台灣西南沿海地區養殖生態系統物種砷之時空分布及生物累積

Spatiotemporal Distribution and Bioaccumulation of Arsenic Species in the Aquacultural Ecosystem in the Coastal Areas of Southwestern Taiwan

林高弘(Kao-Hung Lin)

指導教授 ： 劉振宇

國立臺灣大學/生物資源暨農學院/生物環境系統工程學研究所/博士(2004年)

https://doi.org/10.6342/NTU.2004.00090

摘要

摘要
本研究以台灣西南部養殖魚貝為對象，調查養殖生態系統中牡蠣、烏魚、文蛤及吳郭魚在不同生長環境下物種砷累積分布。並根據組織器官中物種砷之累積含量，推測4種魚貝類砷累積途徑。研究區域以含有高砷地下水之烏腳病盛行區及西南沿海地區為主，調查種類包含水質(地下水、養殖池及海水)、生物體(軟體組織、魚肉、魚卵等)及池底沈積物。分析項目則為總砷、As(III)、As(V)、DMA及MMA。在水質調查方面烏腳病地區60個養殖池水總砷平均濃度為63.9

關鍵字

吳郭魚 ； 養殖生態系統 ； 烏腳病地區 ； 砷物種 ； 牡蠣 ； 烏魚 ； 文蛤 ； 生物累積

並列摘要

Abstract
This study analyzed the spatiotemporal distribution and bioaccumulation of arsenic (As) species in the aquacultural ecosystem for different aquacultural conditions in the coast of southwestern, Taiwan. The analyzed aquacultural fishes and shellfishes included tilapia, oyster (Crassostred gigas), mugil (Mugil cephalus) and clam (Meretrix lusoria). The bioaccumulation paths were investigated according to the As species contents in different tissues of four aquacultural fishes and shellfishes. The study area focused on the blackfoot disease and coastal areas where groundwater contains high As. The analyzed components of the aquacultural ecosystem contained the As species concentrations in groundwater, aquacultural ponds and sea, in biological tissues (including soft organ, muscle, ovary etc.) of the fishes and shellfishes, and in pond sediments. The analyzed As species included total As, arsenate As(Ⅴ)and arsenite As（Ⅲ）, monomethylarsonic acid（MMA）, and dimethylarsinic acid（DMA）.
The As concentrations of the aquacultural ponds positively correlate with those used groundwater (R=0.51, p<0.01) in the study areas, while the correlation in the aquacultural ponds of tilapia (R=0.73, p<0.01) is the highest among the others. The dating of groundwater of high As concentrations in the blackfoot disease(BFD) area is close to that in Kouhu township of Yunlin but the formation depths of these two area are different. For one year survey of oyster, the average total As and inorganic As concentrations are 9.85

並列關鍵字

oyster ； clam ； bioaccumulation ； tilapia ； aquacultural ecosystem ； mugil ； blackfoot disease area ； Arsenic species

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