查詢結果分析
來源資料
頁籤選單縮合
題名 | 含麻痺性貝毒渦鞭毛藻在臺灣西部養殖區之出現頻率與水質條件 |
---|---|
作者 | 蘇惠美; 王淑欣; 蕭新泉; 張銀戀; 蘇茂森; | 書刊名 | 水產研究 |
卷期 | 3:1 1995.06[民84.06] |
頁次 | 頁31-39 |
分類號 | 439.6 |
關鍵詞 | 小亞歷山大藻; 出現頻率; 養殖魚塭; Alexandrium minutum; Occurrence rate; Land-based ponds; |
語文 | 中文(Chinese) |
中文摘要 | 小亞歷山大藻 Alexandrium minutum 含有麻痺性貝毒,是一種有毒的 渦鞭毛藻。為瞭解此藻在台灣西部沿海養殖區的發生狀況,以及其與養殖貝類 毒化之關係,自1992年起開始展開毒藻監測調查工作。本報告依據1992-1995 年間,針對彰化、雲林、嘉義、台南及屏東各縣沿海貝類養殖區,河口鄰近魚 塭,養殖區溝渠等進行調查之結果,探討小亞歷山大藻之分佈範圍、出現頻率 及發生條件。四個年度總計採樣1091件,其中有毒藻出現的205件,佔19 % 左右。每個月均可觀察到,不過主要在12月份出現,佔有毒藻水樣之26 %, 當月水樣之42%。以縣別來看,則以屏東縣發生次數最高,有毒藻出現之水樣 發生在屏東縣的高達97%,且該縣有62%測站出現過毒藻。出現毒藻之測站中, 以高屏溪河口之1個測站出現率最高,佔有毒藻出現水樣數之20 %。有毒藻出 現之水樣,其細胞數量大多在10 cells/ml以下,但也曾發生細胞數量高達10,050 cells/ml之水華現象,並使養殖的虱目魚及吳郭魚死亡。出現毒藻之水樣,鹽度 介於5-36 ppt,以11-20 ppt出現比例最高;水溫介於14.6-36℃,以20-30℃間 出現次數最多;pH值介於7.38-10.27,以pH值7.51-8.00池水出現機會最高; 營養鹽為NH4-N 80-2700 ppb,NO3-N 33-259 ppb,NO2-N 1-333 ppb,PO4-P 8- 633 ppb及SiO3-Si 190-4310 ppb,有毒藻出現者範圍較窄,不過,出現數量與 池水營養鹽濃度間,並無固定的相關性。 |
英文摘要 | Alexandrium minutum containing PSP toxin is a harmful dinoflagellate. We have carried out an toxic algal monitoring program along the south west coast of Taiwan since 1992 to understand its occasional blooming and the correlation with toxic clam. This report was based on the data collected from 1992 through 1995. Waters of the clam rearing ponds, neighboring fish or crustacean ponds and the ditches between them from area of Changhwa, Yunlin, Chiayi, Tainan, and Pingtung Hsien, were collected. Physical data and A. minutum of the water samples were studied. Total number of the water samples were 1091. Among them 205 samples (19%) had cells of A. minutum in it. Toxic algae were found existing through the year, but more frequently (26%) found in December. Among five Hsiens the highest occurrence (97%) was found in Pingtung. Samples containing A. minutum were mostly found in one of the ditches near the estuary of Kaoping river. Mostly, the cell density was less than 10 cells/ml, however, a few water blooms containing algal cells more than 10,000 cells/ml were found, the culture milkfish and tilapia were morbid. Salinity of the water samples containing A. minutum ranged between 5-36 ppt with the highest occurrence of algae between 11-20 ppt. Water temperature ranged between 14.6-36℃ with the highest between 20-30 ℃. pH ranged between 7.38-10.27 with the highest between 7.51- 8.00. The nutrient concentrations were NH4-N 80-2700 ppb, NO3-N 33-259 ppb, NO2-N 1-333 ppb, PO4-P 8-633 ppb and SiO3-Si 190-4310 ppb, the range of samples containing A. minutum was narrower, however, there was no relationship between the algal density and the nutrient concentration. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。