A dual pacemaker model for the circadian system of the insectHemideina thoracica
作者:
R.D. Lewis,
A.G. Bullivant,
V.M. King,
期刊:
Journal of Interdisciplinary Cycle Research
(Taylor Available online 1991)
卷期:
Volume 22,
issue 4
页码: 293-309
ISSN:0022-1945
年代: 1991
DOI:10.1080/09291019109360114
出版商: Taylor & Francis Group
关键词: Circadian rhythm;Hemideina thoracica;pacemaker;model
数据来源: Taylor
摘要:
A dual pacemaker model is described which accounts for the variety of types of free‐run lability evident in the locomotor rhythms of the insectHemideina thoracica(Orthoptera: Stenopelmatidae). The model pacemakers, each comprising a linked population of circadian feedback oscillators, interact through unequal mutual coupling. One pacemaker (Y) directly controls the timing of locomotor activity, and the other (X) regulates other rhythms, such as the daily rhythm of cuticle deposition. The evidence on which the model is based includes spontaneous change in period, compression and decompression of active phases (scalloping), rhythm splitting, “day skipping”; and arrhythmicity. The simulations of free‐running activity mirror a number of features of the real data, and hence lend support to this model.
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