关键词: Artificial light Chlorella Life history Phaeocystis Rotifer

来  源:   DOI:10.1016/j.marpolbul.2024.116527

Abstract:
Artificial light at night (ALAN) may pose threat to rotifer Brachionus plicatilis. Additionally, the food of rotifer, i.e. algal community composition, often fluctuates. Thus, we selected five wavelengths of ALAN (purple, blue, green, red, white) and a three-colored light flashing mode (3-Flash) to test their impacts on life history traits of B. plicatilis with different food experiences, including those feeding Chlorella vulgaris (RC) or Phaeocystis globosa (RP). Results indicated purple ALAN promoted RC development, white ALAN inhibited RC development, while 3-Flash and white ALAN promoted RP development. Under red and white ALAN, RP increased fecundity but decreased lifespan. High-quality food enhanced rotifer\'s resistance to the impact of ALAN on lifespan. ALAN and food experience interacted on B. plicatilis. The effect of blue ALAN has less negative effects on B. plicatilis, based on hierarchical cluster analysis. Such findings are helpful to evaluate the potential impact of ALAN on marine zooplankton.
摘要:
夜间人造光(ALAN)可能对轮虫Brachionusplicatilis构成威胁。此外,轮虫的食物,即藻类群落组成,经常波动。因此,我们选择了五个波长的ALAN(紫色,蓝色,绿色,红色,白色)和三色光闪烁模式(3-Flash),以测试它们对具有不同食物体验的B.plicatilis生活史特征的影响,包括喂食小球藻(RC)或球形囊藻(RP)的那些。结果表明紫色ALAN促进了RC的发展,白色ALAN抑制RC发展,而3-Flash和白色ALAN促进了RP的发展。在红色和白色的艾伦下,RP增加了繁殖力,但缩短了寿命。优质食品增强了轮虫对ALAN寿命的抵抗力。艾伦和食物体验在plicatilis上互动。蓝色ALAN对plicatilis的负面影响较小,基于层次聚类分析。这些发现有助于评估ALAN对海洋浮游动物的潜在影响。
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