To reasonablly predict the population dynamics of Italian locust Calliptamus italicus,female 5th instar nymphs were fed food containing 1％ (CK),4％,and 7％ nitrogen. The growth rate of the 5th instar nymphs was measured,along with body length,femoral length,tibia length,wing length,wing width,and body weight of locusts on the 7th day post-emergence. Additionally,the ovarian area was measured on days 1,7,13,and 19 post-emergence following the different nitrogen treatments. Results showed that the growth rate of individuals in the 4％ nitrogen group was the highest,increasing by 88.02％ and 109.33％ compared to the 1％ and 7％ nitrogen groups,respectively. The hind wing width and body weight of adult locusts in the 4％ and 7％ nitrogen groups were significantly higher than those in the CK group. On the 7th day post-emergence,the ovarian area of C. italicus differed significantly among the different nitrogen content groups. By the 19th day post-emergence,the ovarian area in the 4％ nitrogen group was significantly higher than that in the other two groups. These results indicated that a moderate nitrogen content (4％ nitrogen) is suitable for the growth of C. italicus.
nitrogen contentCalliptamus italicusgrowth and developmentbody sizeovarian area
维普
万方数据
