Takane Isoda

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Diet-switch experiments with three different species of microalgae were conducted to estimate diet-tissue isotopic fractionation of carbon (C) and nitrogen (N) isotopes in the freshwater clam Corbicula sandai. The δ13C and δ15N values in the soft tissues of C. sandai changed in each experiment, with little inter-individual deviations, thereby reflecting the(More)
The sex ratios of the nigorobuna Carassius auratus grandoculis reared in paddy fields during the sex differentiation periods of larval and juvenile stages were examined, since the phenotypic expression of sex in the fish is thermolabile, so that sex determination is under the control of genetic factors and temperature. After 2 days from hatching, the larvae(More)
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