Mercury accumulation,distribution,and isotopic composition in tissues of the Collared Scops Owl(Otus lettia)

作     者：Dongya Jia Kang Luo Zhidong Xu Xiaohang Xu Chan Li Hongmei Wu Dawei Wang Hui Ye Gaoen Wu Zhuo Chen Guangle Qiu Dongya Jia;Kang Luo;Zhidong Xu;Xiaohang Xu;Chan Li;Hongmei Wu;Dawei Wang;Hui Ye;Gaoen Wu;Zhuo Chen;Guangle Qiu

作者机构：School of Chemistry and Materials ScienceGuizhou Normal UniversityGuiyang 550001China State Key Laboratory of Environmental GeochemistryInstitute of GeochemistryChinese Academy of SciencesGuiyang 550081China College of Resources and Environmental EngineeringGuizhou UniversityGuiyang 550025China School of Ecology and Environmental ScienceYunnan UniversityYunnan 650091China University of Chinese Academy of SciencesBeijing 100049China School of Public HealthGuizhou Medical UniversityGuiyang 550025China College of Ecology and EnvironmentHainan UniversityHainan 570228China 

出 版 物：《Acta Geochimica》 (地球化学学报（英文）)

年 卷 期：2023年第42卷第4期

页      面：637-647页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 08[工学] 09[农学] 0903[农学-农业资源与环境] 0713[理学-生态学] 

基　　金：supported by National Natural Science Foundation of China(NSFC No.42103080) 

主　　题：Mercury Methylmercury Mass-dependent fractionation Mass-independent fractionation Tissue Terrestrial bird 

摘      要：Mercury is a ubiquitous contaminant known to accumulate in wildlife,particularly bird species at higher trophic *** of tissue-specific Hg distributions aids our understanding of Hg bioaccumulation in *** this study,one adult and three juvenile Collared Scops Owls(Otus lettia)were studied to elucidate the bioaccumulation of Hg in body *** tissues and organs(feathers,nails,heart,liver,gizzard,and muscle),as well as gastric contents,were examined for total Hg(THg)and methylmercury(MeHg)contents,Hg isotopic compositions including mass-dependent fractionation(MDF;δ202Hg)and mass-independent fractionation(MIF;Δ199Hg andΔ201Hg),and C(δ13C)and N(δ15N)isotopic ***-specific THg and MeHg concentrations in the adult were in the ranges of 150–1360 ng/g and17–1060 ng/g,and lower in the juveniles at 91–419 ng/g and 67–350 ng/g,***δ^(202)Hg values in the adult were strongly negative at-1.75‰±0.17‰compared with the juveniles at-0.99‰±0.25‰.The adult exhibited lower MIF values than the juveniles,at0.23‰±0.07‰forΔ^(199)Hg and 0.2‰±0.11‰forΔ^(201)Hg,comparedwith0.81‰±0.09‰and0.66‰±0.07‰,*** lower adult MDF and MIF values suggest that the adult tended to accumulate negative Hg isotopes but the juvenile s positive Hg *** between adult and juvenile tissue Hg concentrations indicate that metabolic processes play an important role in Hg accumulation.