THE EFFECTS OF TEMPERATURE AND SALINITY CHANGE ON SWIMMING RATE IN THE DINOFLAGELLATES, GONYAULAX AND GYRODINIUM

Abstract

1. Apparatus is described with which it is possible to make rapid measurements of linear velocity and rate of change of direction in the motile microorganism.2. Observations on the relation between linear velocity and salinity have been made in the dinoflagellates, Gonyaulax and Gyrodinium.3. Data are also presented on the relation of linear velocity to temperature in the two forms.4. Results are discussed in relation to the ecology of the organisms.