Acute Toxicity of Organochiorine Pesticides to Fishes and Shellfishes of a Tropical Estuary
スポンサーリンク
概要
- 論文の詳細を見る
In the present study, acute toxicity data were obtained for different organochlorine pesticides (DDT, lindane and endosulfan) to estuarine fishes and shellfishes under continuous flow through system. Median lethal concentration (LC50) was obtained for different time intervals (24, 48, 72, 96 and 120 hr.) and the toxicity curves were drawn using these values to determine the incipient lethal concentration (ILC50) values. Increase in the exposure time decreased the LC50 values of the pesticides to the organisms. DDT was found to be highly toxic to the organisms tested followed by lindane and endosulfan. Of the organisms studied, Mugil cephalus was found to be most sensitive to the pesticides. Bivalves were highly resistant to the pesticides tested than fishes. Behavioral responses of the test organisms to the toxicant was also described in detail. Safe concentrations and the relative resistance of these organochlorine pesticides to the organisms were discussed.3種の有機塩素系殺虫剤(DDT、リンデン、エンドサルファン)が熱帯河口域の魚貝類5種(二枚貝3種、魚類2種)におよぼす急性毒性を連続フローシステムの実験系を期いて明らかにした。まず各殺虫剤ごとに半数致死濃度LC50の24、48、72、96、120時間値を測定し、これらの値から初期半数致死濃度ILC50(Incipient Median Lethal Concentration)を推定した。毒性試験の結果、供試殺虫剤の中ではDDTの毒性が最も強かった。5種の試験生物の中で、殺虫剤に対する感受性は魚類のM.cephalusで最も高く、一方抵抗性は二枚貝で高かった。試験生物にとって無害な各殺虫剤の濃度(Safe Concentration)を求め、またこれらの殺虫剤が試験生物の行動におよぼす影響を詳述した。
- 広島大学生物生産学部,農林水産研究情報センターの論文
著者
-
Rajendran Narasimmalu
Graduate School Of Environment And Information Sciences Yokohama National University
-
Rajendran Narasimmalu
Graduate School Of Engineering Yokohama National University
-
Rajendran N
Graduate School Of Environment And Information Sciences Yokohama National University
-
Rajendran N
Graduate School Of Engineering Yokohama National University
関連論文
- カキ養殖が広島湾の窒素循環に果たす役割(Journal of Oceanography Vol.56(2000))
- 広島湾の垂下式カキ養殖による粒状物質の取り込みと排出 : 現場養殖筏における研究
- Quantitative Measurement of Fungal DNA Extracted by Three Different Methods Using Real-Time Polymerase Chain Reaction
- Interference of Contaminating DNA in the Quantification of a Toluene-Induced tod Gene in Pseudomonas putida(ENVIRONMENTAL BIOTECHNOLOGY)
- The Role of Suspended Oyster Culture on Nitrogen Cycle in Hiroshima Bay
- Application of Water Quality Data to Estimate the Cultured Oyster Biomass in Hiroshima Bay:Estimation of the Cultured Oyster Biomass
- Fatty Acid Analysis to Determine the Seasonal Variation in Microbial Biomass and its Community Structure of Coastal Sediments
- Microbial Biomarker Fatty Acid Composition in Coastal Sediments
- Identification and validation of suitable reference genes for quantitative expression of xylA and xylE genes in Pseudomonas putida mt-2(METHODS)
- Spatial and temporal variations of sediment quality in and around fish cage farms : A case study of aquaculture in the Seto Inland Sea, Japan
- 指標性脂質バイオマ-カ-による海底堆積物における微生物群集の解析 (総特集 バイオマ-カ-による海洋微生物群集の解析)
- Microbial community Structure Analysis of Euxinic Sediments Using Phospholipid Fatty Acid Biomarkers
- COMPARISON OF MICROBIAL COMMUNITY STRUCTURE IN SURFACE SEDIMENTS OF SAROMA KO LAGOON WITH SETO INLAND SEA IN WINTER (16th Symposium on Polar Biology)
- VERTICAL DISTRIBUTION OF PHOTOSYNTHETIC PIGMENTS CHARACTERIZED BY HPLC UNDER THE ICE OF SAROMA KO LAGOON (16th Symposium on Polar Biology)
- Acute Toxicity of Organochiorine Pesticides to Fishes and Shellfishes of a Tropical Estuary
- Analysis of Bacterial Populations in the Environment Using Two-dimensional Gel Electrophoresis of Genomic DNA and Complementary DNA
- Analysis of Bacterial Populations in the Environment Using Two-dimensional Gel Electrophoresis of Genomic DNA and Complementary DNA