1. Department of Biology , Hallym University , Chunchon, 200, S‐Korea;2. Institut für Biologie I , Universit?t Tübingen , D7400, Tübingen, FRG
Abstract:
Abstract Azadirachtin shortens the period length of the locomotor activity rhythm in the circadian rhythm of Leucophaea maderae and induces splitting of this rhythm in two components in about 40% of the animals. The phase relationship between the two components is 180°. Both shortening of period and splitting are more pronounced in animals possessing longer periods before the injection of azadirachtin.