Kingo Tsumoto

Learn More
Changes in tetrodotoxin (TTX) content of the puffer fish Takifugu rubripes during seed production were examined. Two mature female puffer fish T. rubripes (samples 1 and 2) that contained TTX were used. The toxic eggs were artificially fertilized, and hatchlings were reared in an indoor tank for 50 days and then in a netcage at sea for an additional 48 or(More)
The effects of rearing temperature (23–29 °C) during the larval and juvenile stage on survival, growth and skeletal malformations in the seven-band grouper Epinephelus septemfasciatus were investigated. The survival rate of juveniles 30–40 mm in total length emerging from eggs was higher at 25 and 26 °C (0.1–1.3 %) than at 23 °C or 27–29 °C (0.004–1.5 %).(More)
For studying autonomous circadian rhythms of proteins in organisms, various mathematical models have been proposed. In this study, we have investigated bifurcations of periodic oscillations observed in circadian models incorporating the effect on a light-dark cycle and show that the waveform of the periodic variation in the light-induced parameter has a(More)
  • 1