Selection on signal-reward correlation: limits and opportunities to the evolution of deceit in Turnera ulmifolia L.
Selection on signal-reward correlation: limits and opportunities to the evolution of deceit in Turnera ulmifolia L.
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DOI：
10.1111/j.1420-9101.2010.02132.x
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发表时间：
2010-12-01
影响因子：
2.1
通讯作者：
Dominguez, C. A.
中科院分区：
文献类型：
--
作者：
Benitez-Vieyra, S.;Ordano, M.;Dominguez, C. A.
由于传粉者无法直接评估花朵提供的奖励金额，他们依赖于广告花卉性状提供的信息。因此，与种群中的其他植物相比，信号和奖励之间的个体内相关性（信号准确性）较低，这为减少奖励和欺骗传粉者的投资提供了机会。然而，传粉者的认知能力可以限制这种植物欺骗策略的进化，如果他们可以惩罚那些信号准确性低的植物。在这项研究中，我们研究了作弊的机会，在多年生杂草特纳ulmifolia L。评估自然种群中信号准确性、花的展示和奖励产生的选择价值。我们发现植物繁殖成功与信号准确性和花展示呈正相关，但与花蜜产量无关。花的显示上的选择强度是三倍以上的信号准确性。这种选择模式表明，传粉者可以选择植物提供的信号准确性，并表明传粉者的学习能力可以限制T。榆叶
Because pollinators are unable to directly assess the amount of rewards offered by flowers, they rely on the information provided by advertising floral traits. Thus, having a lower intra-individual correlation between signal and reward (signal accuracy) than other plants in the population provides the opportunity to reduce investment in rewards and cheat pollinators. However, pollinators' cognitive capacities can impose a limit to the evolution of this plant cheating strategy if they can punish those plants with low signal accuracy. In this study, we examined the opportunity for cheating in the perennial weed Turnera ulmifolia L. evaluating the selective value of signal accuracy, floral display and reward production in a natural population. We found that plant reproductive success was positively related to signal accuracy and floral display, but not to nectar production. The intensity of selection on floral display was more than three times higher than on signal accuracy. The pattern of selection indicated that pollinators can select for signal accuracy provided by plants and suggests that learning abilities of pollinators can limit the evolution of deceptive strategies in T. ulmifolia.