Foraging costs drive female resistance to a sensory trap
Foraging costs drive female resistance to a sensory trap
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觅食成本导致雌性对感官陷阱的抵抗
DOI：
10.1098/rspb.2011.2611
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Y. S. Lemus
中科院分区：
文献类型：
--
作者：
C. M. Garcia;Y. S. Lemus
男性的装饰品可以通过利用女性的感知偏见来进化，比如对食物线索的反应。这种类型的感官开发可能会导致雄性信号和雌性用来寻找/识别食物的线索之间的混淆。这种干扰对雌性来说代价高昂，这可能是雌性进化出对雄性装饰品的抵抗力的原因之一。我们使用一组已经进化出对感觉陷阱的抵抗力的胎生鱼类，证明暴露在类似食物的装饰物下的雌性觅食效率降低，当觅食与装饰物共享视觉属性的食物时，这种影响很明显，并且并非所有物种都受到这种混乱的影响。我们的研究结果支持通过追逐性冲突的观赏性进化模型。
Male ornaments can evolve through the exploitation of female perceptual biases such as those involved in responding to cues from food. This type of sensory exploitation may lead to confusion between the male signals and the cues that females use to find/recognize food. Such interference would be costly to females and may be one reason why females evolve resistance to the male ornaments. Using a group of species of viviparous fish where resistance to a sensory trap has evolved, we demonstrate that females exposed to an ornament that resembles food have a diminished foraging efficiency, that this effect is apparent when foraging on a food item with which the ornament shares visual attributes, and that not all species are equally affected by such confusion. Our results lend support to the model of ornamental evolution through chase-away sexual conflict.