Screening Test of Spawning Medium Artificial Breeding Harmonia axyridis Pallas
HOU Zheng-rong;GUO Xi-hong;WANG Lu;LI Jin-ping;YIN Zhe;Beijing Plant Protection Station;Beijing Pherobio Technology Co.,Ltd.;
Using leaves of cotton,broad bean,pakchoi,cabbage,folding papers and honeycomb papers as the spawning medium of artificial breeding Harmonia axyridis Pallas,the tendency of different spawning medium were studied. Results showed that Harmonia axyridis preferred folding papers and leaves of cabbage as the spawning medium. Meanwhile, the statistical analysis showed that the egg-laying amount of per female in leaves of cabbage and folding papers were more than in others,and the egg hatching rates did not exist significant differences among six materials, all at around 90%. Combined with the result of storage at 25 ℃, folding paper was recommended as the best spawning medium.