Light and temperature cycles as zeitgebers of zebrafish (Danio rerio) circadian activity rhythms

López Olmeda, José Fernando; Madrid, Juan Antonio; Sánchez Vázquez, Francisco Javier

Publication:
Light and temperature cycles as zeitgebers of zebrafish (Danio rerio) circadian activity rhythms

dc.contributor.author	López Olmeda, José Fernando
dc.contributor.author	Madrid, Juan Antonio
dc.contributor.author	Sánchez Vázquez, Francisco Javier
dc.contributor.department	Fisiología
dc.date.accessioned	2024-02-09T11:24:16Z
dc.date.available	2024-02-09T11:24:16Z
dc.date.issued	2006
dc.description	©<2006>. This manuscript version is made available under the CC-BY-NC-ND license http://creativecommons.org/licenses/ccby-nc-nd/4.0/ This document is the Acepted version of a Published Work that appeared in final form in [Chronobiology International]. To access the final edited and published work see [https://doi.org/ 10.1080/07420520600651065]
dc.description.abstract	Light and temperature cycles are the most important synchronizers of biological rhythms in nature. However, the relative importance of each, especially when they are not in phase, has been poorly studied. The aim of this study was to analyze the entrainment of daily locomotor activity to light and/or temperature cycles in zebrafish. Under two constant temperatures (208C and 268C) and 12:12 light-dark (LD) cycles, zebrafish were most active during the day (light) time and showed higher total activity at the warmer temperature, while diurnalism was higher at 208C than at 268C (87% and 77%, respectively). Under thermocycles (12:12 LD, 26:208C thermophase:chryo- phase or TC), zebrafish daily activity synchronized to the light phase, both when the thermophase and light phase were in phase (LD/TC) or in antiphase (LD/CT). Under constant dim light (3 lux), nearly all zebrafish synchronized to thermocycles ( t ¼ 24 h), although activity rhythms (60% to 67% of activity occurred during the thermophase) were not as marked as those observed under the LD cycle. Under con- stant dim light of 3 lux and constant temperature (22.58C), 4 of 6 groups of zebrafish previously entrained to thermocycles displayed free-running rhythms ( t ¼ 22.9 to 23.6 h). These results indicate that temperature cycles alone can also entrain zebrafish locomotor activity.
dc.format	application/pdf	es
dc.format.extent	15
dc.identifier.citation	Chronobiology International, 23(3): 1–14, (2006)
dc.identifier.doi	https://doi.org/10.1080/07420520600651065
dc.identifier.issn	Print: 0742-0528
dc.identifier.issn	Electrónico: 1525-6073
dc.identifier.uri	http://hdl.handle.net/10201/139092
dc.language	eng	es
dc.publisher	Taylor and Francis Group [Commercial Publisher]
dc.publisher	Taylor and Francis [Imprint]
dc.relation	This work has been supported by project AGL 2001-0593-C03-01 of the Spanish Ministry of Science and Technology (MCYT) granted to FJSV.	es
dc.rights	info:eu-repo/semantics/openAccess	es
dc.rights	Attribution-NonCommercial-NoDerivatives 4.0 Internacional	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/4.0/	*
dc.subject	Zebrafish
dc.subject	LD cycle
dc.subject	Thermocycle
dc.subject	Conflicting zeitgeber
dc.subject.other	CDU::5 - Ciencias puras y naturales::57 - Ciencias biológicas en general
dc.title	Light and temperature cycles as zeitgebers of zebrafish (Danio rerio) circadian activity rhythms	es
dc.type	info:eu-repo/semantics/article	es
dspace.entity.type	Publication	es