水中溶解氧质量浓度对东北林蛙越冬影响的研究

The research of the effect of dissolved oxygen mass concentration on Rana chensinensis

以靖宇县3龄林蛙为研究对象,通过设计非冬眠越冬组、半冬眠越冬组、冬眠组、人工增氧冬眠组4种不同越冬方案,观察水中溶解氧质量浓度(DO)对东北林蛙越冬存活的影响。结果表明:非冬眠组消耗DO速率远高于半冬眠组和冬眠组,而半冬眠组消耗DO速率也略高于冬眠组,林蛙在受到干扰处于活跃状态时消耗DO速率要高于冬眠状态下林蛙;当林蛙出现死亡后其消耗DO速率变慢,林蛙死亡临界DO为1.6 mg·L-1;人工增氧可改善林蛙越冬环境,延长其安全越冬时间。

The effect of dissolved oxygen mass concentration on the survival of Rana chensinensis was observed through de-signing 4 different hibernation plan of non-winter hibernation group, semi-dormant winter group, hibernation group, arti-ficial aeration winter hibernation group by choosing the 3 a Rana chensinensis that growed in Jingyu county as the object. The results showed that the DO consumption rate of non-hibernating group was far higher than semi-hibernation group and hibernation group, while the DO consumption rate of semi-hibernation group were also slightly higher than the hiber-nation group.DO consumption rate of Rana chensinensis was higher than that in the state of hibernation when it was dis-turbed.The DO consumption rate was slow when it apeared dead.The death critical DO was 1.6 mg· L-1 .The artificial oxygen can improve hibernation environment and extend safe hibernation time.