Influence of the Temperature of the Fluid Environment upon the Locomotion of Ascaris in the Glass Tube
Year: 1952
Type: article
Abstract: The period of the movement of ascaris was markedly influencedby changes in the temperature of the solution in which it was tested.If the temperature was raised, the period became shorter generally.It was also revealed that several abnormal movements and posturesof the worm took place in the glass tube filled with the solutionwhose temperature was raised as well as lowered gradually over awide range. Each of the postures differentiated from the original onewas shown in a certain range of the temperature which was changed.But, when the worm was exposed to a relatively high temperaturemaintained throughout the survival time, it showed the normal typeof the locomotion with a much longer period than that of the originalone, indicating less active in vitality, after it had gone throughseveral abnormal movements. The highest and lowest temperaturesof the solution in which few worms could hardly move were 50°Cand 20°C respectively. The time-interval from the beginning ofthe test until the worm ceased completely its movement, wasmeasured in the solution of various temperatures. As far as observedFig. 2. The time-interval from the beginningof the test the worm showed nospontaneous movement at various temperaturesof the solution.
Source: Proceedings of the Japan Academy
Institution: The University of Tokyo
Language: English
Subfield: Ecology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2192946506