Inaccurate color discrimination by pollinators promotes evolution of discrete color polymorphism in food-deceptive flowers
Inaccurate color discrimination by pollinators promotes evolution of discrete color polymorphism in food-deceptive flowers
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传粉者不准确的颜色辨别促进了食物欺骗性花朵中离散颜色多态性的进化
DOI：
10.1086/684433
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Gaku Takimoto
中科院分区：
文献类型：
--
作者：
Kotaro Kagawa;Gaku Takimoto
许多采用食物欺骗性授粉策略的植物物种在其种群内表现出离散或连续的花部多态性。以往的研究表明，传粉昆虫学习行为引起的负频率依赖选择（NFDS）是维持花部多态性的主要原因。然而，NFDS本身并不能解释为什么以及何时离散或连续多态性进化。在这项研究中，我们使用一个进化模拟模型，提出不准确的歧视花的颜色授粉的结果在离散的花色多态性的进化。模拟结果表明，基于传粉者不准确识别的联想学习导致了对花色的破坏性选择。不准确的程度决定了进化出的离散花色的数量。我们的研究结果表明，动物行为的基础上不准确的歧视可能是破坏性选择，促进离散性状多态性的一般原因。
Many plant species employing a food-deceptive pollination strategy show discrete or continuous floral polymorphism within their populations. Previous studies have suggested that negative frequency-dependent selection (NFDS) caused by the learning behavior of pollinators was responsible for the maintenance of floral polymorphism. However, NFDS alone does not explain why and when discrete or continuous polymorphism evolves. In this study, we use an evolutionary simulation model to propose that inaccurate discrimination of flower colors by pollinators results in evolution of discrete flower color polymorphism. Simulations showed that associative learning based on inaccurate discrimination in pollinators caused disruptive selection of flower colors. The degree of inaccuracy determined the number of discrete flower colors that evolved. Our results suggest that animal behavior based on inaccurate discrimination may be a general cause of disruptive selection that promotes discrete trait polymorphism.