Tuning of photoreceptor function in three mantis shrimp species that inhabit a range of depths. II. Filter pigments
Tuning of photoreceptor function in three mantis shrimp species that inhabit a range of depths. II. Filter pigments
复制标题
DOI：
10.1007/s00359-002-0292-z
复制
发表时间：
2002-04-01
影响因子：
2.1
通讯作者：
Caldwell, RL
中科院分区：
文献类型：
--
作者：
Cronin, TW;Caldwell, RL
在单一物种的口足类甲壳动物，视觉色素类的同源光感受器在整个视网膜是相同的，在所有的个人，不随当地栖息地的光谱特性。我们研究了口足类光感受器的光谱灵敏度是否通过与特定受体类别相关的滤光片色素的变化进行差异调谐。所有类别的intrarhabdomal过滤器，其特征在于使用显微分光光度法在视网膜的三个口足类动物，Haptosquilla trispinosa，Gonodactylellus affinis，和Gonodaclopsis spongicola，比较个人的每一个物种从浅水或深水收集。取决于收集的深度，过滤器在光密度和光谱形状的个体之间的变化，观察到的变化是相似的，在所有三个物种。滤光器密度和光谱的变化增加了生活在更深处的动物视网膜的绝对灵敏度，并调整了它们的长波长光感受器，以改善深水中蓝光的功能。视网膜光谱功能的可塑性可能是共同的螳螂虾物种，占据了一系列的栖息地深度。
Within single species of stomatopod crustaceans, visual pigment classes of homologous photoreceptors throughout the retina are identical in all individuals and do not vary with the spectral characteristics of local habitats. We examined whether spectral sensitivities of stomatopod photoreceptors are differentially tuned through variations in the filter pigments associated with particular receptor classes. All classes of intrarhabdomal filters were characterized using microspectrophotometry in retinas of three stomatopod species, Haptosquilla trispinosa, Gonodactylellus affinis, and Gonodactylopsis spongicola, comparing individuals of each species collected from shallow or deep water. Depending on the depth of collection, filters varied among individuals both in optical density and in spectral shape, and the variation that was observed was similar in all three species. The changes in filter density and spectrum increased absolute sensitivity in retinas of animals living at greater depths, and tuned their long-wavelength photoreceptors for improved function in the bluer light available in deep water. Plasticity in retinal spectral function may be common in mantis shrimp species that occupy a range of habitat depths.