Seasonal variation in UVA light drives hormonal and behavioural changes in a marine annelid via a ciliary opsin.

Autor: Veedin Rajan VB; Max Perutz Labs, Vienna BioCenter, University of Vienna, Vienna, Austria.; Research Platform 'Rhythms of Life', Vienna BioCenter, University of Vienna, Vienna, Austria., Häfker NS; Max Perutz Labs, Vienna BioCenter, University of Vienna, Vienna, Austria.; Research Platform 'Rhythms of Life', Vienna BioCenter, University of Vienna, Vienna, Austria., Arboleda E; Max Perutz Labs, Vienna BioCenter, University of Vienna, Vienna, Austria.; Research Platform 'Rhythms of Life', Vienna BioCenter, University of Vienna, Vienna, Austria.; Institut de Génomique Fonctionnelle de Lyon (IGFL), École Normale Supérieure de Lyon, Lyon, France., Poehn B; Max Perutz Labs, Vienna BioCenter, University of Vienna, Vienna, Austria.; Research Platform 'Rhythms of Life', Vienna BioCenter, University of Vienna, Vienna, Austria., Gossenreiter T; Max Perutz Labs, Vienna BioCenter, University of Vienna, Vienna, Austria., Gerrard E; Division of Neuroscience and Experimental Psychology, University of Manchester, Manchester, UK., Hofbauer M; Max Perutz Labs, Vienna BioCenter, University of Vienna, Vienna, Austria.; Research Platform 'Rhythms of Life', Vienna BioCenter, University of Vienna, Vienna, Austria.; loopbio, Vienna, Austria., Mühlestein C; Marine Breeding Systems, St. Gallen, Switzerland., Bileck A; Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria., Gerner C; Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria., Ribera d'Alcala M; Stazione Zoologica Anton Dohrn, Napoli, Italy., Buia MC; Stazione Zoologica Anton Dohrn, Napoli, Italy., Hartl M; Max Perutz Labs, Vienna BioCenter, University of Vienna, Vienna, Austria., Lucas RJ; Division of Neuroscience and Experimental Psychology, University of Manchester, Manchester, UK., Tessmar-Raible K; Max Perutz Labs, Vienna BioCenter, University of Vienna, Vienna, Austria. kristin.tessmar@mfpl.ac.at.; Research Platform 'Rhythms of Life', Vienna BioCenter, University of Vienna, Vienna, Austria. kristin.tessmar@mfpl.ac.at.
Jazyk: angličtina
Zdroj: Nature ecology & evolution [Nat Ecol Evol] 2021 Feb; Vol. 5 (2), pp. 204-218. Date of Electronic Publication: 2021 Jan 11.
DOI: 10.1038/s41559-020-01356-1
Abstrakt: The right timing of animal physiology and behaviour ensures the stability of populations and ecosystems. To predict anthropogenic impacts on these timings, more insight is needed into the interplay between environment and molecular timing mechanisms. This is particularly true in marine environments. Using high-resolution, long-term daylight measurements from a habitat of the marine annelid Platynereis dumerilii, we found that temporal changes in ultraviolet A (UVA)/deep violet intensities, more than longer wavelengths, can provide annual time information, which differs from annual changes in the photoperiod. We developed experimental set-ups that resemble natural daylight illumination conditions, and automated, quantifiable behavioural tracking. Experimental reduction of UVA/deep violet light (approximately 370-430 nm) under a long photoperiod (16 h light and 8 h dark) significantly decreased locomotor activities, comparable to the decrease caused by a short photoperiod (8 h light and 16 h dark). In contrast, altering UVA/deep violet light intensities did not cause differences in locomotor levels under a short photoperiod. This modulation of locomotion by UVA/deep violet light under a long photoperiod requires c-opsin1, a UVA/deep violet sensor employing G i signalling. C-opsin1 also regulates the levels of rate-limiting enzymes for monogenic amine synthesis and of several neurohormones, including pigment-dispersing factor, vasotocin (vasopressin/oxytocin) and neuropeptide Y. Our analyses indicate a complex inteplay between UVA/deep violet light intensities and photoperiod as indicators of annual time.
Databáze: MEDLINE
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