Vanlalnghaka C, Keny V L, Satralkar M K, Khare P V, Pujari P D, Joshi D S
Zoology Department, Ahmednagar College, Ahmednagar, India.
Chronobiol Int. 2005;22(5):793-800. doi: 10.1080/07420520500263094.
Phase-response curves (PRCs) for the circadian rhythm of flight activity of the microchiropteran bat (Hipposideros speoris) were determined in a cave, employing discrete natural dawn and dusk twilight pulses. These PRCs are reported for the first time for any circadian system and they are unlike other PRCs constructed for nocturnal mammals. Dawn and dusk twilight pulses evoked advance and delay phase shifts, respectively. Advance phase shifts were followed by 3 to 4 advancing transients and a subsequent shortening of free-running period (tau); whereas, the delay phase shifts were instantaneous without any transients but with a subsequent lengthening of tau.
利用离散的自然黎明和黄昏微光脉冲，在一个洞穴中测定了小型食虫蝙蝠（大蹄蝠）飞行活动昼夜节律的相位响应曲线（PRC）。这些PRC是首次在任何昼夜节律系统中报道，并且它们与为夜行性哺乳动物构建的其他PRC不同。黎明和黄昏微光脉冲分别引起提前和延迟相位偏移。提前相位偏移之后是3到4个提前的瞬变以及随后自由运行周期（tau）的缩短；而延迟相位偏移是即时的，没有任何瞬变，但随后tau会延长。
