Return migration of Helicoverpa armigera (Lepidoptera: Noctuidae) during autumn in northern China
文献类型: 外文期刊
第一作者: Feng, H. -Q.
作者: Feng, H. -Q.;Wu, K. -M.;Cheng, D. -F.;Guo, Y. -Y.;Feng, H. -Q.;Ni, Y. -X.
作者机构:
关键词: Helicoverpa armigera;Lepidoptera;Noctuidae;China;migration
期刊名称:BULLETIN OF ENTOMOLOGICAL RESEARCH ( 影响因子:1.75; 五年影响因子:2.007 )
ISSN: 0007-4853
年卷期: 2005 年 95 卷 4 期
页码:
收录情况: SCI
摘要: The autumn migration of Helicoverpa armigera (Hubner) was observed with radar and two types of light-trap at Langfang, Hebei province, China in 2001 and 2002. The sudden increase in the proportion of H. armigera moths in the searchlight trap indicated migration into the area and catches increased 10-fold during the second half of the night due to the landing of migrants before dawn. The moths' migratory flights took place at up to 2000 m above the ground, and moths flew differentially at times, and heights, when favourable (i. e. northerly) winds occurred. This facilitated the maximum displacement of moths towards the south during these 'return' migrations. The moths flew over the radar site at consistently high densities through the night, and the resulting flight durations of c. 10h, at displacement speeds of 30-33 km h(-1), would allow moths emerging in the far northeast of China (i.e. Liaoning and Jilin provinces and the Inner Mongolia autonomous region) to migrate into northern China (Hebei, Shandong and Henan provinces). The association of the seasonal migratory movements of H. armigera with crops in northern China is briefly discussed.
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