title: Spatial and temporal variations of microcystins in hepatopancreas of a freshwater snail from Lake Taihu.
abstract: In this paper, spatial and temporal variations of three common microcystins (MC-RR, MC-YR, and MC-LR) in the hepatopancreas of a freshwater snail (Bellamya aeruginosa) were studied monthly in two bays of Lake Taihu. Microcystins (MCs) concentration in hepatopancreas was quantified by liquid chromatography-mass spectrometry (LC-MS). The MCs concentrations in hepatopancreas were higher at Site 1 than those at other sites, which was in agreement with the changes of intracellular MCs concentrations in the water column. There was a significant correlation between MCs concentrations in the hepatopancreas and that in the seston, suggesting that spatial variances of MCs concentrations in hepatopancreas among the five sites were due to spatial changes of toxic Microcystis cells in the water column. PCCA indicates that in addition to Microcystis, other factors (e.g., water temperature) also substantially affected the accumulation of MCs in hepatopancreas of the snail.
authors.affiliation: Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology of China, Institute of Hydrobiology, Chinese Academy of Sciences, Donghu South Road 7, Wuhan 430072, People's Republic of China.
authors.forename: Dawen
authors.initials: D
authors.lastname: Zhang
authors.forename: Ping
authors.initials: P
authors.lastname: Xie
authors.forename: Yaqin
authors.initials: Y
authors.lastname: Liu
authors.forename: Jun
authors.initials: J
authors.lastname: Chen
authors.forename: Zhourui
authors.initials: Z
authors.lastname: Wen
mesh_terms: D000818:Animals; D002273:Carcinogens / Q000378:metabolism / Q000633:toxicity*; D002681:China; D002853:Chromatography, Liquid; D005618:Fresh Water; D005843:Geography; D043143:Hepatopancreas / Q000737:chemistry / Q000187:drug effects* / Q000378:metabolism; D013058:Mass Spectrometry; D052998:Microcystins / Q000378:metabolism / Q000633:toxicity*; D046931:Microcystis / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism; D012908:Snails / Q000187:drug effects* / Q000378:metabolism; D014874:Water Pollutants, Chemical / Q000378:metabolism / Q000633:toxicity*
chemical_list: D002273:Carcinogens; D052998:Microcystins; D014874:Water Pollutants, Chemical