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

ABSTRACT: 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 li

SUBMITTER: Veedin Rajan VB 

PROVIDER: S-EPMC7611595 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature