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首页> 外文期刊>Marine biology >UV induces reactive oxygen species, damages sperm, and impairs fertilisation in the sea urchin Anthocidaris crassispina
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UV induces reactive oxygen species, damages sperm, and impairs fertilisation in the sea urchin Anthocidaris crassispina

机译:紫外线会诱发活性氧,损害精子,并损害海胆Anthocidaris crassispina的受精

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摘要

We demonstrated that environmentally relevant levels of UVA and UVB can reduce sperm motility (UVA: by 38-58%; UVB: by 42-85%; P < 0.05) and subsequently fertilisation success (UVA: by 38-72%; UVB: by 91-98%; P < 0.05) of urchins (Anthocidaris crassispina) in a dose-dependent manner, implicating that recruitment of urchin populations might be reduced by UVR (ultraviolet radiation) prevailing in their natural habitats. Concomitantly, reactive oxygen species (ROS) production was enhanced by UVA and UVB in a dose-dependent manner (UVA: by 1.3-fold; UVB: by 6.6-7.3-fold; P < 0.05), and the increase in ROS resulted in an increase in lipid peroxidation (LPO) in urchin sperm (UVA: by 4.2-7.2-fold; UVB: by 2.3-2.7-fold; P < 0.05). This study demonstrated that ROS production and oxidative damages enhanced by UVR may account for the observed declines in sperm motility and fertilisation, and suggests that levels of UVR prevailing in the environment may pose a significant threat to the reproductive success of natural populations of urchins spawning in shallow waters.
机译:我们证明了与环境相关的UVA和UVB含量可以降低精子活力(UVA:降低38-58%; UVB:降低42-85%; P <0.05),并随后使受精成功(UVA:降低38-72%; UVB:的海胆(Anthocidaris crassispina)呈剂量依赖性,降低了91-98%; P <0.05),这暗示着在其自然栖息地盛行的UVR(紫外线)可能会减少海胆种群的募集。同时,UVA和UVB以剂量依赖性方式提高了活性氧(ROS)的产生(UVA:1.3倍; UVB:6.6-7.3倍; P <0.05),并且ROS的增加导致海胆精子中脂质过氧化(LPO)的增加(UVA:增加4.2-7.2倍; UVB:增加2.3-2.7倍; P <0.05)。这项研究表明,UVR增强了ROS的产生和氧化损伤,这可能是观察到的精子活力和受精能力下降的原因,并且表明环境中普遍存在的UVR含量可能对自然产卵的海胆繁殖成功构成重大威胁。浅水(区。

著录项

  • 来源
    《Marine biology》 |2005年第1期|p.51-57|共7页
  • 作者

    X. Y. Lu; R. S. S. Wu;

  • 作者单位

    Centre for Coastal Pollution and Conservation, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境生物学;
  • 关键词

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