title: Metal Concentrations in the Liver and Stable Isotope Ratios of Carbon and Nitrogen in the Muscle of Silvertip Shark (Carcharhinus albimarginatus) Culled off Ishigaki Island, Japan: Changes with Growth.
abstract: We analyzed Hg, Cd, Zn, Cu and Fe concentrations in liver samples as well as the Hg concentration and stable isotope ratios of carbon and nitrogen (δ13C and δ15N) in muscle samples from silvertip sharks (Carcharhinus albimarginatus) in Japan. Muscular and hepatic Hg concentrations increased with increased body length. However, these increases were more prominent in the liver than in the muscle samples, and appeared to occur after maturation. Hepatic Zn and Cu concentrations decreased during the growth stage, and then increased concomitantly thereafter with increases in Cd burden. Hepatic Fe concentration from males increased proportionally with increases in body length, whereas no increase was observed in samples from females, probably due to the mother-to-embryo transfer of Fe. The δ13C values tended to decrease with increases in body length, whereas no decrease in the δ15N values was observed.
authors: School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, 1757 Kanazawa, Ishikari-Tobetsu, Hokkaido 061-0293, Japan.
authors: Tetsuya
authors: T
authors: Endo
authors: School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, 1757 Kanazawa, Ishikari-Tobetsu, Hokkaido 061-0293, Japan.
authors: Osamu
authors: O
authors: Kimura
authors: Faculty of Nutritional Sciences, Nakamura Gakuen University, 5-7-1 Befu, Jonan-Ku, Fukuoka 814-0198, Japan.
authors: Chiho
authors: C
authors: Ohta
authors: Faculty of Nutritional Sciences, Nakamura Gakuen University, 5-7-1 Befu, Jonan-Ku, Fukuoka 814-0198, Japan.
authors: Nobuyuki
authors: N
authors: Koga
authors: Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, 1314-1 Shido, Sanuki, Kagawa 769-2193, Japan.
authors: Yoshihisa
authors: Y
authors: Kato
authors: Daiichi College of Pharmaceutical Sciences, 22-1 Tamagawa-Cho, Minami-Ku, Fukuoka 815-8511, Japan.
authors: Yukiko
authors: Y
authors: Fujii
authors: Daiichi College of Pharmaceutical Sciences, 22-1 Tamagawa-Cho, Minami-Ku, Fukuoka 815-8511, Japan.
authors: Koichi
authors: K
authors: Haraguchi
mesh_terms: D000818:Animals; D001835:Body Weight; D002247:Carbon Isotopes / Q000378:metabolism; D004784:Environmental Monitoring; D005260:Female; D062312:Islands; D007564:Japan; D050356:Lipid Metabolism; D008099:Liver / Q000254:growth & development / Q000378:metabolism*; D008297:Male; D019216:Metals, Heavy / Q000378:metabolism*; D009035:Mothers; D009132:Muscles / Q000378:metabolism*; D009587:Nitrogen Isotopes / Q000378:metabolism*; D009929:Organ Size; D012754:Sharks / Q000196:embryology / Q000254:growth & development* / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000378:metabolism
chemical_list: D002247:Carbon Isotopes; D019216:Metals, Heavy; D009587:Nitrogen Isotopes; D014874:Water Pollutants, Chemical