Locomotor Activity Rhythm in Four Wrasse Species under Varying Light Conditions

@article{Nishi1990LocomotorAR,
  title={Locomotor Activity Rhythm in Four Wrasse Species under Varying Light Conditions},
  author={G. Nishi},
  journal={Japanese Journal of Ichthyology},
  year={1990},
  volume={37},
  pages={170-181}
}
  • G. Nishi
  • Published 1990
  • Biology
  • Japanese Journal of Ichthyology
(Suezichthys gracilis, Thalassoma cupido, Labroides dimidiatus and Cirrhilabrus temminckii) were individually examined using an actograph with infra-red photo-electric switches in a dark room at temperatures of 21.3-24.3•Ž, for 7 to 14 days. The locomotor activity of S. gracilis occurred mostly during the light period under a light-dark cycle regimen (LD 12:12; 06:00-18:00 light , 18:00-06:00 dark). The locomotor activity commenced at the beginning of the light period and continued until a… Expand
Effects of photic environment on ocular melatonin contents in a labrid teleost, the wrasse Halichoeres tenuispinnis.
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The results indicate that the ocular melatonin rhythm in the wrasse is driven both by the photic environment and by a circadian clock, and that the wrasses that buries itself in the bottom sand can perceive low intensity of light. Expand
Circadian Rhythms of Locomotor Activity in the Nile Tilapia Oreochromis niloticus
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Results suggest the existence of an endogenous circadian oscillator that controls the expression of locomotor activity rhythms in the Nile tilapia, although its anatomical localization remains unknown. Expand
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Plasticity of diel and circadian activity rhythms in fishes
  • S. G. Reebs
  • Biology
  • Reviews in Fish Biology and Fisheries
  • 2004
TLDR
It is argued that most fish species have a circadian system but that havingsuch a system does not necessarily imply strict diurnalism or nocturnalism, and that Rigidity ofactivity phase seems more common in species that display behavioral sleep. Expand
Apparent semi-lunar spawning rhythmicity in a brackish cardinalfish
TLDR
Results suggest that with the 1 month ovarian development process, A. amboinensis exhibits a semi-lunar spawning pattern with peaks around the first and last quarter moon. Expand
Role of the Tidal Cycle in the Gonadal Development and Spawning of the Tropical Wrasse Halichoeres trimaculatus
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