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海水繁養殖研究(2003~2006)

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  • 點閱: 2711
  • 日期: 2019-10-17
海水繁養殖研究(2003~2006)-飼育水溫對文蛤(Meretrix lusoria)成長與活存率之影響
主題: 飼育水溫對文蛤(Meretrix lusoria)成長與活存率之影響
摘要:
本研究探討飼育水溫對文蛤成長及活存率之影響,使用小型文蛤4.31 ± 0.37 mm、中型文蛤11.86 ± 0.65 mm與大型文蛤20.63 ± 1.53 mm等三種體型,飼養在15°C、20°C、25°C、30°C及35°C的恆溫室之FRP水槽,鹽度維持在15-18 ppt。在120天飼育下,小型文蛤以30°C及35°C有較好之成長率,但其活存率卻相當低,只有1-2成,15°C、20°C及25°C有較好的活存率達7成以上,其生物總量以20、25°C最好,顯示小型文蛤以20°C、25°C養殖最有利。中型、大型文蛤在各溫度其成長率雖有溫度較高成長較好之現象,但差異不大,活存率以低溫較好,活存率在9成以上,高溫組也在7成以上,以致其生物總量差異不大,所以15-35°C均適合其養殖,但由於市場喜歡大型文蛤,所以高溫養殖較有利。
出版日期: 2003/12/31
報告來源:
作者: 陳鴻議 何雲達
卷: 1
期別: 2
頁碼: 17-23
作者 auther(英): Hung-Yee Chen and Yun-Dar Ho
標題title(英): Effects of different temperature on growth and survival of hard clams (Meretrix lusoria)
摘要abstract(英): The effects of different rearing temperature on growth and survival rate of hard clams were investigated. The small (4.31 ± 0.27 mm), moderate (11.86 ± 0.65 mm) and large (20.63 ± 0.53 mm) sizes of hard clams were used in this study. These hard clams were rearing at 5 different temperatures, i.e., 15, 20, 25, 30, and 35°C in FRP tanks. The rearing salinity was 15-18 ppt. The duration of the experiment was 120 days. For small size group, the clams had higher growth rate at 30 and 35°C, but the survival rates were low (10-20%). The survival ratse of hard clams cultured at 15°C, 20°C, and 25°C were over 70%. The largest biomass revealed at 20°C and 25°C. The optimal rearing temperatures were 20°C and 25°C for small size hard clams. For moderate and large size groups, growth rate increased with increasing rearing temperature. Low rearing temperature had higher survival rate (over 90%). However, moderate and large size clams cultured under low temperature had high survival (about 90%). The optimal rearing temperatures for moderate and large size clams were 15-35°C.
使用語言: 中文
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