多目涡虫眼点数目与体长的关系

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摘要:

淡水涡虫眼点结构简单,特别是多目涡虫,每个眼点仅有一个视神经细胞和一个色素细胞构成,是研究眼点起源和进化的好材料.本文以采自秦岭山脉和太行山脉的多目涡虫为研究材料,利用统计学方法探讨了多目涡虫眼点数目和体长以及海拔高度之间的关系,研究发现:多目涡虫体长与相应眼点个数呈显著正相关;同一山脉多目涡虫随着采集地海拔高度增加,相似体长的涡虫眼点数也相应增多.本研究以期为研究眼点的起源和进化提供基础资料.

The structure of the freshwater planarian eyespots is simple,especially the eye of Polycelis sp.,which is composed of a pigment cell and a photoreceptor cell.Planarians are becoming the suitable model system for studying the origin of eyespots and evolution.In this paper,the relationship among the eyespots number,the length of the Polycelis sp.and altitude was analyzed from Qinling Mountains and the Taihang Mountains by statistical methods.The results showed that there was a postive correlation between the body length and the eyespots number of Polycelis sp.;the eyespots number increases with the collecting elevation height increase of same mountains.This work provides basic data to elucidate the eye origins and development.

作者:

陈静董自梅李小艳司马应许晋楠方佳佳陈广文

机构地区:

Betway官方客服生命科学学院

出处:

《Betway官方客服学报：自然科学版》 CAS 北大核心 2015年第6期124-128,共5页

基金:

国家自然科学基金(31471965 31170357 30870368 30670247) 河南省重点科技攻关基金(112102210469) 河南省基础与前沿技术研究基金(122300410142 142300410160) 大学生创新项目(201410476066)

关键词:

秦岭多目涡虫眼点数体长海拔

Qinling Polycelis sp. eyespots number body length altitude

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