SYNCHRONIZATION BY LIGHT OF THE ERG CIRCADIAN-RHYTHM DURING ONTOGENY IN THE CRAYFISH

被引：11
作者：
FUENTESPARDO, B [1 ]
FANJULMOLES, ML [1 ]
MORENOSAENZ, E [1 ]
机构：
[1] NATL AUTONOMOUS UNIV MEXICO,FAC CIENCIAS,DEPT BIOL,MEXICO CITY 04510,DF,MEXICO
来源：
JOURNAL OF INTERDISCIPLINARY CYCLE RESEARCH | 1992年 / 23卷 / 02期
关键词：
ELECTRORETINOGRAM; CRAYFISH; ONTOGENY; CIRCADIAN RHYTHM; PHASE-RESPONSE CURVE;
D O I：
10.1080/09291019209360132
中图分类号：
R-3 [医学研究方法]; R3 [基础医学];
学科分类号：
1001 ;
摘要：
The present paper was aimed at establishing the time course for development of the light entrainment mechanism of the ERG. Chronic ERG recordings were obtained from juvenile crayfish during different stages of their ontogenetic development, by measuring (as a phase-response curve, PRC), the effect produced by single 15-min. light pulses on the period and phase of the ERG amplitude rhythm. It was found that the circadian rhythm of the ERG appears at relatively early stages of development (4th week after hatching) and that the entrainment mechanism developes after the crayfish has reached 2-5 months of age. The role played by the visual photoreceptors in the expression of the ERG rhythm as well as in its entrainment is discussed.
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页码：81 / 91
页数：11
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