Geographic Information System-Based Source Estimation of Copper Pollution in Lake Itezhi-tezhi and Metal-Accumulation Profiles in Oreochromis spp. from Both Field and Laboratory Studies

Nakayama Shouta M. M.; Ikenaka Yoshinori; Muzandu Kaampwe; Choongo Kennedy; Yabe John; Muroya Taro; Ijiri Shigeho; Minagawa Masao; Umemura Takashi; Ishizuka Mayumi

タイトル	en Geographic Information System-Based Source Estimation of Copper Pollution in Lake Itezhi-tezhi and Metal-Accumulation Profiles in Oreochromis spp. from Both Field and Laboratory Studies
作成者	en Nakayama, Shouta M. M. NRID 1000090647629 en Ikenaka, Yoshinori NRID 1000040543509 en Muzandu, Kaampwe en Choongo, Kennedy en Yabe, John en Muroya, Taro en Ijiri, Shigeho NRID 1000090425421 en Minagawa, Masao NRID 1000010250507 en Umemura, Takashi NRID 1000000151936 en Ishizuka, Mayumi NRID 1000050332474
アクセス権	open access
権利情報	en The final publication is available at www.springerlink.com
主題	Other en Lake Itezhi-tezhi Other en Oreochromis spp Other en metal accumulation profiles Other en stable isotope ratio NDC 663
内容注記	Abstract en The Copperbelt region, upstream of the Kafue River, including Lake Itezhi-tezhi (ITT), in Zambia has extensive copper (Cu) mines. In our field study, geographic information system (GIS) analysis in lake sediment indicated that the northern part of the lake, Copperbelt region, could be the Cu pollution source. Concentrations of Cu in stomach contents between fish species were not significantly different. However, Oreochromis spp. liver showed significantly higher Cu concentrations than those in other fish species. Log liver [Cu], standard length, and nitrogen stable isotope ratio were positively correlated only in Oreochromis spp. In the laboratory study, O. niloticus and Oryzias latipes were exposed to Cu for four days and recovery phases up to 28 days were examined. O. niloticus showed significantly higher concentrations of Cu compared with O. latipes at all sampling points. Significantly higher concentrations of Hg in Schilbe intermedius liver than for other fish species were observed, while Oreochromis macrochir showed significantly higher concentration of Cd. In conclusion, the northern part of the lake could be the source of Cu pollution in Lake ITT. Diet may not be the reason for high Cu accumulation in Oreochromis spp. Results from both field and laboratory studies imply that Oreochromis spp. contain high concentrations of Cu under normal physiological conditions.
出版者	en Springer-Verlag
日付	Issued2013-01
言語	eng
資源タイプ	journal article
出版タイプ	AM
資源識別子	HDL http://hdl.handle.net/2115/51779
関連	isVersionOf DOI https://doi.org/10.1007/s00244-012-9802-3 PMID 23052357
収録誌情報	PISSN 0090-4341 en Archives of Environmental Contamination and Toxicology 巻64 号1 開始ページ119 終了ページ129
ファイル	fulltext AECT64-1_119-129.pdf 511.65 KB (application/pdf) Issued2013-01
コンテンツ更新日時	2023-07-26