Support for a role of colour vision in mate choice in the nocturnal European treefrog (Hyla arborea)
Support for a role of colour vision in mate choice in the nocturnal European treefrog (Hyla arborea)
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DOI：
10.1163/000579510x534227
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发表时间：
2010-12-01
期刊：
影响因子：
1.3
通讯作者：
Thery, Marc
中科院分区：
文献类型：
--
作者：
Gomez, Doris;Richardson, Christina;Thery, Marc
虽然夜行无尾类动物利用视觉进行生殖交流，但它们在夜间是否能看到颜色仍不清楚。在这里，我们探讨了这个问题，在欧洲树蛙（Hyla arborea），在受控的光照条件下进行两个交配选择实验。实验涉及静态的男性模型相同的电话，但不同的声囊着色相结合的彩色（红/橙子）和亮度（暗/光）的信息。我们发现，女性更喜欢暗红色的光橙子，首次证明了视觉引导的配偶选择在夜间漫射光条件。相反，女性没有区分深橙子和浅红色。在第一个实验中，女性对黑暗的偏好超过了光明，而在第二个实验中却没有，这表明女性不仅可以获得亮度线索，还可以获得色彩线索。没有偏好可能源于女性随机选择的情况下，颜色和亮度的线索可能会传达矛盾的信息男性质量或从个人异质性的类型的线索用于择偶。总的来说，这些实验为夜间两栖动物使用色觉提供了第一个支持。
Although nocturnal anurans use vision for reproductive communication, it remains unknown whether they see colours at night. Here, we explored this question in the European treefrog (Hyla arborea), by conducting two mate choice experiments under controlled light conditions. Experiments involved static male models with identical calls but different vocal sac colouration combining chromatic (red/orange) and brightness (dark/light) information. We found that females preferred dark red over light orange, evidencing for the first time a visually-guided mate choice in nocturnal diffuse light conditions. Conversely, females did not discriminate between dark orange and light red. The preference for dark over light in the first but not in the second experiment suggested that females had not only access to brightness cues but also to chromatic cues. The absence of preference may originate from females choosing at random in a situation where colour and brightness cues may convey contradictory information about male quality or from individual heterogeneity in the type of cues used for mate choice. Overall, these experiments provide the first support for the use of colour vision in a nocturnal amphibian.