Historical Exposure to Artificial Light at Night Shapes <i>Daphnia</i> Responses: An Experiment Across an Urban-Rural Gradient.

ABSTRACT: Artificial light at night (ALAN) is an increasingly pervasive environmental stressor, yet its long-term impacts on organisms are poorly understood. We used Daphnia pulicaria to investigate how historical exposure to ALAN influences life-history and morphological responses when exposed to ALAN under laboratory conditions. The experiment spanned three generations and included clonal populations from historically exposed and unexposed lakes. Our results show that historically exposed populations have longer lifespans and clutch intervals than unexposed populations, irrespective of the presence or absence of laboratory ALAN. In the presence of laboratory ALAN, individuals from historically exposed populations mature earlier and produce more offspring, whereas individuals from unexposed

SUBMITTER: He Y 

PROVIDER: S-EPMC12696422 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature