Positive-to-negative behavioural responses suggest hedonic evaluation in treefrog mate choice

Positive-to-negative behavioural responses suggest hedonic evaluation in treefrog mate choice
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积极到消极的行为反应表明树蛙择偶时的享乐评估

DOI:
10.1098/rspb.2021.1822
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发表时间:
2022
期刊:
Proceedings of the Royal Society B: Biological Sciences
影响因子:
--
通讯作者:
Rodríguez, Rafael L.
Rodríguez, Rafael L.
中科院分区:
--
文献类型:
--
作者:
Höbel, Gerlinde;Rodríguez, Rafael L.

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性竞争取决于吸引或赶走同类的能力。在这种情况下,选择性环境可能是享乐性的或情感性的,因为它由做出决定的个人的评估组成。这可能有助于性选择的力量,因为评价可能从积极到消极,而不仅仅是从积极到中性。因此,由于配偶选择的选择可能比目前所认识的更强。此外,偏好配偶类型的变化可以简单地通过对相似展示特征的评估的变化(翻转)来发生,增加了性选择的动力及其力量。我们测试的假设,积极到消极的行为反应,在择偶与播放实验中使用两个树蛙物种的“镜像”结构,在他们的广告和侵略性的电话。雌性树蛙的反应范围从接近到逃避,并且厌恶刺激的存在污染了对有吸引力刺激的评价。此外,女性在这两个物种中表现出翻转的方法/逃避刺激具有可比的信号结构。这些结果表明,享乐评价可能有一个重要的作用,在配偶选择和展示如何机械分析可以帮助理解进化过程。
Sexual competition hinges on the ability to impress other conspecifics, to drive them away or attract them. In such cases, the selective environment may be hedonic or affective in nature, as it consists of the evaluations of the individuals making the decisions. This may contribute to the power of sexual selection because evaluations may range from positive to negative rather than simply from positive to neutral. Selection due to mate choice may therefore be stronger than currently appreciated. Further, change in preferred mate types can occur simply by changes (flips) in the evaluation of similar display features, adding to the dynamism of sexual selection as well as its strength. We tested the hypothesis of positive-to-negative behavioural responses in mate choice with a playback experiment using two treefrog species with ‘mirror image’ structures in their advertisement and aggressive calls. Female treefrog responses ranged from approach to evasion, and the presence of an aversive stimulus tainted evaluation of an attractive stimulus. Further, females in the two species showed flips in approach/evasion of stimuli with comparable signal structure. These results suggest that hedonic evaluation may have an important role in mate choice and showcase how mechanistic analysis can help understand evolutionary processes.
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