Issue:ISSN 2095-1353
CN 11-6020/Q
Director:Chinese Academy of Sciences
Sponsored by:Chinese Society of Entomological;institute of zoology, chinese academy of sciences;
Address:Chaoyang District No. 1 Beichen West Road, No. 5 hospital,Beijing City,100101, China
Tel:+86-10-64807137
Fax:+86-10-64807137
Email:entom@ioz.ac.cn
Your Position ：
Home->Past Journals Catalog->
2012年49 No.4
Effects of transgenic Cry1Ac and Cry2Ab cotton on life tableparameters and population dynamics of the cotton aphid
Author of the article:
Author's Workplace：
Key Words：transgenic Cry1Ac plus Cry2Ab cotton，cotton aphids，life table，population dynamics
Abstract： The effects of transgenic Cry1Ac and Cry2Ab cotton on the life table parameters and population dynamics of the cotton aphid were studied under laboratory conditions and in cotton fields in 2010and 2011． The results show that， compared with conventional CCRI 49 cotton，net reproductive rates，intrinsic growth rates and the finite rate of increasedecreased by 81． 69%，65． 00%and 13． 01% respectively; the decrease in net reproductive rate being statisticallysignificant．The average generation cycle and population doubling time increased by 5． 54%and 154． 19%，respectively，the latter being statistically significant． Compared to conventional cotton，the numbers of seedling aphids，summer aphids and autumn aphids per 100 Cry1Ac－Cry2Abplants were 10． 79%，37． 18%and 17． 49% lower respectively in 2010，but these differences were notsignificant． Numbers of seedling aphids per 100 Cry1Ac－Cry2Ab plants in cotton fieldsincreased by 2． 03% in 2011，and numbers of summer aphids and autumn aphids per 100 Cry1Ac－Cry2Ab plantsdecreased by 37． 41%and 64． 03%respectively in 2011 but none of these differences were significant．