Onset of circadian rhythmicity in the brain of Atlantic salmon is linked to exogenous feeding.

ABSTRACT: An organism's biological processes are adapted to and driven by rhythmicity in the natural environment and periodicity of light is one of the most influential factors. In a developing organism, the onset of circadian rhythmicity might indicate the time point of functional necessity for aligning processes to the environment. Here, the circadian clock mechanism has been studied in the developing brain of Atlantic salmon (Salmo salar), by comparing the endogenous feeding alevin, independent on the environment for nutritional supply, to the exogenous feeding fry, dependent on the light period for detecting and catching prey. The results showed that while only a few clock genes were cyclic in the yolk sac alevins, many of the clock genes and genes of the circadian rhythm pathway cycled signific

SUBMITTER: Eilertsen M 

PROVIDER: S-EPMC11567551 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature