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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

  • 出版日期：92-12-31
  • 點閱數：581
  • 修改時間：108-12-27

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。

  • 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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