Effects of acute γ-irradiation on the aquatic microbial microcosm in comparison with chemicals

被引：24

作者：

Fuma, Shoichi ^{[1
]}

Ishii, Nobuyoshi ^{[1
]}

Takeda, Hiroshi ^{[1
]}

Miyamoto, Kiriko ^{[1
]}

Yanagisawa, Kei ^{[1
]}

Doi, Kazutaka ^{[2
]}

Kawaguchi, Isao ^{[2
]}

Tanaka, Nobuyuki ^{[3
]}

Inamori, Yuhei ^{[4
]}

Polikarpov, Gennady G. ^{[5
]}

机构：

[1] Natl Inst Radiol Sci, Environm Radiat Effects Res Grp, Inage Ku, Chiba 2638555, Japan

[2] Natl Inst Radiol Sci, Regulatory Sci Res Grp, Inage Ku, Chiba 2638555, Japan

[3] Natl Inst Environm Studies, Div Environm Chem, Tsukuba, Ibaraki 3058506, Japan

[4] Fukushimo Univ, Fac Symbiot Syst Sci, Fukushima 9601296, Japan

[5] AO Kovalevsky Inst Biol So Seas, UA-99011 Sevastopol, Ukraine

来源：

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY | 2009年 / 100卷 / 12期

基金：

日本学术振兴会;

关键词：

Community-level effect; Interspecies interaction; Aquatic microbial community; Microcosm; Comparative risk assessment; Ionising radiation; Chemical; IONIZING-RADIATION; ENVIRONMENT; PROTECTION; RADIOECOLOGY; RESISTANCE; STRESS;

D O I：

10.1016/j.jenvrad.2009.06.007

中图分类号：

X [环境科学、安全科学];

学科分类号：

083001 [环境科学];

摘要：

Effects of acute gamma-irradiation were investigated in the aquatic microcosm consisting of green algae (Chlorella sp. and Scenedesmus sp.) and a blue-green alga (Tolypothrix sp.) as producers; an oligochaete (Aeolosoma hemprichi), rotifers (Lecane sp. and Philodina sp.) and a ciliate protozoan (Cyclidium glaucoma) as consumers; and more than four species of bacteria as decomposers. At 100 Gy, populations were not affected in any taxa. At 500-5000 Gy, one or three taxa died out and populations of two or three taxa decreased over time, while that of Tolypothrix sp. increased. This Tolypothrix sp. increase was likely an indirect effect due to interspecies interactions. The principal response curve analysis revealed that the main trend of the effects was a dose-dependent population decrease. For a better understanding of radiation risks in aquatic microbial communities, effect doses of gamma-rays compared with copper, herbicides and detergents were evaluated using the radiochemoecological conceptual model and the effect index for microcosm. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1027 / 1033

页数：7

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