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首页> 外文期刊>Ethology >Characterisation of predator-directed displays in tephritid flies.
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Characterisation of predator-directed displays in tephritid flies.

机译：特发性蝇中以捕食者为导向的展示的特征。

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摘要

Flies of the family Tephritidae are known to perform a display in front of their salticid spider predators. This display involves extending the wings while the fly moves from side to side. The wings of many of fly species are banded, and in some species, these bands are thought to deter their predators by mimicking the leg patterns of salticids. However, as this display is also seen in non-mimicking flies, there is some uncertainty over the functional significance of these displays. In this study, we explored the efficacy of displays by the lightly banded but non-mimicking Mexican fruit fly (Anastrepha ludens) in deterring attacks by the salticids Paraphidippus aurantius and Phidippus bidentatus. We tested the effect of band visibility and the fly's physiological condition on the production of these displays and the probability of attack by salticids. We filmed the interactions of flies and spiders and analysed fly displays in the presence of the salticid. We show that the fly's display deters salticids and promotes the fly's chances of survival and that the presence or absence of bands does not alter the possibility of attack. Flies fed on different quality diets showed similar rates of display. Our results suggest that tephritid flies deter attacks because of their display and not their appearance.
机译：已知蝇科的苍蝇在它们的含盐蜘蛛捕食者面前表演。这种显示包括在苍蝇从一侧移到另一侧时伸展机翼。许多蝇类的翅膀呈带状，在某些物种中，这些带被认为通过模仿盐飞虱的腿部形态来阻止它们的天敌。但是，由于这种显示方式也可以在非模仿性苍蝇中看到，因此这些显示功能的重要性尚不确定。在这项研究中，我们探索了浅条但不模仿墨西哥果蝇（Anastrepha ludens）的展示效果，以阻止由盐生的Paraphidippus aurantius和Phidippus bidentatus引起的攻击。我们测试了条带可见性和果蝇的生理状况对这些显示器产生的影响以及盐菌侵袭的可能性。我们拍摄了苍蝇和蜘蛛的相互作用，并分析了在有盐菌存在下的苍蝇展示。我们表明，苍蝇的展示能阻止盐渍病，并提高苍蝇的生存机会，而且带子的存在或不存在都不会改变攻击的可能性。用不同质量的饮食喂养的苍蝇显示出相似的显示率。我们的结果表明，特发性飞蝇能够阻止攻击，因为它们的展示方式而不是外观。

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