The influence of viscous hydrodynamics on the fish lateral-line system

Shane P. Windsor*, Matthew J. McHenry

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)

25 Citations (Scopus)

Abstract

Fish exhibit many behaviors that involve sensing water flows with their lateral-line system. In many situations, viscosity affects how the flow interacts with the body of the fish and the neuromasts of the lateral line. Here we discuss how viscosity influences the stimulus to the fish lateral-line system. The movement of a fish's body creates flows that can interfere with the detection of external signals, but these flows can also serve as a source of information about nearby obstacles and the fish's own hydrodynamic performance. The viscous boundary layer on the surface of the skin alters external signals by attenuating the low-frequency components of stimuli. The stimulus to each neuromast depends on the interaction of the fluid surrounding the neuromast and the structural properties of that neuromast, including the number of mechanosensory hair cells it contains. A consideration of the influences of viscosity on flow, at both the whole-body and receptor levels, offers the promise of a more comprehensive understanding of the signals involved in behaviors mediated by the lateral-line system.

Original languageEnglish
Pages (from-to)691-701
Number of pages11
JournalIntegrative and Comparative Biology
Volume49
Issue number6
DOIs
Publication statusPublished - Dec 2009
EventSymposium on Genomics and Vertebrate Adaptive Radiation held at the Society-of-Integrative-and-Comparative-Biology Annual Meeting - Boston, Morocco
Duration: 9 Jan 2009 → …

Keywords

  • MEXICAN CAVE FISH
  • NERVE-FIBERS
  • BOUNDARY-LAYER
  • DIPOLE SOURCE LOCALIZATION
  • MICHIGAN MOTTLED SCULPIN
  • ASTYANAX-FASCIATUS
  • SENSORY BASIS
  • CANAL NEUROMASTS
  • SWIMMING FISH
  • EXCITATION PATTERNS

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