当前位置: X-MOL 学术Behav. Ecol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
The role of boundary length and adjacent patch contrast in guppy mate choice
Behavioral Ecology ( IF 2.4 ) Pub Date : 2020-11-30 , DOI: 10.1093/beheco/araa097
Adélaïde Sibeaux 1 , Thomas Camduras 1 , John A Endler 1
Affiliation  

The presence of various combinations of adjacent colors within polymorphic species’ color pattern could have a major impact on mate choice. We studied the role of pattern geometry in predicting mate choice in guppies using boundary strength analysis (BSA). BSA estimates the visual contrast intensity between two adjacent color patches (ΔS) weighted by the lengths of the boundaries between these adjacent color patches. We measured both the chromatic (hue and saturation) and achromatic (luminance) ΔS for each pair of adjacent patches. For each male’s color pattern, we measured BSA as both mean (mΔS) and coefficient of variation (cvΔS) of all ΔS weighted by their corresponding boundary lengths. We also determined if specific color patch boundaries had an impact on female preferences and whether these predicted overall male contrast (mΔS). We found that males with a higher mΔS were more attractive to females and that six boundaries containing either fuzzy black or black as one of the pair colors significantly affected female preferences, indicating that 1) females favored highly conspicuous males and 2) melanin-based patches could be used as a signal amplifier, not only for orange but for other colors.

中文翻译:

边界长度和相邻斑块对比在孔雀鱼伴侣选择中的作用

多态性物种的颜色模式中相邻颜色的各种组合的存在可能会对配偶的选择产生重大影响。我们使用边界强度分析(BSA)研究了图案几何在预测孔雀鱼选择配偶中的作用。BSA估计两个相邻色标之间的视觉对比度强度(ΔS),这些视觉加权强度由这些相邻色标之间的边界长度加权。我们测量了每对相邻色块的色度(色相和饱和度)和消色差(亮度)ΔS。对于每位男性的颜色模式,我们将BSA均作为所有ΔS的平均值(mΔS)和变异系数(cvΔS)进行了测量由它们相应的边界长度加权。我们还确定了特定色块边界是否对女性喜好有影响,以及这些预测是否预测了总体男性对比(mΔS)。我们发现,具有较高mΔS的雄性对雌性更具吸引力,并且包含模糊黑色或黑色作为一对颜色之一的六个边界显着影响了雌性的偏好,表明1)雌性偏爱显眼的雄性和2)黑色素基色斑。可以用作信号放大器,不仅用于橙色,还可以用于其他颜色。
更新日期:2020-11-30
down
wechat
bug