Journal of Chemical Ecology

, Volume 12, Issue 6, pp 1339–1347 | Cite as

Laser microbeam studies of role of amphid receptors in chemosensory behavior of nematodeCaenorhabditis elegans

  • Bowman O. DavisJr.
  • Marian Goode
  • David B. Dusenbery


Amphid sensilla, historically considered the primary chemosensory structures of nematodes, were found to be necessary for the detection of only one of the six chemical stimuli that were tested. Only the attraction to cAMP was eliminated by damaging the two lateral lips, which bear the amphid sensilla. The inner labial sensilla, one of which occurs on each of the six lips, are probably the primary receptor structures for the other chemical stimuli. Damaging all six lips, which should destroy all anterior chemosensory input, not only eliminted the attraction to sodium and chloride ions, but reversed the nematodes' response to them. Nematodes with all six lips destroyed showed reversal behavior when exposed to these attractants. Nematodes with damage to all six lips appeared to recover much of their normal chemosensory function within 24 hr after treatment.

Key Words

Caenorhabditis elegans nematode chemotaxis chemoreception amphid laser microbeam 


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Copyright information

© Plenum Publishing Corporation 1986

Authors and Affiliations

  • Bowman O. DavisJr.
    • 1
  • Marian Goode
    • 1
  • David B. Dusenbery
    • 1
  1. 1.School of Applied BiologyGeorgia Institute of TechnologyAtlanta

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