Edge effects and mating patterns in a bumblebee-pollinated plant
Edge effects and mating patterns in a bumblebee-pollinated plant
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熊蜂授粉植物的边缘效应和交配模式
DOI：
10.1093/aobpla/plaa033
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发表时间：
2020
期刊：
影响因子：
2.9
通讯作者：
Karron, Jeffrey D
中科院分区：
文献类型：
--
作者：
Christopher, Dorothy A;Mitchell, Randall J;Trapnell, Dorset W;Smallwood, Patrick A;Semski, Wendy R;Karron, Jeffrey D
研究人员长期以来一直认为植物的空间位置会影响植物的繁殖成功和传粉昆虫的觅食行为。例如，许多开花植物种群具有较小的、线性或不规则的形状，这增加了边缘植物的比例，这可能会减少通过雄性和雌性功能的交配机会。此外，如果这些授粉媒介表现出觅食受限且花粉携带有限，则依赖授粉媒介的植物可能特别容易受到边缘效应的影响。为了探索空间位置（边缘与内部）对繁殖成功、种子生产、传粉媒介觅食模式和花粉介导的基因传播的影响，我们建立了 49 株猴花植物的方形实验阵列。我们观察了授粉大黄蜂的觅食模式，并使用亲子分析来量化边缘与内部植物的雄性和雌性繁殖成功率以及交配多样性。我们发现边缘植物和内部植物在种子数量、母本数量或每个果实的种子数量方面没有显着差异。然而，我们发现基于植物位置的传粉者行为存在很大差异，包括每朵花的访问率降低 15%，边缘植物的间种移动时间明显更长。这意味着边缘植物的花粉介导的基因传播比内部植物高出 40%。总的来说，我们的结果表明边缘效应并不像通常假设的那么强，并且不同的植物繁殖参数独立地响应空间位置。
Researchers have long assumed that plant spatial location influences plant reproductive success and pollinator foraging behaviour. For example, many flowering plant populations have small, linear or irregular shapes that increase the proportion of plants on the edge, which may reduce mating opportunities through both male and female function. Additionally, plants that rely on pollinators may be particularly vulnerable to edge effects if those pollinators exhibit restricted foraging and pollen carryover is limited. To explore the effects of spatial location (edge vs. interior) on siring success, seed production, pollinator foraging patterns and pollen-mediated gene dispersal, we established a square experimental array of 49Mimulus ringens(monkeyflower) plants. We observed foraging patterns of pollinating bumblebees and used paternity analysis to quantify male and female reproductive success and mate diversity for plants on the edge versus interior. We found no significant differences between edge and interior plants in the number of seeds sired, mothered or the number of sires per fruit. However, we found strong differences in pollinator behaviour based on plant location, including 15 % lower per flower visitation rates and substantially longer interplant moves for edge plants. This translated into 40 % greater pollen-mediated gene dispersal for edge than for interior plants. Overall, our results suggest that edge effects are not as strong as is commonly assumed, and that different plant reproduction parameters respond to spatial location independently.
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植物异常值：生态遗传学视角
DOI：
10.1086/285730
发表时间：
1995
期刊：
The American Naturalist
影响因子：
--
作者：
D. Levin
通讯作者：
D. Levin
影响因子：
3
作者：
Nunziata, Schyler O.;Karron, Jeffrey D.;Trapnell, Dorset W.
通讯作者：
Trapnell, Dorset W.
影响因子：
2.2
作者：
Cresswell, JE
通讯作者：
Cresswell, JE
影响因子：
3.7
作者：
Brunet, Johanne;Zhao, Yang;Clayton, Murray K.
通讯作者：
Clayton, Murray K.
影响因子：
3
作者：
Karron, Jeffrey D.;Mitchell, Randall J.;Bell, John M.
通讯作者：
Bell, John M.