The existence of the palatal chemoreceptors responding specifically to dilute solutions of salts with monovalent cations was demonstrated in carp. The distilled water effect (a response produced by the application of distilled water after chemoreceptors had been rinsed out with hypertonic salt solutions) was assigned to the activity of the same receptor. Intensity of the response to dilute solutions of salts depended on the valency of the anion: the larger the valency, the greater the response. Positively charged sites of the receptor responsive to dilute salt solutions were suggested by previous treatments with acid and alkali, and dye salts. Increase in the ionic strength of the stimulating solution by the addition of supporting electrolytes caused a depression of response. In particular, strong depression of response was caused by the addition of a supporting electrolyte with a divalent cation. Effects of polarizing current on the chemoreceptor activity were investigated. Based upon the findings in this paper, a hypothesis is presented, which explains mechanisms underlying chemoreceptor responses to dilute solutions of electrolytes in terms of an interfacial electro-kinetic process.
Article|
July 01 1966
Fresh-water Fish Chemoreceptors Responsive to Dilute Solutions of Electrolytes
JIHEI KONISHI
JIHEI KONISHI
From the Laboratory of Physiology and Ecology, Faculty of Fisheries, Mie Prefectural University, Tsu, Japan
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JIHEI KONISHI
From the Laboratory of Physiology and Ecology, Faculty of Fisheries, Mie Prefectural University, Tsu, Japan
Received:
November 10 1965
Online ISSN: 1540-7748
Print ISSN: 0022-1295
© 1966 Chowdhury and Chanda
1966
J Gen Physiol (1966) 49 (6): 1241–1264.
Article history
Received:
November 10 1965
Citation
JIHEI KONISHI; Fresh-water Fish Chemoreceptors Responsive to Dilute Solutions of Electrolytes. J Gen Physiol 1 July 1966; 49 (6): 1241–1264. doi: https://doi.org/10.1085/jgp.0491241
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