Differential Regulation of Opsin Gene Expression in Response to Internal and External Stimuli.

ABSTRACT: Determining how internal and external stimuli interact to determine developmental trajectories of traits is a challenge that requires the integration of different subfields of biology. Internal stimuli, such as hormones, control developmental patterns of phenotypic changes, which might be modified by external environmental cues (e.g. plasticity). Thyroid hormone (TH) modulates the timing of opsin gene expression in developing Midas cichlid fish (Amphilophus citrinellus). Moreover, fish reared in red light accelerate this developmental timing compared to fish reared in white light. Hence, we hypothesized that plasticity caused by variation in light conditions has coopted the TH signaling pathway to induce changes in opsin gene expression. We treated Midas cichlids with TH and crossed this t

SUBMITTER: Torres-Dowdall J 

PROVIDER: S-EPMC11285405 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature