Exquisite structure of the lateral line system in eyeless cavefish Sinocyclocheilus tianlinensis contrast to eyed Sinocyclocheilus macrophthalmus(Cypriniformes:Cyprinidae)  

作　　者：Zhiqiang MA Hendrik HERZOG Yonggang JIANG Yahui ZHAO Deyuan ZHANG 

机构地区：[1]Institute of Bionic and Micro-Nano Systems,Beihang University,Beijing,China [2]Institute of Zoology,University of Bonn,Bonn,Germany [3]Key Laboratory of Zoological Systematics and Evolution,Institute of Zoology,Chinese Academy of Sciences,Beijing,China [4]Beijing Advanced Innovation Center for Biomedical Engineering,Beihang University,Beijing,China

出　　处：《Integrative Zoology》2020年第4期314-328,共15页整合动物学（英文版）

基　　金：the National Natural Science Foundation of China(grant nos.51575027,51975030 and 31972868);the Beijing Municipal Natural Science Foundation(No.3152017);the Academic Excellence Foundation of BUAA for PhD Students,and partly supported by the Fundamental Research Funds for the Central Universities.

摘　　要：In this study,the lateral line systems in Chinese cavefish eyeless Sinocyclocheilus tianlinensis and eyed Sinocyclocheilus macrophthalmus were investigated to reveal their morphological changes to survive in harsh environments.Compared with the eyed cavefish S.macrophthalmus(atypical),the lateral line system in the eyeless cave-fish S.tianlinensis(typical)has certain features to adapt to the dark cave environments:the superficial lateral line system in the eyeless species possesses a higher number of superficial neuromasts and more hair cells within an individual neuromast,and the trunk lateral line canal system in S.tianlinensis exhibits larger canal pores,higher canal diameter and more pronounced constrictions.Fluid–structure interaction analysis suggested that the trunk lateral line canal system in the eyeless S.tianlinensis should be more sensitive than that in the eyed S.macrophthalmus.These morphological features of the lateral line system in the eyeless S.tianlinensis probably enhance the functioning of the lateral line system and compensate for the lack of eyes.The revelation of the form–function relationship in the cavefish lateral line system provides inspiration for the design of sensitive artificial flow sensors.

关 键 词：CAVEFISH flow sensor form-function lateral line NEUROMAST 

分 类 号：Q95[生物学—动物学]