光谱分析揭示红耳龟(Trachemys scripta)体色的两性异形

Spectra analysis reveals the sexual dichromatism of red-eared slider turtle(Trachemys scripta)

经光谱测量及构建可视化模型,该文表明红耳龟(Trachemys scripta)体色存在性二态,雌、雄体色的紫外光色调差异显著。体色光谱与身体质量的相关性分析表明,雄性前肢可见光色调与其质量显著相关,而雌性个体各测量部位体色光谱与身体质量均不存在相关性,提示红耳龟可能通过体色的紫外光色调差异来识别性别乃至个体差异。该研究结果有助于了解红耳龟的雌雄二态性和性选择行为。

In this study, spectra analysis was conducted to investigate the sexual dichromatism and relationship between body color and quality of the red-eared slider turtle （Trachernys scripta）. Visual modeling revealed that the differences of the hues of body colors＇ ultraviolet （UV） components between male and female were significant. Moreover, the visible （VIS） components of the hues of forelimbs were correlated with body qualities of male but not of female. Our results indicated that UV might act as a signal for sexual cognition in red-eared slider turtles, and female might evaluate male by the VIS components of the hues of forelimbs. These findings provided preliminary results and perspectives to the sexual dichromatism and sexual selection behaviors of red-eared slider turtles.