Bai Y Y, Yan R H, Ye G Y, Huang F N, Cheng J A
Institute of Insect Sciences, Zhejiang University, Hangzhou, China.
Environ Entomol. 2010 Feb;39(1):243-51. doi: 10.1603/EN09149.
During 2005-2008, field studies were conducted at two locations in Chongqing, China, to assess the potential effects of transgenic rice expressing Bacillus thuringiensis (Bt) Cry1Ab protein on the nontarget ground-dwelling collembolan community in three postharvest seasons. Collembolans in non-Bt and Bt rice fields were sampled with pitfall traps during each of two postharvest seasons of 2005/2006 and 2006/2007 and litterbag traps during each of three postharvest seasons of 2005/2006, 2006/2007, and 2007/2008. Ground-dwelling collembolans in rice fields during the postharvest seasons were abundant, whereas community densities varied considerably between the two locations and among the three seasons. A total of 67,310 collembolans, representing three species, Entomobrya griseoolivata, Hypogastrura matura, and Bourletiella christianseni, were captured during the three postharvest seasons. E. griseoolivata was the predominant species, accounting for 87.7% of the total captures, followed by H. matura (10.7%) and B. christianseni (1.6%). In general, there were no significant differences in species compositions and abundances of each species between Bt and non-Bt paddy fields, suggesting no significantly impact of plant residues of Cry1Ab rice on collembolan communities during postharvest seasons.
2005年至2008年期间，在中国重庆的两个地点开展了田间研究，以评估表达苏云金芽孢杆菌（Bt）Cry1Ab蛋白的转基因水稻在三个收获后季节对非靶标土壤弹尾目昆虫群落的潜在影响。在2005/2006年和2006/2007年的两个收获后季节，用陷阱诱捕器对非Bt稻田和Bt稻田中的弹尾目昆虫进行采样；在2005/2006年、2006/2007年和2007/2008年的三个收获后季节，用凋落物袋诱捕器进行采样。收获后季节稻田中的土壤弹尾目昆虫数量丰富，然而两个地点之间以及三个季节之间群落密度差异很大。在三个收获后季节共捕获了67310只弹尾目昆虫，分属于三个物种，即灰橄榄长角跳虫、成熟原等节跳虫和克里斯蒂安氏球角跳虫。灰橄榄长角跳虫是优势物种，占捕获总数的87.7%，其次是成熟原等节跳虫（10.7%）和克里斯蒂安氏球角跳虫（1.6%）。总体而言，Bt稻田和非Bt稻田之间的物种组成和各物种丰度没有显著差异，这表明收获后季节Cry1Ab水稻的植物残体对弹尾目昆虫群落没有显著影响。
