J4 ›› 2016, Vol. 13 ›› Issue (1): 108-114.doi: 10.1016/S1672-6529(14)60164-5

• 论文 • 上一篇    下一篇

Investigation on the Lateral Line Systems of Two Cavefish: Sinocyclocheilus Macrophthalmus and S. Microphthalmus (Cypriniformes: Cyprinidae)

Yonggang Jiang1,2, Jianchao Fu1, Deyuan Zhang1, Yahui Zhao3   

  1. 1. School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China
    2. International Research Institute for Multidisciplinary Science, Beihang University, Beijing 100191, China
    3. Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
  • 收稿日期:2015-06-09 修回日期:2015-12-09 出版日期:2016-01-10 发布日期:2016-01-10
  • 通讯作者: Yonggang Jiang E-mail:jiangyg@buaa.edu.cn
  • 作者简介:Yonggang Jiang1,2, Jianchao Fu1, Deyuan Zhang1, Yahui Zhao3

Investigation on the Lateral Line Systems of Two Cavefish: Sinocyclocheilus Macrophthalmus and S. Microphthalmus (Cypriniformes: Cyprinidae)

Yonggang Jiang1,2, Jianchao Fu1, Deyuan Zhang1, Yahui Zhao3   

  1. 1. School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China
    2. International Research Institute for Multidisciplinary Science, Beihang University, Beijing 100191, China
    3. Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
  • Received:2015-06-09 Revised:2015-12-09 Online:2016-01-10 Published:2016-01-10
  • Contact: Yonggang Jiang E-mail:jiangyg@buaa.edu.cn
  • About author:Yonggang Jiang1,2, Jianchao Fu1, Deyuan Zhang1, Yahui Zhao3

摘要:

Cavefish, with sensitive lateral lines, can swim freely and locate preys in invisible and complex cave environments, though their eyes are greatly degenerated. Investigations on the morphology and distribution characteristics of their lateral line systems would benefit our understanding of the high-sensitivity mechanism of the fish. In this study, the arrangement and morphology of the lateral lines are described for two species of Sinocyclocheilus: S. macrophthalmus and S. microphthalmus, which live in the karst caves in Guangxi, China. The behavior experiments indicate that the lateral line system of the S. macrophthalmus is more sensitive at a low vibration frequency range from 20 Hz to 70 Hz. The cephalic and trunk lateral line systems both contribute to the efficient object-locating capability. For both of the two species of cavefish, the diameter of the lateral canal nearby the neuromasts is narrower than that nearby the canal pores. This variation can increase the normal pressure to the surface of the cupula, and increase the sensitivity of the canal lateral line system.

关键词: lateral line system, cavefish, neuromast, bionic sensing

Abstract:

Cavefish, with sensitive lateral lines, can swim freely and locate preys in invisible and complex cave environments, though their eyes are greatly degenerated. Investigations on the morphology and distribution characteristics of their lateral line systems would benefit our understanding of the high-sensitivity mechanism of the fish. In this study, the arrangement and morphology of the lateral lines are described for two species of Sinocyclocheilus: S. macrophthalmus and S. microphthalmus, which live in the karst caves in Guangxi, China. The behavior experiments indicate that the lateral line system of the S. macrophthalmus is more sensitive at a low vibration frequency range from 20 Hz to 70 Hz. The cephalic and trunk lateral line systems both contribute to the efficient object-locating capability. For both of the two species of cavefish, the diameter of the lateral canal nearby the neuromasts is narrower than that nearby the canal pores. This variation can increase the normal pressure to the surface of the cupula, and increase the sensitivity of the canal lateral line system.

Key words: lateral line system, cavefish, neuromast, bionic sensing