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在Odontocetes中的物种间视网膜多样性和视神经解剖学

Michiel W E De Boeck¹, Bruno Cozzi², Jean-Marie Graïc²

¹Independent Researcher, 9000 Ghent, Belgium.

Animals : an open access journal from MDPI

|November 14, 2023

概括

鱼的视力显示了水生生物的独特适应性,与陆地物种有很大不同. 研究揭示了物种特异性的视神经,但与牛相比,鱼的视网膜质细胞较少.

科学领域:

比较解剖学和神经学的比较.
海洋哺乳动物的视力
眼部的适应性眼部的适应性

背景情况:

在水生环境中,Odontocete (牙) 的视力发生了显著的进化,影响了眼睛结构.
关键特征包括一个专门的虹膜,胸膜,视网膜质细胞和眼球形状.

研究的目的:

为了比较分析视神经和视网膜在各种odontocetes.
为了比较鱼的眼睛结构与半水生 (河马) 和陆生 (牛) 物种.

主要方法:

在组织截面上使用了组织学和免疫组织化学技术.
视神经形态和视网膜质细胞密度的比较分析.
检查神经纤维200和calretinin的表达.

主要成果:

在 odontocetes 和参考物种之间以及在类动物中观察到显著的差异.
视神经形态在很大程度上是特定于物种的.
陆地牛的视网膜质细胞密度高于类动物.
在一些鱼中缺少巨型质细胞和高视网膜厚度.
变性神经纤维200表达;卡莱丁宁只在瓶鼻海豚和牛中存在.

结论:

鱼的眼部解剖学表现出独特的适应性,但一些预期的特征,如巨型质细胞,并不普遍存在.
在水生哺乳动物和陆生哺乳动物之间,视网膜质细胞密度差异很大.
神经纤维和卡列丁因表达模式在视网膜细胞群体中提供了进一步的区别.

关键词:

牙科科牙科牙科科卡尔雷丁宁是一种卡尔雷丁宁.鱼类是鱼类的动物.神经纤维 200 200 年视神经的视觉神经是如何工作的视网膜视网膜视网膜是一个视网膜的质细胞细胞.

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