与其他哺乳动物相比，回声定位蝙蝠听觉静纤毛长度的特征。

Characteristics of echolocating bats' auditory stereocilia length, compared with other mammals.

作者信息

Yao Qian, Zeng JinYao, Zheng YongMei, Latham Julia, Liang Bing, Jiang Lei, Zhang ShuYi

机构信息

Institute of Zoology, Chinese Academy of Sciences, Beijing 100080, China.

出版信息

Sci China C Life Sci. 2007 Aug;50(4):492-6. doi: 10.1007/s11427-007-0055-8.

DOI:10.1007/s11427-007-0055-8

PMID:17653670

Abstract

The stereocilia of the Organ of Corti in 4 different echolocating bats, Myotis adversus, Murina leucogaster, Nyctalus plancyi (Nyctalus velutinus), and Rhinolophus ferrumequinum were observed by using scanning electron microscopy (SEM). Stereocilia lengths were estimated for comparison with those of non-echolocating mammals. The specialized lengths of outer hair cells (OHC) stereocilia in echolocating bats were shorter than those of non-echolocating mammals. The specialized lengths of inner hair cells (IHC) stereocilia were longer than those of outer hair cells stereocilia in the Organ of Corti of echolocating bats. These characteristics of the auditory stereocilia length of echolocating bats represent the fine architecture of the electromotility process, helping to adapt to high frequency sound and echolocation.

摘要

利用扫描电子显微镜（SEM）观察了4种不同回声定位蝙蝠，即对抗鼠耳蝠、白腹管鼻蝠、绒山蝠（绒鼠耳蝠）和马铁菊头蝠的柯蒂氏器的静纤毛。估计了静纤毛的长度，以便与非回声定位哺乳动物的静纤毛长度进行比较。回声定位蝙蝠外毛细胞（OHC）静纤毛的特殊长度比非回声定位哺乳动物的短。在回声定位蝙蝠的柯蒂氏器中，内毛细胞（IHC）静纤毛的特殊长度比外毛细胞静纤毛的长。回声定位蝙蝠听觉静纤毛长度的这些特征代表了电运动过程的精细结构，有助于适应高频声音和回声定位。