• Journal of the Korean Society of Visualization
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• v.13 no.2
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• pp.22-27
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• 2015

Caenorhabditis elegans (C.elegans) has various interesting behavioral properties, such as chemotaxis, thermotaxis, and electrotaxis. However, most previous research were only focused on single-stimulus for studying its behavioral properties. In this paper, we propose a simple and effective device for analyzing the behavior of C.elegans with combined stimuli, electric field and temperature. We compared and analyzed wild type worms (N2) and four mutant worms (tax-4, ttx-7, unc-54, unc-6). We analyzed the reaction of worms to certain stimulus and identified that this device is effective to apply a combined stimulus.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.21 no.1
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• pp.19-27
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• 1985

It is important to minimize the electric power consumption to stimulate the marine fish, for the much electric power consumption is required to induce the response. The experiment was made to find out the threshold value for the electrotaxis or electronarcosis on amber fish, Seriola aureovitta(TEMMINCK et SCHLEGEL). The impulse rate and width which minimize the electric power consumption were examined. The experiment was carried out in the acryl tank(49W$\times$175L$\times$50Hcm) which is equipped with the two electrodes. The results obtained are as follows: 1) The electric power consumption which is required to induce the electorates and electronarcosis is tended to decrease as the lower impulse rate. 2) The mean electric power consumption for the electronarcosis is about 4.5~10 times of the electrotaxis. 3) The impulse width which minimize the electric power consumption is 0.5msec.