新疆艾比湖卤虫休眠卵发育的温度因子分析

Analysis on Temperature Factor in Hatching of Artemia Cysts from Aibi Lake

在不同的温度下对新疆艾比湖卤虫休眠卵进行了孵化试验 ,研究了卤虫发育速度与温度之间的关系 ,提出了相应的数学模型 ;V(T) =(k·T +c)·(1-exp(- (T -TH) /rH) ) ;并以此求算了该种群休眠卵孵化的最低临界温度为 5 .5 6℃ ,平均临界温度为 5 .96℃ ,最低有效积温为 342 .4 7℃×h ,平均有效积温为 4 13.6 3℃×h ;同时还就最适温度、耐温上限比较了高能卵与均能卵在适温能力上的差异 ,并最后讨论了这些参数在集约化养殖中的实践意义 .

The hatching time of Artemia parthenogenetica of Aibi Lake at different temperatures is tested. According to the relationship between developmental rate and temperature, the mathematical model is established as following: V(T)=(k·T+c)·(1- exp(-( T-T H)/r H)) , where V is developmental rate, T is temperature and other parameters are calculated based on the test data. From these, we compute the minimum and the average threshold of development ( T min-0 , T aver-0 ), the minimum and the average cumulative temperature ( Q min , Q aver ) are: T min-0 =5.56℃, T aver-0 =5.96℃, Q min =342.47℃·h, Q aver =413.63℃·h. Additionally, the different abilities at suiting temperature of cysts are discussed accomplishing with the fittest temperature and high lethal temperature. Finally, the significance of these factors in breeding aquatics was expatiated on.