文献类型：期刊文献

英文题名：Effect of Chronic Sublethal Exposure of Major Heavy Metals on Filtration Rate, Sex Ratio, and Gonad Development of a Bivalve Species

作者：Liu, G. X.[1,2];Shu, M. A.[1];Chai, X. L.[3];Shao, Y. Q.[3];Wu, H. X.[3];Sun, C. S.[4];Yang, S. B.[5]

机构：[1]Zhejiang Univ, Coll Anim Sci, Hangzhou 310058, Zhejiang, Peoples R China;[2]Zhejiang Univ, Agr Biol Environm Grp, Hangzhou 310003, Zhejiang, Peoples R China;[3]Zhejiang Mariculture Res Inst, Wenzhou 325005, Peoples R China;[4]Taizhou Univ, Sch Life Sci, Taizhou 317000, Peoples R China;[5]Shaoxing Univ, Coll Life Sci, Shaoxing 312000, Peoples R China

年份：2014

卷号：92

期号：1

起止页码：71

外文期刊名：BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY

收录：SCI-EXPANDED(收录号：WOS:000329227000013)、、EI(收录号：20140317198529)、Scopus(收录号：2-s2.0-84891828635)、WOS

基金：This research was supported by the National Natural Science Foundation of China (No. 31001119), the Scientific Research Foundation for the Returned Overseas Chinese Scholars (SEM), the Fundamental Research Funds for the Central Universities, and Open Fund of Key Laboratory of Exploration and Preservation of Costal Bio-resources of Zhejiang.

语种：英文

外文关键词：Heavy metal; Filtration rate; Sex ratio; Gonado-somatic index; Blood clam

外文摘要：The chronic toxic effects of major heavy metals including copper (Cu), zinc (Zn), lead (Pb), and cadmium (Cd) on the filtration rate (FR), sex ratio, and gonad development of immature blood clams, Tegillarca granosa, were investigated. The FRs were significantly inhibited by Cu, Pb and Cd, with rates generally decreasing with both increasing metal concentrations and exposure time. EC50 values for FR after 28 days of exposure were 12.9, 12.7 and 14.4 mu g/L for Cu, Pb and Cd, respectively. Zn exposure had no effect on FR. Sex ratios were significantly altered from controls in favor of an increased proportion of males at metal concentrations of a parts per thousand yen14.2, a parts per thousand yen86 and a parts per thousand yen110 mu g/L for Cu, Pb and Cd, respectively; and at a parts per thousand yen1.68 mg/L for Zn. The gonado-somatic index was significantly reduced in clams at all metal exposures, except for the lowest concentration of Cu (7.1 mu g/L).