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Development, survival, and fecundity of the beet armyworm on Bt and non-Bt cotton

机译：BT和非BT棉花甜菜羊虫的开发，生存和繁殖力

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Development, survival, and fecundity of beet armyworm (BAW) were determined on Bt and non-Bt cotton. The following treatments were established: 1) conventional-conventional, 2) conventional-transgenic, 3) transgenic-conventional, and 4) transgenic-transgenic, which resulted from the combination of two collection sources of BAW larvae (conventional and transgenic cotton) and two diets for feeding their offspring in the laboratory (conventional variety DP 5690 and transgenic variety NuCOTN 35B). BAW growth, survival and fecundity were negatively affected by the Bt toxin contained in transgenic cotton. Larval weight and size, as well as pupal weight, were reduced by the toxin. Developmental times were similar on Bt and non-Bt cotton. Larvae survival decreased from 72 percent in insects not exposed to the Bt toxin to 26 percent in those fed on cotton leaves with or without the toxin, whose parents were exposed to it. Only when parents and their offspring were exposed to the toxin, a reduction of fecundity occurred.
机译：在BT和非BT棉花上测定甜菜陆虫（BAW）的发育，存活和繁殖力。确定以下处理：1）常规 - 常规，2）常规 - 转基因，3）转基因 - 常规和4）转基因转基因，其是由两种收集幼虫（常规和转基因棉）的组合来源的组合和用于在实验室（常规品种DP 5690和转基因种类NUCOTN 35B）中喂养其后代的两种饮食。 BAW生长，生存和繁殖量受转基因棉中包含的BT毒素的负面影响。毒素还减少了幼虫重量和粒度，以及蛹重量。在BT和非BT棉上的发育时间相似。幼虫生存期从未暴露于毒素的昆虫中的72％从棉花叶片的昆虫中暴露于26％，其父母暴露于它。只有当父母及其后代暴露于毒素时，才会发生繁殖力的减少。

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