| EDCs对鱼类种群与生物多样性的影响 |
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| 引用本文： | 贾向阳.EDCs对鱼类种群与生物多样性的影响[J].水生态学杂志,2012,33(4):147-152. |
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| 作者姓名： | 贾向阳 |
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| 作者单位： | 重庆师范大学,重庆,401331 |
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| 基金项目： | 重庆市自然科学基金项目(cstc2012jjA2006);重庆师范大学基金项目(12XLB005) |
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| 摘 要： | 环境内分泌干扰物( Environmental endocrine-disrupting chemicals,EDCs)具有存在的广泛性和生物的难降解性,能够对自然界生物包括人类产生普遍的内分泌干扰效应.EDCs暴露可以引起鱼类内源性激素代谢过程的异常及其他功能异常,改变基因表达,诱导基因突变,引起生殖缺陷、发育异常、生长畸形、免疫功能下降及后代性别比例失衡,影响其存活率及后代繁殖数量,从而导致鱼类种群数量减少.通过降低对环境抑制因素的适应性和破坏生物网结构的稳定性,EDCs能够广泛地削弱生物的进化潜能,影响局部生态系统的功能,从而导致生物多样性丢失.针对EDCs的相关研究对人类社会的可持续发展有重要意义.
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| 关 键 词： | 环境内分泌干扰物(EDCs) 鱼类种群 生物多样性 |
| 收稿时间： | 5/8/2012 10:53:44 AM |
| 修稿时间： | 2012/5/23 0:00:00 |
The impact of EDCs on fish population and biodiversity |
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| jia xiang yang.The impact of EDCs on fish population and biodiversity[J].Journal of Hydroecology,2012,33(4):147-152. |
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| Authors: | jia xiang yang |
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| Institution: | (Chongqing Normal University,Chongqing 401331,P.R.China) |
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| Abstract: | Environmental endocrine-disrupting chemicals (EDCs), also known as environmental hormones, has been reported to induce hormone-like disrupting effects to living organisms, including human, for their extensiveness and difficulties in degradation compared to endogenous steroids. Further researches proved that continuous exposure to EDCs can disrupt endogenous hormones metabolic processes, alter gene expressions and even induces gene mutations to the living organisms,such as fish. All of the above can lead to reproductive defects,developmental abnormality, immune function decline,sex-ratio imbalance.So can decrease number of fish offsprings. By reducing the adaptability of inhibiting factors to the environment and destroying the stability of biological net structure, EDCs can widely weaken the biological evolution potential and influence the function of the local ecological system, so can lead to the loss of biodiversity.Therefore, researches on EDCs have become the leading edge of the hot spots up to now, and it is of great significance for the sustainable development of the human society to establish the monitor system for EDC level and degradation in vitro. |
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