紫外线诱导的荧光平衡:雌性装饰跳蛛的配偶选择和捕食风险。

IF 3.7 1区 生物学 Q1 ZOOLOGY
Yingna Zhou, Long Yu, Xiaoyan Wang, Daiqin Li, Xin Xu
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引用次数: 0

摘要

雌性纹饰的适应性意义仍然是进化生物学中的一个核心问题,紫外线(UV)诱导的荧光成为一个关键的兴趣领域。本研究以两种华丽跳蛛Phintella vittata和Ph. bifurcilinea为研究对象,探讨了雌性特异性紫外线诱导荧光在雄性择偶和捕食风险方面的潜在适应优势。在这些物种中,成年雌性的触膜表现出紫外线诱导的荧光,为探索性别和自然选择对雌性装饰的相互作用提供了一个令人信服的模型。在雄性配偶选择试验中,雄性被要求在荧光(F+,可见紫外线)和非荧光(F-,阻挡紫外线)雌性之间做出选择。雄性对F+雌性的择偶偏好明显高于F-雌性,也就是说,雄性花更多的时间与F+雌性互动,这表明荧光是一种性选择信号。为了评估荧光的潜在成本,我们在F+和F-条件下,以食蜘蛛跳蛛Portia xishan为捕食者,测试了荧光对捕食风险的影响。F+雌虫的捕食率明显高于F-雌虫,这表明紫外线诱导的荧光增强了捕食者的可探测性。这些发现提供了一种权衡的经验证据:虽然荧光增强了雄性对配偶的偏好,但它也增加了被捕食的风险。这项研究首次证明了荧光在雌性跳蛛的性信号和捕食中的双重作用,挑战了传统的以雄性为中心的择偶观点。通过整合行为学和生态学的方法,这项工作为与女性性选择特征相关的进化权衡提供了新的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
UV-Induced Fluorescence in the Balance: Mate Choice and Predation Risk in the Female Ornamented Jumping Spiders.

The adaptive significance of female ornamentation remains a central question in evolutionary biology, with ultraviolet (UV)-induced fluorescence emerging as a key area of interest. This study investigates the potential adaptive advantages of female-specific UV-induced fluorescence in male mate choice and predation risk, as fitness costs, using two species of ornate jumping spiders Phintella vittata and Ph. bifurcilinea. In these species, the palps of adult females exhibit UV-induced fluorescence, offering a compelling model to explore the interplay of sexual and natural selection acting on female ornamentation. In male mate-choice trials, males were presented with a choice between a fluorescent (F+, UV-visible) and a non-fluorescent (F-, UV-blocked) female. Males showed pronounced mate preference for F+ females over F- females, that is, spending significantly more time interacting with F+ females, suggesting that fluorescence serves as a sexually selected signal. To assess the potential costs of fluorescence, we tested its effect on predation risk using the spider-eating jumping spider Portia xishan as a predator under F+ and F- conditions. Predation rates were significantly higher for F+ females than for F- females, indicating that UV-induced fluorescence increases detectability by predators. These findings provide empirical evidence of a trade-off: While fluorescence enhances male mate preference, it also increases predation risk. This study is the first to demonstrate the dual roles of fluorescence in sexual signaling and predation in female jumping spiders, challenging traditional male-centric perspectives on mate choice. By integrating behavioral and ecological approaches, this work offers new insights into the evolutionary trade-offs associated with female sexually selected traits.

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来源期刊
CiteScore
6.40
自引率
12.10%
发文量
81
审稿时长
>12 weeks
期刊介绍: The official journal of the International Society of Zoological Sciences focuses on zoology as an integrative discipline encompassing all aspects of animal life. It presents a broader perspective of many levels of zoological inquiry, both spatial and temporal, and encourages cooperation between zoology and other disciplines including, but not limited to, physics, computer science, social science, ethics, teaching, paleontology, molecular biology, physiology, behavior, ecology and the built environment. It also looks at the animal-human interaction through exploring animal-plant interactions, microbe/pathogen effects and global changes on the environment and human society. Integrative topics of greatest interest to INZ include: (1) Animals & climate change (2) Animals & pollution (3) Animals & infectious diseases (4) Animals & biological invasions (5) Animal-plant interactions (6) Zoogeography & paleontology (7) Neurons, genes & behavior (8) Molecular ecology & evolution (9) Physiological adaptations
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