著者

Soyano Kiyoshi Aoki Jun-ya Itashiki Yoshimasa Park Chang-Beom Nagae Masaki Takao Yuji Lee Young-Don Yeo In-Kyu Zhong Junsheng

出版者

TERRAPUB

雑誌

Coastal Environmental and Ecosystem Issues of the East China Sea

巻号頁・発行日

pp.215-226, 2010

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There are many chemicals that have estrogen like activity in natural envrionment, and are well known as endocrine disrupting chemicals (EDCs). These chemicals disrupt the endocrine system of wildlife and induce the abnormality of reproductive phenomena. Recently, many scientists reported that EDCs in the aquatic environment interfere with the reproductive process of wild fish. However, there are few information about that in Asian countries. We conducted the survey of contamination by environmental estrogens (EEs) of coastal areas in Korea, People’s Republic of China, and Japan using the wild grey mullet. The grey mullet were collected from five sites (Ansan, Jeju, Yeosu, Tongyeong, and Busan) in Korea, three sites (Zhonshan, Luchaogang, and Pudong) in P.R. China, and three sites (Nagasaki, Omuta, and Fukuoka) in Japan. Contamination by EEs was determined by measuring vitellogenin (VTG) levels in serum and identifying gonadal abnormalities histologically (i.e., testis-ova). In four sites in Korea (Ansan, Yeosu, Tongyeong, and Busan), one site (Luchaogang) in P.R. China, and two sites in Japan (Nagasaki and Fukuoka), serum VTG in immature and male grey mullet was detected at levels greater than 1.0 μg/mL, which is considered to be an abnormal level. Testis-ova was detected in many sites of all countries, except for Yeosu and Jeju Island in Korea. These results suggest that the coastal areas of East China Sea are contaminated with EDCs.