摘要
采用静态呼吸室法,研究了体长2～7 cm红小丑鱼（Amphiprion frenatus）的单位体长耗氧率、单位体重耗氧率和窒息点,及其与体长（体重）和温度的关系。结果显示,红小丑鱼单位体长耗氧率与体长正相关,在26～30℃时,可用方程ORL=0.074L1.111表示,而在22℃时,方程为ORL=0.044L1.127。温度对单位体长耗氧率的影响因鱼体长不同而有差异,2 cm组和7 cm组红小丑鱼单位体长耗氧率随温度升高先升高后下降,3.5cm组和5 cm组红小丑鱼单位体长耗氧率随温度升高而升高,但同体长组26℃和30℃时单位体长耗氧率无显著差异,26～30℃为红小丑鱼的最适水温。温度和体长对红小丑鱼的窒息点没有显著影响,其平均值为（1.268±0.219）mg·L-1。单位体重耗氧率为0.387～2.217 mg·h-1·g-1,与温度呈正相关,与体重呈负相关。各组红小丑鱼的Q10值在22～26℃时均大于2,26～30℃时2 cm组和7 cm组Q10值分别为0.85和1.30,均小于2。总体而言,红小丑鱼对水温变化的适应能力较弱,在养殖过程中应保持水温的稳定或小幅升降,特别是当水温在26℃以下时更应如此;红小丑鱼可根据体长不同进行分段养殖,并可根据体长及对应的单位体长耗氧率来确定合理的养殖与装运密度。
Amphiprion frenatus with body length of 2-7 cm were used as materials to investigate the relation between the growth indicators including unit body length oxygen consumption rate,unit body weight oxygen consumption rate and asphyxia point,and the body length（ body weight） or temperature by a static method of breathing room. The results indicated the unit body length was positively correlated with oxygen consumption rate,and the regression equation at 26- 30 ℃ and 22 ℃ was ORL= 0. 074L1. 111 and ORL= 0. 044L1. 127,respectively. The unit body length oxygen consumption rate was quite different due to the body length under different temperature,indicating that the unit body length oxygen consumption rate of A. frenatus with body length of 2 and 7 cm firstly increased then decreasedwith the increasing temperature,while that of A. frenatus with body length of 3. 5 and 5 cm increased. But there was no significant difference in the unit body length oxygen consumption rate of A. frenatus in the same body length group at 26 and 30 ℃,so 26-30 ℃ was the optimum breeding temperature. The asphyxia point was（ 1. 268 ± 0. 219） mg·L- 1,which was irrelevant to breeding temperature or body length. The unit body weight oxygen consumption rate was 0. 387—2. 217 mg·h- 1·g- 1,which was positively correlated with temperature,but negatively correlated with breeding temperature. The Q10 values of A. frenatus in different groups were all above 2 at 22-26 ℃,but the Q10 values of the 2 cm group and 7 cm group were 0. 85 and 1. 30 at 26-30 ℃,which was below 2. In conclusion,A. frenatus showed weak adaptability to water temperature changes,so the water temperature should be maintained stably in the process of breeding,especially at 26 ℃. The breeding of A. frenatus could be carried out according to the body length,moreover,the reasonable culture and loading density could be determined in accordance with its body length and the corresponding unit body length oxygen consumption rate.
出处
《浙江农业学报》
CSCD
北大核心
2015年第11期1916-1921,共6页
Acta Agriculturae Zhejiangensis
基金
浙江省科技项目(2013F50017)
温州市水产增养殖技术创新团队资助(C20120004)
关键词
红小丑鱼
耗氧率
窒息点
体长
水温
Amphiprion frenatus
oxygen consumption rate
asphyxia point
body length
breeding temperature
