We measured 39 polybrominated diphenyl ethers （PBDEs） in the muscle tissue of three species of fish （Sciaenops ocellatus,Sparus macrocephalus,and Lateolabrax japonicus） and four species of shellfish （Tegillarca g...We measured 39 polybrominated diphenyl ethers （PBDEs） in the muscle tissue of three species of fish （Sciaenops ocellatus,Sparus macrocephalus,and Lateolabrax japonicus） and four species of shellfish （Tegillarca granosa,Cyclina sinensis,Sinonovacula constricta,and Ostrea cucullata） that were collected downstream of electronic-waste recycling plants in Taizhou,China.A total of 24 PBDE congeners （PBDE 24） in the samples were detected.The PBDE 24 （total PBDE） ranged from 545.4 to 1688.7 ng/kg ww （wet weight）.The mean PBDE 24 concentration was 1382.6 ng/kg ww in fish and 858.1 ng/kg ww in shellfish.The lower brominated congeners were detected at relatively high concentrations in all species.The penta-products,produced from e-waste,were found at relatively low levels.A principal component analysis suggested a significant correlation among di-,tri-,tetra-,and hepta-BDEs for the three species of fish.Similarly,we found a significant correlation between mono-and tri-BDEs in the shellfish.Our results suggested that the processes of PBDE metabolism and elimination were similar in both fish and shellfish.In addition,the primary source of PBDEs appeared to be from the debromination of high brominated PBDEs.展开更多
A new species with four macrochaetae in the ＂eyebrow＂ of the anterior dorsal abdominal segment Ⅳ （Abd.Ⅳ）, Homidia quadriseta Pan sp. nov. is described fi＇om Zhejiang Province, eastern China. It can be discrimin...A new species with four macrochaetae in the ＂eyebrow＂ of the anterior dorsal abdominal segment Ⅳ （Abd.Ⅳ）, Homidia quadriseta Pan sp. nov. is described fi＇om Zhejiang Province, eastern China. It can be discriminated from other recorded species in this genus by entire Abd. Ⅲ and posterior half Abd. IV darkly pigmented, 1 macrochaetae on medial Abd. Ⅲ, 2＋2 macrochaetae in ＂eyebrow＂ on anterior Abd. Ⅳ and 3 macrochaetae on posterior central Abd. Ⅳ, clypens with 12 chaetae, and fewer dental spines （7-8） on basal internal denes and with most spines slightly ciliated. Also, the chaetotaxy of the first instar of this new species is provided here.展开更多
基金supported by the Wenling Science and Technology Bureau of Zhejiang Province (No. 2007-35)
文摘We measured 39 polybrominated diphenyl ethers （PBDEs） in the muscle tissue of three species of fish （Sciaenops ocellatus,Sparus macrocephalus,and Lateolabrax japonicus） and four species of shellfish （Tegillarca granosa,Cyclina sinensis,Sinonovacula constricta,and Ostrea cucullata） that were collected downstream of electronic-waste recycling plants in Taizhou,China.A total of 24 PBDE congeners （PBDE 24） in the samples were detected.The PBDE 24 （total PBDE） ranged from 545.4 to 1688.7 ng/kg ww （wet weight）.The mean PBDE 24 concentration was 1382.6 ng/kg ww in fish and 858.1 ng/kg ww in shellfish.The lower brominated congeners were detected at relatively high concentrations in all species.The penta-products,produced from e-waste,were found at relatively low levels.A principal component analysis suggested a significant correlation among di-,tri-,tetra-,and hepta-BDEs for the three species of fish.Similarly,we found a significant correlation between mono-and tri-BDEs in the shellfish.Our results suggested that the processes of PBDE metabolism and elimination were similar in both fish and shellfish.In addition,the primary source of PBDEs appeared to be from the debromination of high brominated PBDEs.
基金supported by the National Natural Science Foundation of China (36101880)Zhejiang Provincial Natural Science Foundation of China (LY15C040001)the College Students’ Innovation and Entrepreneurship Training Program Project (201610350006)
文摘A new species with four macrochaetae in the ＂eyebrow＂ of the anterior dorsal abdominal segment Ⅳ （Abd.Ⅳ）, Homidia quadriseta Pan sp. nov. is described fi＇om Zhejiang Province, eastern China. It can be discriminated from other recorded species in this genus by entire Abd. Ⅲ and posterior half Abd. IV darkly pigmented, 1 macrochaetae on medial Abd. Ⅲ, 2＋2 macrochaetae in ＂eyebrow＂ on anterior Abd. Ⅳ and 3 macrochaetae on posterior central Abd. Ⅳ, clypens with 12 chaetae, and fewer dental spines （7-8） on basal internal denes and with most spines slightly ciliated. Also, the chaetotaxy of the first instar of this new species is provided here.
