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頁籤選單縮合
題 名 | Oxygen Depletion Stress on Mortality and Lethal Course of Juvenile Tiger Prawn Penaeus Monodon Fed High Level of Dietary Astaxanthin=餵食高量蝦紅素之幼草蝦(Penaeus monodon)缺氧緊迫下的死亡率及致死過程 |
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作 者 | 陳瑤湖; 陳一鳴; 潘志弘; | 書刊名 | 臺灣水產學會刊 |
卷 期 | 26:2 1999.06[民88.06] |
頁 次 | 頁85-93 |
分類號 | 439.66 |
關鍵詞 | 草蝦; 蝦紅素; 缺氧緊迫; 耗氧; 活存; Penaeus monodon; Astaxanthin; Oxygen depletion stress; Oxygen consumption; Survival; |
語 文 | 英文(English) |
中文摘要 | 為了瞭解餵食高量蝦紅素之幼草蝦在缺氧緊迫下的死亡及致死過程而進行兩試 驗。在第一試驗,缺氧緊迫試驗,幼草蝦先前餵飼含蝦紅素飼料(P-蝦)及不含蝦紅素飼料 即控制飼料(C-蝦)被分成兩組,分別置於缺氧(L)及正常(N)環境中,草蝦首先餵飼2星期 的控制飼料,然後分成兩組.C-蝦繼續餵食控制飼料,P-蝦則餵食含高量蝦紅素(360ppm) 飼料一星期,C-蝦及P-蝦再分成兩組。L組置於缺氧緊迫(4小時溶氧小於1mg/L),N組則無 此緊迫(溶氧一直大於6.0mg/L)。在P-蝦再多餵一星期蝦紅素飼料及L組及N組對換後,同 樣試驗再進衍一次。兩次試驗結果顯示在缺氧緊迫下,P-蝦的活存率較C-蝦高。P-蝦較低 之死亡率可能歸諸於其較高之蝦紅素含量,在第二試驗,致死溶氧試驗,P-蝦及C-蝦各8 尾.各自置入密閉之250ml三角錐瓶,瓶內含飽和溶氧。直到蝦死亡,每小時偵測溶氧。在 11%的顯著水準下,P-蝦致死溶氧較C-蝦低,顯示P-蝦較C-蝦能忍受低溶氧。在10%的顯 著水準下,在前二小時當溶氧高於2mg/L,P-蝦的耗氧率高於C-蝦,但在二小時後,P-蝦 的耗氧率反較C-蝦為低。此結果顯示蝦紅素在不同溶氧狀況下在獲取氧氣時可能扮演緩衝 的角色。 |
英文摘要 | Two experiments were conducted to determine the effect of oxygen depletion stress on mortality and lethal course of juvenile tiger prawn ( Penaeus monodon) fed high level of dietary astaxanthin. The first experiment, oxygen depletion stress test, prawn were previously fed with pigmented diet (P-prawn) and non-pigmented or control diet (C-prawn) then subjected to oxygen depletion (L) and normal (N) conditions. Prawn were first acclimatized with control diet for 2 weeks then separated into 2 groups. Group C-prawn continued feed on control diet and Group P-prawn pigmented diet (360 ppm astaxanthin) for 1 week. Prawn of each group were then divided into 2 subgroups. Subgroup L received oxygen depletion stress (dissolved oxygen, DO < 1.0 mg/1 for 4 h) and subgroup N received no such stress (DO > 6.0 mg/1 for all time). Same trial was conducted for another time when P-prawn were fed pigmented diet for another week and subgroup N and L were switched over. The results from both trials indicated that for those prawn exposed to oxygen depletion stress trial (Subgroup L-prawn), P-prawn had better survival than C-prawn. Lower mortality in P-prawn than in C-prawn could be attributed to higher astaxanthin in P-prawn. In the second experiment, the lethal oxygen test, 8 C-prawn and 8 P-prawn, each was put in a tightly capped 250-mi glass bottle containing seawater saturated with oxygen. DO was monitored hourly until the prawn was dead. Lethal DO level of P-prawn was lower than C-prawn at a significant level (Prob>□T□) of 11% (p < 0.11). It appeared that P-prawn could tolerate lower DO than C-prawn. During the first 2 h when DO was greater than 2 mg/L, oxygen consumption rate (OCR) of P-prawn was higher than C-prawn at p < 0.10 but after the first 2 h, OCR of P-prawn was lower than C-prawn, also at p < 0.10. It appeared that astaxanthin may play a buffer role on oxygen intake according to the environment DO conditions. |
本系統中英文摘要資訊取自各篇刊載內容。