五日龄草鱼对温度的耐受性的研究  

STUDY ON THE TOLERANCE OF 5-DAY-OLD GRASS CARP CTENOPHARYNGODON IDELLA TO WATER TEMPERATURE

作　　者：文良印[1] 谭玉钧[2] 王武[2] 

机构地区：[1]四川畜牧兽医学院 [2]上海水产大学

出　　处：《西南农业大学学报（社会科学版）》1995年第3期10-14,共5页Journal of Southwest Agricultural University:Social Science Edition

摘　　要：通过研究五日龄草鱼对水温的突变(升高或降低)、渐变(升高或降低,速度约3℃/h)、渐降后又回升的耐受性,以及低温对其摄食和冷休克的影响。结果表明:鱼的驯化温度为22℃时,温度突然升高和逐渐升高引起的致死高温分别为35.6℃和36.5℃,而驯化温度为25℃的鱼,这两者分别为37.3℃和37.4℃;对这两批鱼,无论哪种变温方式,水温上升10—13℃或降低12℃引起的死亡率都不到10％,对于驯化温度为22℃的鱼,水温渐降至7℃维持12hs然后回升至室温后24小时内伤亡率不到10％;其开始摄食水温、0、50％、100％冷休克水温分别为11.0、13.5、10.7、8.0℃。Results of study on the tolerance of 5-day-old grsaa carp to the sudden change (rise or fall),gradual change (ries or fall ,at speed of about 3℃/h) and fall -then -rise of water temperature showed that;with the acclimation temperature(AT) being 22℃,its upper letal temperature caused by sudden or gradual rise of water temperature was 35. 6℃ or 36. 5℃ ,and with AT being 25℃ ,it was 37. 3℃or 37. 4℃. When its water temperature(AT = 22 or 25℃) rose 10-13℃ or fell 12℃ suddenly or gradually,its mortality was below 10%. When its water temperature(AT = 22℃)fell to 7℃ gradually,stayed for 12hs at 7℃and rose back to room temperature,24hs later,its percentage of the died ,deformed and comatose was below 10%. The temperatures of beginning to feed and 0,50%,100% larvae cold shock were 11,13. 5,10. 7,8℃ respectively.

关 键 词：五日龄草鱼 温度 耐受性 

分 类 号：S917[农业科学—水产科学]