Xu Xiuwen, Wang Zexianghua, Jin Xiuqi, Ding Keying, Yang Jingwen, Wang Tianming
National Engineering Laboratory of Marine Germplasm Resources Exploration and Utilization, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan 316022, China.
Animals (Basel). 2023 Sep 27;13(19):3035. doi: 10.3390/ani13193035.
Limited data are available regarding the effects of elevated coastal artificial light at night (ALAN) on intertidal echinoderms. In this study, we investigated the behavioral, morphological, and physiological responses of the sea urchin () after continuous exposure to ALAN at light intensities of 0.1, 300, and 600 Lux for 6 weeks. Our findings revealed that ALAN at 300 Lux substantially reduced food consumption, Lantern weight, and gonadosomatic index (GSI). On the other hand, ALAN at 600 Lux notably prolonged the righting and covering response times and elevated the 5-HIAA/5-HT ratio, while concurrently decreasing food consumption, body weight, Lantern weight, GSI, and gene expression. These results indicated that continuous exposure to ALAN could cause an adverse effect on fitness-related traits, including behavioral responses, growth, reproductive performance, and photoreception of sea urchins. The present study provides new insights on the impact of light pollution on echinoderms.
关于沿海夜间人工光（ALAN）强度升高对潮间带棘皮动物的影响，现有数据有限。在本研究中，我们调查了海胆在连续6周暴露于0.1、300和600勒克斯光照强度的ALAN下的行为、形态和生理反应。我们的研究结果表明，300勒克斯的ALAN显著降低了食物消耗量、灯笼重量和性腺指数（GSI）。另一方面，600勒克斯的ALAN显著延长了翻正和覆盖反应时间，并提高了5-羟吲哚乙酸/5-羟色胺（5-HIAA/5-HT）比值，同时降低了食物消耗量、体重、灯笼重量、GSI和基因表达。这些结果表明，持续暴露于ALAN会对与健康相关的性状产生不利影响，包括海胆的行为反应、生长、繁殖性能和光感受。本研究为光污染对棘皮动物的影响提供了新的见解。
