The Effect of Temperature and Components of Artificial Seawater on Digging Ability of Hard Clam (Meretrix lusoria)

溫度和人工海水成分對文蛤(Meretrix lusoria)潛砂能力的影響

李安進(An-Chin Lee) ； 林純如(Chwen-Ru Lin) ； 陳士元(Shih-Yuan Chen)

《臺灣水產學會刊》 31卷4期 (2004/12) Pp. 251-262

https://doi.org/10.29822/JFST.200412.0002

摘要

文蛤在精鹽水和洗滌鹽水中的潛砂能力較人工海水中的文蛤為差，在缺少鎂離子的人工海水中文蛤的潛砂能力顯著地降低。文蛤的潛砂指數隨著人工海水中鉀離子的增加而下降，在人工海水中至少須要83ppm鎂離子，才能維持其潛砂活性，然而當人工海水中額外添加200ppm鉀離子時，則須要166ppm的鎂離子，才能維持其潛砂活性。嗜鎂離子的潛砂能力似乎受外界溫度所影響，文蛤的潛砂能力在較高溫度時，對鎂離子的依賴性較高，添加鎂離子可以降低溫度對潛砂能力的影響。

關鍵字

潛砂能力 ； 鎂離子 ； 鉀離子 ； 溫度和文蛤

並列摘要

Hard clams in high quality salt water (HQSW) and washed salt water (WSW) had much less digging ability than those in artificial seawater (ASW). ASW lacking Mg(superscript +2) reduced significantly the digging ability of hard clams (p＜0.05). A decrease of digging index was found with increasing K(superscript +) concentrations in the ASW. Eighty-three ppm and 166ppm of Mg(superscript +2) are required for maintaining the digging ability of hard clams in ASW and in ASW plus 200ppm of K(superscript +), respectively. Mg(superscript +2)-dependent digging ability varies with ambient temperatures. At higher ambient temperature, Mg(superscript +2)-dependent digging ability is more sensitive to the absence of Mg(superscript +2). This sensitivity can be relieved by the addition of Mg(superscript +2).

並列關鍵字

Digging ability ； magnesium ； potassium ； temperature ； hard clams