Ultraviolet reflection enhances the risk of predation in a vertebrate
Ultraviolet reflection enhances the risk of predation in a vertebrate
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紫外线反射增加了脊椎动物被捕食的风险
DOI：
10.1093/czoolo/59.2.151
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发表时间：
2013
期刊：
影响因子：
2.2
通讯作者：
T. C. M.
中科院分区：
文献类型：
--
作者：
Modarressie;I. P. ;Bakker;T. C. M.
许多动物对紫外线敏感，并且在其体表上也具有紫外线反射区域。反射紫外线的个体已被证明在社交互动中更受青睐，例如择偶或浅滩决策。然而，这些身体的紫外线反射是否也会增强对紫外线敏感的捕食者的显眼性，从而导致其携带者付出代价，目前尚不清楚。将两只大小匹配的三刺刺鱼Gasterosteus aculeatus，一只封闭在紫外线透射（UV+）室中，另一只封闭在紫外线阻挡（UV-）室中，同时将其呈现给个体褐鳟Salmo trutta。 “一岁鸽”。这个年龄的褐鳟鱼对电磁波谱的紫外线部分很敏感，是三刺鱼的天敌。记录最先受到攻击的刺鱼以及随后的攻击次数。与封闭在紫外线阻挡室中的刺鱼相比，封闭在紫外线透射室中的刺鱼首先受到攻击的频率明显更高。使用中性密度滤光片的对照实验表明，这更可能是由于紫外线影响色调感知而不是亮度辨别。攻击概率的差异对应于刺鱼与在鳟鱼色觉生理模型中的 UV+ 和 UV 条件下计算的实验背景之间的色彩对比度差异。由于猎物的显眼程度增加，紫外线反射似乎增加了被捕食的风险，因此代价高昂。据我们所知，这是第一项针对脊椎动物的研究，证明了紫外线波长造成的直接捕食风险。
Many animals are sensitive to ultraviolet light and also possess UV-reflective regions on their body surface. Individuals reflecting UV have been shown to be preferred during social interactions such as mate choice or shoaling decisions. However, whether those body UV-reflections enhance also the conspicuousness to UV-sensitive predators and therefore entail costs for its bearer is less well documented. Two size-matched three-spined sticklebacksGasterosteus aculeatus, one enclosed in a UV-transmitting (UV+) and another in a UV-blocking (UV-) chamber, were simultaneously presented to individual brown troutSalmo trutta. “yearlings”. Brown trout of this age are sensitive to the UV part of the electromagnetic spectrum and are natural predators of three-spined sticklebacks. The stickleback that was attacked first as well as the subsequent number of attacks was recorded. Sticklebacks enclosed in the UV-transmitting chamber were attacked first significantly more often compared to sticklebacks enclosed in the UV-blocking chamber. Control experiments using neutral density filters revealed that this was more likely due to UV having an influence on hue perception rather than brightness discrimination. The difference in attack probability corresponded to the difference in chromatic contrasts between sticklebacks and the experimental background calculated for both the UV+ and UVconditions in a physiological model of trout colour vision. UV reflections seem to be costly by enhancing the risk of predation due to an increased conspicuousness of prey. This is the first study in a vertebrate, to our knowledge, demonstrating direct predation risk due to UV wavelengths.
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影响因子：
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DOI：
--
发表时间：
2004
期刊：
影响因子：
--
作者：
I. P. Rick;T. Bakker;Ricarda Modarressie
通讯作者：
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