Departamento de Ecología & Biodiversidad, Facultad Ciencias de la Vida, Universidad Andrés Bello, Av. República 440, Santiago, Chile; Centro de Investigaciones Marinas de Quintay (CIMARQ), Chile.
Centro de Estudios Avanzados en Zonas Áridas (CEAZA), Coquimbo, Chile; Laboratorio de Ecología y Conducta de la Ontogenia Temprana (LECOT), Coquimbo, Chile.
Mar Pollut Bull. 2023 Aug;193:115190. doi: 10.1016/j.marpolbul.2023.115190. Epub 2023 Jun 17.
Artificial Light at Night (ALAN) alters cycles of day and night, potentially modifying species' behavior. We assessed whether exposure to ALAN influences decision-making (directional swimming) in an intertidal rockfish (Girella laevisifrons) from the Southeastern Pacific. Using a Y-maze, we examined if exposure to ALAN or natural day/night conditions for one week affected the number of visits and time spent in three Y-maze compartments: dark and lit arms ("safe" and "risky" conditions, respectively) and a neutral "non-decision" area. The results showed that fish maintained in natural day/night conditions visited and spent more time in the dark arm, regardless of size. Instead, fish exposed to ALAN visited and spent more time in the non-decision area and their response was size-dependent. Hence, prior ALAN exposure seemed to disorient or reduce the ability of rock fish to choose dark conditions, deemed the safest for small fish facing predators or other potential threats.
人工夜间光照（ALAN）改变了日夜周期，可能会改变物种的行为。我们评估了暴露于 ALAN 是否会影响东南太平洋岩鱼（Girella laevisifrons）的决策制定（定向游泳）。使用 Y 型迷宫，我们研究了暴露于 ALAN 或自然昼夜条件一周是否会影响三种 Y 型迷宫隔间的访问次数和停留时间：黑暗和照明臂（分别为“安全”和“风险”条件）和中性“非决策”区域。结果表明，无论大小如何，在自然昼夜条件下饲养的鱼类都会在黑暗的臂中停留更长时间。相反，暴露于 ALAN 的鱼类会在非决策区域中停留更长时间，并且它们的反应与大小有关。因此，先前的 ALAN 暴露似乎会使岩鱼迷失方向或降低其选择黑暗条件的能力，而对于面临捕食者或其他潜在威胁的小鱼来说，黑暗条件是最安全的。
