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Investigation of the chemosensory function of amphids of Syngamus trachea using electrophysiological techniques

Published online by Cambridge University Press:  06 April 2009

E. Riga
Affiliation:
Entomology and Nematology Department, IACR-Rothatnsted, Harpenden, Herts. AL5 2JQ Institute of Biological Sciences, University of Wales, Aberystwyth, Dyfed SY23 3D A
R. N. Perry
Affiliation:
Entomology and Nematology Department, IACR-Rothatnsted, Harpenden, Herts. AL5 2JQ
J. Barrett
Affiliation:
Institute of Biological Sciences, University of Wales, Aberystwyth, Dyfed SY23 3D A
M. R. L. Johnston
Affiliation:
Institute of Biological Sciences, University of Wales, Aberystwyth, Dyfed SY23 3D A

Summary

Syngamus trachea, the gape nematode, has been used as a model to study the chemosensory function of amphids. Extracellular electrophysiological recordings were performed directly on amphids. The amphids were stimulated by blood serum from a host bird and by D-tryptophan. The spike frequency produced by the amphid increased significantly after the application of the serum and the application of D-tryptophan. Two types of amphidial neurones responded to the presence of the stimuli. These extracellular recordings have verified the chemosensory function of the amphids.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1995

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