Effects of rearing condition on the survival of Acisoma panorpoides nymphs
In order to explore the indoor mass rearing condition of dragonflies,a class of insect resources with high exploitation value,the effects of rearing density,water quality,food,and the presence of dependents on the survival rate and the onset time of Acisoma panorpoides nymphs death were investigated in the study.The results showed that high-density rearing conditions accelerated the mortality of Acisoma panorpoides nymphs,and the survival rate of two nymphs group was significantly higher than that of the four nymphs and eight nymphs groups.The death time of eight nymphs was significantly earlier than that of four nymphs.The survival rate of nymphs in the daily water change group was significantly higher than that in the other day water changed group,and the death time of nymphs was significantly later than that in the other day water changed group.Compared with feeding mosquito larvae,feeding red worms could reduce the death of nymphs.The death time of nymphs fed with red worms was significantly later than that fed with mosquito larvae.When there were 8 nymphs,the survival rate of nymphs fed with red worms was significantly higher than that fed with mosquito larvae.The survival of nymphs was not significantly affected by the addition of attachments.Feeding density,water quality and food had significant effects on the survival of young nymphs.The best feeding conditions for young nymphs were as follows:2 nymph in a group,changing the water every day and using red worms as food.Our results will lay a foundation for the breeding and utilization of dragonflies,including Acisoma panorpoides.
万方数据
维普
