Evolutionary aspects on the construction of the first optic neuropil (lamina) in Crustacea
Evolutionary aspects on the construction of the first optic neuropil (lamina) in Crustacea
复制标题
甲壳动物第一个视神经纤维（层）结构的进化方面
作者：
R. Elofsson;Mariana Hagberg
摘要高尔基体对三种有吻纲物种第一视神经纤维（椎板）神经元形态的研究揭示了椎板结构和神经元类型的密切相似性。高尔基方法揭示的十足目和糠虾甲壳类物种的层结构符合先前的研究，并且与趾甲类不同。比较是在分辨率水平上进行的，包括视网膜在椎板上的投影、结构实体（例如柱和层）以及神经元位置、分支模式和末端区域。结果表明，不同类型的复眼和动物栖息地的变化对于叶片设计的重要性不如当前分类群中表达的共同血统。
SummaryA Golgi study of the neuronal morphology of the first optic neuropil (lamina) in three anostracan species revealed a close similarity in the lamina construction and neuron types. The lamina architecture of decapod and mysid crustacean species, as revealed by the Golgi method, conformed to previous studies and differed from the anostracans. The comparison was made at the level of resolution comprising retinal projection on the lamina, structural entities such as columns and layers and neuron position, branching pattern and terminal fields. It was shown that different types of compound eyes and variation in the habitat of the animals were of less importance for the lamina design than common descent as expressed in the present taxonomic groups.