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Differential circadian and light-driven rhythmicity of clock gene expression and behaviour in the turbot, Scophthalmus maximus

Ceinos, R. M.; Chivite, M.; López-Patiño, M. A.; Naderi, F.; Soengas, J. L.; Foulkes, Nicholas S.; Míguez, J. M.

Abstract (englisch):
In fish, the circadian clock represents a key regulator of many aspects of biology and is controlled by combinations of abiotic and biotic factors. These environmental factors are frequently manipulated in fish farms as part of strategies designed to maximize productivity. The flatfish turbot, Scophthalmus maximus, represents one of the most important species within the aquaculture sector in Asia and Europe. Despite the strategic importance of this species, the function and regulation of the turbot circadian system remains poorly understood. Here, we have characterized the core circadian clock genes, clock1, per1, per2 and cry1 in turbot and have studied their daily expression in various tissues under a range of lighting conditions and feeding regimes. We have also explored the influence of light and feeding time on locomotor activity. Rhythmic expression of the four core clock genes was observed in all tissues studied under light dark (LD) cycle conditions. Rhythmicity of clock gene expression persisted upon transfer to artificial free running, constant conditions confirming their endogenous circadian clock control. Furthermore, turbot showed daily cycles of locomotor activity and food anticipatory activity (FAA) under LD and scheduled-feeding, with the activity phase as well as FAA coinciding with and being dependent upon exposure to light. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000097102
Veröffentlicht am 05.08.2019
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Toxikologie und Genetik (ITG)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2019
Sprache Englisch
Identifikator ISSN: 1932-6203
KITopen-ID: 1000097102
HGF-Programm 47.01.01 (POF III, LK 01)
Biol.Netzwerke u.Synth.Regulat. ITG+ITC
Erschienen in PLOS ONE
Band 14
Heft 7
Seiten e0219153
Vorab online veröffentlicht am 05.07.2019
Nachgewiesen in Scopus
Web of Science
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