

研究的Werauhia物种通过延迟的自我授粉,表现出由食蜜的蝙蝠进行专业授粉,以及通过延迟的自我授粉,具有高的自我授粉能力 (自生育指数>0.53).
自然交叉授粉的成功率很低 (<26%),蝙蝠访问率非常低 (00.24次/植物/夜).
自主自我授粉对未经操纵的花朵的果 (5480%) 产生了显著的贡献.

结论:

由于蝙蝠访问有限,不充分的交叉授粉服务减少了Werauhia物种的繁殖成功.
延迟的自我机制补偿了不够的交叉授粉,确保了繁殖的保证.
亲生繁殖对种子和发芽成功的低负面影响可能有助于这种蝶系中自我繁殖的持续存在,这表明自我繁殖是为了应对授粉者限制而演变的.

关键词:

繁殖系统繁殖系统布罗梅利亚科布罗梅利亚科哥斯达黎加哥斯达黎加整形手术的方法整形手术授粉者限制授粉者的限制生殖保证产生的保证.

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