摘要
[目的]研究锦绣龙虾(Panulirus ornatus)幼虾不同环境条件下的耗氧率和最适温度、盐度、pH范围内的窒息点。[方法]采用封闭静水式试验方法,设置温度20、23、26、29、32℃,盐度15‰、20‰、25‰、30‰、35‰,pH 6.0、6.5、7.0、7.5、8.0、8.5、9.0,研究体质量(2.5~5.5)g的锦绣龙虾幼虾在不同温度、盐度、pH条件下的耗氧率和在最适温度、盐度、pH范围内的窒息点。[结果]锦绣龙虾幼虾耗氧率与温度呈正相关,温度越高,耗氧率越大,20℃时耗氧率为0.57 mg/(g·h),而32℃时耗氧率升至1.12 mg/(g·h)。锦绣龙虾幼虾耗氧率与盐度的关系呈“U”字型,在盐度25‰和30‰时,耗氧率较低,分别是0.40和0.37 mg/(g·h)。pH由6.0升至8.0时,耗氧率从2.82 mg/(g·h)降至0.76 mg/(g·h);在pH 8.0~8.5,耗氧率较低。在温度28℃、盐度30‰、pH 8.15的条件下,锦绣龙虾幼虾的窒息点为0.45 mg/L。[结论]根据研究结果推测,锦绣龙虾幼虾的最适温度在26~29℃,最适盐度在25‰~30‰,最适pH在8.0~8.5。
[Objective]In order to study the oxygen consumption rate and suffocation threshold(optimal temperature,salinity and pH)of Panulirus ornatus under different environmental conditions.[Method]The closed hydrostatic experiment method was used to study the oxygen consumption rate of juvenile P.ornatus with body mass of(2.5-5.5)g under different temperature,salinity and pH conditions,with temperature of 20,23,26,29 and 32℃,salinity of 15‰,20‰,25‰,30‰ and 35‰,and pH of 6.0,6.5,7.0,7.5,8.0,8.5 and 9.0,and the suffocation threshold in the range of optimum temperature,salinity,and pH.[Result]There was a positive correlation between the oxygen consumption rate of juvenile P.ornatus and temperatures.The oxygen consumption rate increased as the temperature increased.At 20℃,the oxygen consumption rate was 0.57 mg/(g·h),while at 32℃,the oxygen consumption rate increased to 1.12 mg/(g·h).The relationship between the oxygen consumption rate of juvenile P.ornatus and salinity presented a u-shaped model.The oxygen consumption rate was lower at salinity 25‰ and 30‰ than other salinity,which was 0.40 and 0.37 mg/(g·h),respectively.When pH increased from 6.0 to 8.0,the oxygen consumption rate decreased from 2.82 mg/(g·h)to 0.76 mg/(g·h).The oxygen consumption rate was lower and more stable than other pH value when the pH in the range of 8.0-8.5.The suffocation threshold of juvenile P.ornatus was 0.45 mg/L under the condition of 28.0℃,the salinity 30‰,the pH 8.15.[Conclusion]Based on the results of the study,the optimal temperature range,the optimal salinity range and the optimal pH were 26-29℃,25‰-30‰ and 8.0-8.5,respectively.
作者
罗嘉俊
梁华芳
卓宏标
温崇庆
LUO Jia-jun;LIANG Hua-fang;ZHUO Hong-biao(Fisheries College,Guangdong Ocean University,Zhangjiang,Guangdong 524088)
出处
《安徽农业科学》
CAS
2020年第17期112-114,共3页
Journal of Anhui Agricultural Sciences
基金
广东省科技厅项目(2013B020308009)。
关键词
锦绣龙虾幼虾
温度
盐度
PH
耗氧率
窒息点
Juvenile of Panulirus ornatus
Temperature
Salinity
pH
Oxygen consumption rate
Suffocation threshold
