期刊
出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00359-023-01648-4
关键词
Photoperiodism; Time measurement; External and internal coincidence; Sarcophaga; Nasonia
This review presents some experimental evidence and two widely applicable photoperiodic clock models, external and internal coincidence. The experiments mainly used data from flesh flies (Sarcophaga spp) and the parasitic wasp, Nasonia vitripennis.
The identity and nature of the photoperiodic photoreceptors are now quite well known, as is the nature of the endocrine regulation of the resulting diapauses. The central problem of time measurement-how the photoperiodic clock differentiates long from short days-however, is still obscure, known only from whole-animal experiments and abstract models, although it is clearly a function of the insect circadian system. This review describes some of these experiments in terms of oscillator entrainment and two widely applicable photoperiodic clock models, external and internal coincidence, mainly using data from experiments on flesh flies (Sarcophaga spp) and the parasitic wasp, Nasonia vitripennis.
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