+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Effect of transgenic Bt cotton on population dynamics of the non-target pests and natural enemies of pests



Effect of transgenic Bt cotton on population dynamics of the non-target pests and natural enemies of pests



Acta Entomologica Sinica 46(1): 1-5



Systematic investigations were carried out on the effect of transgenic Bt cotton on the population dynamic, of non-larger pests and natural enemies of pests in Hubei province in 2000 - 2001 . This experiment included three treatments. The first was a transgenic Bt cotton field that utilized pesticides to control pests (FPC) , the second was a transgenic. Bt cotton field that used natural enemies to control pests (FNEC), and the third was a normal cotton field that adopted IPM (integrated pest management ) to control pest, (FIPM ) . The results showed that the population densities of non-target pests in transgenic Bt cotton fields were obviously increased. The cumulative and peak numbers of aphids in FPC and FNEC increased by 37.9% and 71.4% , respectively, than those recorded in FIPM in 2000 and by 92.5% and 134.9% Than those recorded in FIPM in 2001 . Cumulative and peak numbers of red spider mites in FPC and FNEC increased by 181.1% and 298.3% , respectively, than those recorded in FIPM in 2000 and by 69.9% and 105.0% than those recorded in FIPM in 2001 . Transgenic Bt cotton had no obvious resistance to Prodenia infecta and tobacco whitefly, which have become more serious pests of cotton in recent year . Populations of natural energies was also significantly higher in transgenic Bt cotton fields. Cumulative and peak values of spiders in FPC and FNEC increased by 66.3% and 112.1 % , respectively, than those recorded in FIPM in 2000 and by 95. 1 %o and 111.7% than those recorded in FIPM in 2001 . Cumulative and peak values of Propylaea japonica in FPC and FNEC increased by 140.8 % and 135.4 % , respectively , than those recorded in FIPM in 2000 and by 67.2 % and 109.5 % than those recorded in FIPM in 2001 . An important natural enemy in transgenic Bt cotton fields, Geocoris pallidipennis was almost absent in normal cotton fields. These results suggest that optimizing the utilization of natural enemies in transgenic Bt cotton would be a valuable addition to the existing IPM techniques.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 003736593

Download citation: RISBibTeXText


Related references

Effect of transgenic Cry1Ac + CpTI cotton (SGK321) on population dynamics of pests and their natural enemies. Acta Entomologica Sinica 47(4): 538-542, 2004

Effects of transgenic Bt cotton and transgenic Bt+CpTI cotton on the population dynamics of main cotton pests and their natural enemies. Acta Entomologica Sinica 46(6): 705-712, 2003

Effects of transgenic Bt cotton and transgenic Bt+CpTI cotton on population dynamics of main cotton pests and their natural enemies. Acta Entomologica Sinica 46(6): 705-712, 2003

Effects of transgenic Bt cotton on population dynamics of the main pests and their natural enemies. Acta Agriculturae Universitatis Henanensis 31(4): 351-356, 1997

Effect of transgenic Bt cotton on population of cotton pests and their natural enemies in Xinjiang. Chinese Journal of Biological Control ust; 18(3): 106-110, 2002

Effects of early seasonal strain of Bt transgenic cotton on population dynamics of main pests and their natural enemies. Acta Gossypii Sinica 10(5): 255-262, 1998

Natural population dynamics of the pests and natural enemies in the cotton field and the effect of pesticides on the natural enemies. Entomological Knowledge 232: 75-78, 1986

Composition of pests and natural enemies and dynamics of dominant groups in transgenic Bt cotton fields. Cotton Science 17(4): 222-226, 2005

Population dynamics of insect pests and some of their natural enemies and their correlation with weather parameters on Bt cotton. Indian Journal of Agricultural Sciences 84(5): 572-578, 2014

Impacts of transgenic insect-resistance hybrid poplar 741 on the population dynamics of pests and natural enemies. Acta Ecologica Sinica ; 26(10): 3491-3498, 2006

Edge effect on the dynamics of pests and natural enemies in cotton agroecosystems. Ying Yong Sheng Tai Xue Bao 15(1): 91-94, 2004

Effects of transgenic Bt cotton on main pests and community of natural enemies in cotton fields. Xinjiang Agricultural Sciences 41(5): 345-347, 2004

Impact of Bt transgenic cottons and insecticides on target and non-target insect pests, natural enemies and seedcotton yield in India. Indian Journal of Agricultural Sciences 82(3): 248-254, 2012

Effect of transgenic Bt cotton GK22 on the population dynamics of the insect pests and weeds in Jiangsu cotton region. Entomological Journal of East China 11(2): 46-52, 2002

Effect of transgenic Bt cotton on the population dynamics of natural enemies. Acta Gossypii Sinica 11(2): 84-91, 1999