Mercury and selenium levels in striped dolphins caught off the Pacific coast of Japan.

• ITANO Kazuomi

  Osaka City Institute of Public Health and Environmental Sciences

• KAWAI Shin''iehiro

  Osaka City Institute of Public Health and Environmental Sciences

• MIYAZAKI Nobuyuki

  Department of Zoology, National Science Museum

• TATSUKAWA Ryo

  Department of Environment Conservation, Ehime University

• FUJIYAMA Toraya

  Department of Marine Sciences, University of the Ryukyus

抄録

Weexamined the distribution of mercury and selenium in fifteen tissues of striped dolphins (Stenella coeruleoalba). The total mercury level in the mature dolphins showeddifferences among the tissues and was highest in the liver. The total mercury concentration in most tissues increased with age, and reached a constant level at 20 to 25 years of age. The total mercury level in the tissues was not appreciably different among mature males, pregnant females, lactating females and resting females. In the muscle of mature individuals, the total mercury level of striped dolphins collected in 1977 and 1980 was appreciably higher than that of those collected 1978 and 1979. Methylmercury showed less variation in concentration amongthe tissues. The ratio of methylmercury to total mercury in muscle decreased with growth after about 10 years of age when the increase of methylmercury stopped. Selenium levels in the dolphins increased with age as total mercury levels did. High correlation coefficients were found between the total mercury and selenium levels in spleen, muscle, pancreas and liver. The concentrations of total mercury in the various tissues of immaturedolphins were muchlower than those of mature ones.

収録刊行物

• Agricultural and Biological Chemistry

  Agricultural and Biological Chemistry 48 (5), 1109-1116, 1984

  公益社団法人 日本農芸化学会

キーワード

• General Agricultural and Biological Sciences
• General Biochemistry, Genetics and Molecular Biology

詳細情報

• CRID: 1390282681445273344
• NII論文ID: 130000026887
• DOI: 10.1271/bbb1961.48.1109
• COI: 1:CAS:528:DyaL2cXktlCht7g%3D
• ISSN: 18811280
• ISSN: 00021369
• ISSN: http://id.crossref.org/issn/00021369
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可