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Thumnail archenvironcontamtoxicol60_44.pdf 584 KB ( 限定公開 )
言語
英語
著者
Jang, Ji Eun
Yamamoto, Hiroki
内容記述(抄録等)
Due to the high importance of biofilms on river ecosystems, assessment of pesticides’ adverse effects is necessary but is impaired by high variability and poor reproducibility of both natural biofilms and those developed in the laboratory. We constructed a model biofilm to evaluate the effects of pesticides, consisting in cultured microbial strains, Pedobacter sp. 7-11, Aquaspirillum sp. T-5, Stenotrophomonas sp. 3-7, Achnanthes minutissima N71, Nitzschia palea N489, and/or Cyclotella meneghiniana N803. Microbial cell numbers, esterase activity, chlorophyll-a content, and the community structure of the model biofilm were examined and found to be useful as biological factors for evaluating the pesticide effects. The model biofilm was formed through the cooperative interaction of bacteria and diatoms, and a preliminary experiment using the herbicide atrazine, which inhibits diatom growth, indicated that the adverse effect on diatoms inhibited indirectly the bacterial growth and activity and, thus, the formation of the model biofilm. Toxicological tests using model biofilms could be useful for evaluating the pesticide effects and complementary to studies on actual river biofilms.
掲載誌名
Archives of Environmental Contamination and Toxicology
60
1
開始ページ
44
終了ページ
56
ISSN
00904341
発行日
2011-01
DOI
NCID
AA00547363
出版者
Springer Verlag
資料タイプ
学術雑誌論文
ファイル形式
PDF
関連情報URL(IsVersionOf)
http://link.springer.com/article/10.1007/s00244-010-9531-4
権利関係
© Springer Science+Business Media, LLC 2010
著者版/出版社版
著者版
部局
生物資源科学部
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