Search Results for: Ladybird

Abstract: Insect-active Bacillus thuringiensis (Bt) proteins are expressed by several transgenic crop plants to control certain pests, but nontarget organisms such as ladybirds also can be exposed to these proteins in the field. We developed an improved ecotoxicity testing protocol and conducted feeding trials in a laboratory setting to test for possible adverse effects of …

Abstract: In the past 10 years, sequestration of Cry toxins and transfer to offspring has been indicated in three insect species in laboratory studies. This work directly demonstrates the sequestration and intergenerational transfer of Cry1F by the parents of the aphidophagous coccinellid predator, Harmonia axyridis, to its offspring. Recently emerged adults (10 individual couples/cage/treatment) were …

Text: Maize or cotton pollen from Bt transgenic plants has been shown not to harm Coleopterans (ladybirds) and Hymenopterans(honeybees and bumblebees), even when they are exposed to large amounts of the anti-lepidopteran Bt maize or cotton pollen (Malone and Pham-Dèlègue, 2001; Hanley et al., 2003). Hanley et. al. (2003) suggested that the Bt pollen could …

Text: Widespread distribution of genetically modified organisms (GMO) causes great biological risks for human and the Environment. Three kind of biological risks are described usually: ecological, nutrition and agrotechnical. The term genetically modified organisms (GMOs) refers to plants, microbes and animals with genes transferred from other species in order to produce certain novel characteristics (for …