Visual modelling supports the potential for prey detection by means of diurnal active photolocation in a small cryptobenthic fish
Visual modelling supports the potential for prey detection by means of diurnal active photolocation in a small cryptobenthic fish
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视觉模型支持通过小型隐底栖鱼类的昼夜主动光定位来检测猎物的潜力
DOI：
10.1038/s41598-019-44529-0
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发表时间：
2019
影响因子：
4.6
通讯作者：
Michiels N.K.
中科院分区：
文献类型：
--
作者：
Bitton P.-P;Christmann S.A.Y;Santon M;Harant U.K;Michiels N.K.
在使用回声定位和电定位的动物中，主动感知已经得到了很好的证明。主动光定位，或利用光的主动感知，受到的关注要少得多，而且只在生物发光的夜间物种中。然而，有证据表明，昼夜三鳍Triplefinon delasiuses控制虹膜辐射，称为眼火花，猎物检测。虽然这种形式的昼夜活跃的光定位行为描述，探索物理过程的研究将提供令人信服的支持，这一机制。在本文中，我们研究的条件下，昼夜活动的光定位可以帮助T。delaisiin检测潜在的猎物。在该领域，我们采样gammarids（genusCheirocratus），其特征在于他们的眼睛，具有很强的定向反射器的光谱特性。在实验室中，我们量化了眼睛火花的大小和它们的角度依赖性辐射。结合环境光测量和T. delaisi，我们模拟了各种情况下的昼夜活动光定位。我们的研究结果证实，昼夜活跃的光定位应该帮助T。delaisidest gammarids在觅食相关的距离，4.5厘米的有利条件下，平均条件下可达2.5厘米。为了确定昼夜活跃的微型猎物的光定位的患病率，我们鼓励进一步的理论和实证工作。
Active sensing has been well documented in animals that use echolocation and electrolocation. Active photolocation, or active sensing using light, has received much less attention, and only in bioluminescent nocturnal species. However, evidence has suggested the diurnal triplefinTripterygion delaisiuses controlled iris radiance, termed ocular sparks, for prey detection. While this form of diurnal active photolocation was behaviourally described, a study exploring the physical process would provide compelling support for this mechanism. In this paper, we investigate the conditions under which diurnal active photolocation could assistT. delaisiin detecting potential prey. In the field, we sampled gammarids (genusCheirocratus) and characterized the spectral properties of their eyes, which possess strong directional reflectors. In the laboratory, we quantified ocular sparks size and their angle-dependent radiance. Combined with environmental light measurements and known properties of the visual system ofT. delaisi, we modeled diurnal active photolocation under various scenarios. Our results corroborate that diurnal active photolocation should helpT. delaisidetect gammarids at distances relevant to foraging, 4.5 cm under favourable conditions and up to 2.5 cm under average conditions. To determine the prevalence of diurnal active photolocation for micro-prey, we encourage further theoretical and empirical work.
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影响因子：
3.3
作者：
Matz, MV;Marshall, NJ;Vorobyev, M
通讯作者：
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影响因子：
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作者：
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作者：
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