在绿色剑尾 (Xiphophorus hellerii) 选择伴侣的过程中,随着时间的推移进行了比较评估
Kathryn Bullough1, Bram Kuijper1, Laura A Kelley1
1Centre for Ecology and Conservation, University of Exeter, Penryn TR10 9FE, United Kingdom.
概括
雌性绿色剑尾鱼 (Xiphophorus hellerii) 喜欢更大的雄性,无论同时或顺序呈现. 然而,当男性同时被视为男性时,偏好更强.
科学领域:
- 行为生态学 行为生态学
- 动物沟通动物沟通
- 性选择性选择性选择
背景情况:
- 伴侣选择实验通常假定对伴侣的同时评估.
- 在野外,动物可能会同时和连续地遇到伴侣.
- 了解介绍背景如何影响选择伴侣至关重要.
研究的目的:
- 调查雌性绿尾剑鱼对雄性大小的偏好是否在同时呈现和顺序呈现之间存在差异.
- 在这两种背景下探索伴侣比较背后的感知机制.
- 为了确定非线性偏好是否影响伴侣评估.
主要方法:
- 在绿色剑尾鱼 (Xiphophorus hellerii) 的同时与顺序呈现下,比较雌性对雄性尺寸的偏好.
- 在受控实验条件下评估女性对不同尺寸的男性的反应.
- 在不同的演示背景下分析女性的比较评估策略.
主要成果:
- 在同时和顺序条件下,雌性始终更喜欢更大的雄性.
- 男性的尺寸偏好在同步呈现时比顺序呈现时更强.
- 没有发现相对大小评估的证据;女性将当前信息与过去的经验进行了比较.
结论:
- 伴侣呈现的背景显著影响女性的偏好和评估策略.
- 女人的偏好是动态的,根据遇到的伴侣进行调整.
- 实验设计必须考虑生态有效性的自然伴侣遭遇场景.
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