...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Anatomy >Retinal ganglion cell topography and spatial resolution estimation in the Japanese tree frog Hyla japonica Hyla japonica (Günther, 1859)
【24h】

Retinal ganglion cell topography and spatial resolution estimation in the Japanese tree frog Hyla japonica Hyla japonica (Günther, 1859)

机译：视网膜神经节细胞形貌和日本林蛙河谷河谷粳稻的空间分辨率估计（Günther，1859）

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Abstract Tree frogs are an interesting and diverse group of frogs. They display a number of unique adaptations to life in the arboreal environment. Vision plays a crucial role in their ecology. The topography of retinal ganglion cells ( GC s) is closely related to a species’ visual behavior. Despite a large amount of research addressing GC topography in vertebrates, there is scarce data on this subject in tree frogs. I studied the topography of GC s in the retina of the Japanese tree frog Hyla japonica . The GC density distribution was locally fairly homogeneous, with spatial density increasing gradually from the dorsal and ventral periphery towards the equator. A moderately pronounced visual streak was found close to the equator in the dorsal hemiretina, with a distinct area retinae temporalis in the dorsotemporal quadrant potentially subserving binocular vision. The minimum GC density (mean ± SEM , n ?=?5) was 3060?±?60 and the maximum 12?800?±?170 cells/mm 2 . The total number of GC s was 292?±?7?×?10 3 . The theoretical anatomical spatial resolution estimated from GC densities and eye optics was lowest in the ventral periphery ( ca . 0.9 and 1.3 cycles/degree in air and water, respectively) and highest in the area retinae temporalis ( ca . 2.1 and 2.8?cycles/degree). The relatively high GC density and presence of specialized retinal regions in Hyla japonica are consistent with its highly visual behavior. The present findings contribute to our understanding of the relative role of common ancestry and environmental pressure in GC topography variation within Anura.
机译：抽象的树蛙是一个有趣和不同的青蛙。它们在树栖环境中显示了许多对生活的独特适应性。愿景在生态学中起着至关重要的作用。视网膜神经节细胞（GC S）的形貌与物种的视觉行为密切相关。尽管在脊椎动物中解决了GC地形的大量研究，但在Tree Frogs中有稀缺数据。我研究了GC S的地形在日本林蛙Hyla japonica的视网膜中。 GC密度分布局部相当均匀，空间密度从背部和腹侧周边朝向赤道逐渐增加。发现了一个适度明显的视觉条纹，靠近背侧血管内的赤道，在潜在的象限潜在植入双目视觉中具有明显的视网膜临床。最小GC密度（平均值±SEM，N？5）为3060？±60和最大12？800？±170个单元/ mm 2。 GC S的总数为292？±7？×10 3。从GC密度和眼镜眼估计的理论解剖空间分辨率在腹侧周边（CA.0.9和1.3循环/度分别在空气和水中，分别为0.9和1.3周期）和地区视网膜临床颞下（CA.2.1和2.8？循环/程度）。 Hyla japonica中的相对较高的GC密度和特异性视网膜区域的存在与其高度视觉行为一致。本研究结果有助于了解常见的祖先和环境压力在ANura内的GC地形变异中的相对作用。

著录项

相似文献

  • 外文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号