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    Article

    Circadiane Rhythmik und Regulation von Enzymen des Tryptophan-Stoffwechsels in Rattenleber und -niere

    1. The activity of tryptophan pyrrolase shows a monophasic circadian rhythm. The increase in activity is due to ...

    Rüdiger Hardeland in Zeitschrift für vergleichende Physiologie (1969)

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    Article

    Geschlechtsbedingte Unterschiede bei Tagesrhythmen von Insekten

    Sex-dependent differences in diuranl rhythms of insects concerning mainly phase and pattern are reviewed. As possible significant factors in the evolution of such differences are discussed: life span of the sp...

    Rüdiger Hardeland in Oecologia (1969)