Acceleration of Paramecium swimming velocity is effected by various cations.
نویسندگان
چکیده
منابع مشابه
Directional change of ciliary beat effected with Mg2+ in Paramecium.
Two types of Triton X-100 extracted model of Paramecium caudatum were prepared and effects of the ionic compositions of the reactivating medium on the swimming behaviour of the extracted models were examined. Type I, prepared by the method of Naitoh and Keneko, did not change swimming direction depending on the concentrations of Mg2+ and K+ in the reactivating medium. Type II, prepared by a dif...
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Regulation of sodium and potassium by Paramecium was studied by measuring fluxes of Na and Rb respectively. Fluxes of these tracers had the following similarities. (1) Steady-state turnover showed approximately single-pool kinetics with 50% turnover in J h. (2) Efflux of both cations showed a specific exchange diffusion when the medium contained the corresponding non-radioactive cation. (3) The...
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In Paramecium, internal Ca(2+) concentration increase coupled to membrane depolarization induces a reversal in the direction of ciliary beating and, consequently, a reversal in swimming direction. The ciliary reversal (CR) duration is correlated to Ca(2+) influx, and the addition of drugs that block the Ca(2+) current leads to a reduction in the backward swimming duration. In this study we have...
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ژورنال
عنوان ژورنال: Cell Structure and Function
سال: 1983
ISSN: 0386-7196,1347-3700
DOI: 10.1247/csf.8.77