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Pollution of Environmental Endocrine Disrupting Chemicals(EDCs) in Water and Its Adverse Reproductive Effect on Fish
Author(s): Shunlong MENG, Chao SONG, Limin FAN, Liping QIU, Jiazhang CHEN, Pao XU, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences /Scientific Observing and Experimental Station of Fishery Resources and Environment in the Lower Reaches of Changjiang River, Ministry of Agriculture/Key Open Laboratory of Ecological Environment and Resources of Inland Fisheries, Chinese Academy of Fishery Sciences, Wuxi Fishery College, Nanjing Agricultural University
Pages: 463-
469
Year: 2014
Issue:
3
Journal: Agricultural Science&Technology
Keyword: Environmental endocrine disrupting chemical; Water body; Pollution situation; Fish; Damage of reproduction;
Abstract: Environmental endocrine disrupting chemicals(EDCs), commonly found in the environment, come from industry and agriculture, including pesticides, fungicides, insecticides, herbicides, and other chemicals. Nowadays, more and more EDCs were released into the environment. EDCs go into water body via atmosphere sedimentation, surface runoff, soil eluviation, etc., so water body becomes the main place for existing. In order to attract scientific and public attention worldwide and to prevent EDCs pollution, in this study we reviewed the classification of EDCs and their concentrations in natural water bodies, drinking water sources and water plants, and the reproductive toxicity of EDCs to fish were reviewed. EDCs could disturb the endocrine system and make reproductive organs and reproduction abnormal, resulting in fertility descending, reproduction function damage, community quantity decrease and even species extinction. In addition, EDCs could disrupt the homeostasis maintained by hormones, which would result in defects of neural development and abnormalities of the endocrine and reproductive systems. The exact molecular mechanisms have not been completely reported, but researches have suggested that multiple mechanisms were involved in the action of EDCs. Although there have been researches on the biohazard of EDCs, there still exist problems of weakness in fundamental researches, difficulties in recognizing and identifying EDCs and high cost, which restraint the knowledge on them.
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