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題 名 | Effects of Pseudomonas sp. on the Water Quality and Bacterial Flora of a Giant Tiger Prawn (Penaeus monodon) Hatchery=添加假單胞菌菌液對草蝦苗繁殖場水質及細菌相之影響 |
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作 者 | 劉文御; 郭光雄; 陳秀男; | 書刊名 | 臺灣水產學會刊 |
卷 期 | 27:4 2000.12[民89.12] |
頁 次 | 頁273-281 |
分類號 | 439.66 |
關鍵詞 | 蝦苗; 草蝦; 假單胞菌; Pseudomonas sp.; Bioaugmentation; Bacterial flora; Giant tiger prawn hatchery; Penaeus monodon hatchery; |
語 文 | 英文(English) |
中文摘要 | 本研究嘗試利用養蝦流中分離出來的一株假單胞菌控制草蝦苗繁殖場池水中的氨氮 濃度及抑制病原性弧菌的數量,藉以增加蝦苗的活存率。 在未使用藥物的情形下,飼水中的總生菌數為4.6×104~2.56×1012 CFU/ml以上,將假單胞 菌投入試驗組的蝦苗池後與控制組比較,兩者飼育水中的總生菌數並無差異(P>0.05),因此投 入活菌後對水中的總生菌數並無影響。在未使用人工餌料之前,試驗組飼育水中的菌相大多 以代謝不活菌為優勢種,其中最主要的菌屬包括:Acinetobacter,Moraxella及Kingella等,但 在使用人工餌料之後,水中的菌相開始轉變成代謝活潑型的菌屬,其中代表性的菌多 有:Aeromonas,Vibrio,Alteromonas,Haemophilus及Salmonella等。 當蝦幼苗發生大量死亡之時,水中代謝活潑菌株中以病原性弧菌為優勢種,其中又以 Vibrio parahaemolyticus,V. alginolyticus出現最多。在試驗組中的弧菌數量明顯的低於控制 組,因此,試驗菌株對於抑制弧菌的數量有明顯的功效。自眼幼屬第三期開始至後期幼苗第 九期止,以Pseudomonas sp.菌液每日投入池水中300毫升(1.0×109),可以降低試驗組後期幼 苗第四期至第九期(PL4-PL9)時飼育水中非離子化氨(NH3-N)的濃度,其與控制組比較有明顯的 差異(9<0.05)。此外,試驗組池水中非離子化氨的濃度與活存率間呈不完全負相關(r=1:-0.533& 1:-0.5742);相反的,在控制組則呈完全負相關(r-1:-0.926)。而且蝦苗的活存率在試驗組與控制 組間雖無明顯的差異(P>0.05),然而自後期幼苗期開始至第九期的活存率則有明顯差異 (P<0.05),試驗組的活存率明顯的高於控制組。 |
英文摘要 | The present experiment investigated the effects of aquatic bacteria, Pseudomonas sp., on the water quality and bacterial flora in hatching ponds of giant tiger prawn (Penaeus monodon). In giant tiger prawn larval rearing waters waters bactericides have not been applied, the count of colony forming units in 1 ml of rearing water (CFU/ml) may reach a range of 4.6×104~2.56×1012. Addition of a suspension of viable Pseudomonas sp. to this rearing water did not affect the total viable bacterial count (P>0.05). However, Pseudomonas sp. was able to inhibit the growth of Vibrio in the rearing waters since its quantity in the two experimental ponds was lower than that in the control. Prior to hatchery operation, the bacterial genera detected in the experimental pond water were metabolically inactive species (e.g. Acinetobacter, Moraxella and Kinglla). Active strains (e.g. Aeromonas, Haemophilus, Salmonella, and Vibrio) dominated the bacterial flora when artificial feed was introduced. In the case of the occurrence of mass mortality, the majority of metabolically active species that existed in the rearing water were the pathogenic bacteria V. parahaemolyticus and V. alginolyticus. From PL4 to PL9 stages, when Pseudomonas sp. suspension of 300 ml/day (1.0×109CFU/ml was added into the rearing water, the unionic ammonia-N(NH3-N) concentration was lower in the xperimental ponds than in the control. Furthermore, the concentration of NH3-N in the experimental ponds did not affect the survival rate (r=1:-0.533 &1:-0.5742), but the situation appeared to be exactly opposite in case of the control (r=1:-0.926), A significant difference was hence observed from the M3 to PL9 between the survival rates of prawn larvae in treated and control ponds (P<0.05). |
本系統中英文摘要資訊取自各篇刊載內容。