Effects of exposure to the toxin Cry1Ab through Bt maize fed-prey on the performance and digestive physiology of the predatory rove beetle Atheta coriaria

García, Matías; Ortego, Félix; Castañera, Pedro; Farinós, Gema P.

doi:10.1016/j.biocontrol.2010.08.002

Cited by 37 publications

(34 citation statements)

References 44 publications

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“…Some of the authors have undertaken further studies on the potential mechanisms involved in such effects in the case of predatory rove beetles. When a commercially available rove beetle predator, Atheta coriaria Kraatz, was tested in the laboratory for its susceptibility to Cry1Ab toxin, the one tested in this study, no negative influence on the main biological parameters of the predator was found when the toxin was provided via the food web (García et al, 2010) Abundance of plant-dwelling generalist predators, such as Orius spp. and spiders, has been reported to increase occasionally in Bt maize (Jasinski et al, 2003;Musser & Shelton, 2003;de la Poza et al, 2005).…”

Section: Discussionmentioning

confidence: 81%

Post-market environmental monitoring of Bt maize in Spain: Non-target effects of varieties derived from the event MON810 on predatory fauna

Albajes

Farinós

Pérez‐Hedo

et al. 2012

Span. j. agric. res.

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The Spanish Government has established post-market environmental monitoring (PMEM) as mandatory for genetically modified (GM) crop varieties cultivated in Spain. In order to comply with this regulation, effects of Bt maize varieties derived from the event MON810 on the predatory fauna were monitored for two years in northeast and central Spain. The study was carried out with a randomized block design in maize fields of 3-4 ha on which the abundance of plant-dwelling predators and the activity-density of soil-dwelling predators in Bt vs. non-Bt near-isogenic varieties were compared. To this end, the plots were sampled by visual inspection of a certain number of plants and pitfall traps 6 or 7 times throughout two seasons. No significant differences in predator densities on plants were found between Bt and non-Bt varieties. In the pitfall traps, significant differences between the two types of maize were found only in Staphylinidae, in which trap catches in non-Bt maize were higher than in Bt maize in central Spain. Based on the statistical power of the assays, surrogate arthropods for PMEM purposes are proposed; Orius spp. and Araneae for visual sampling and Carabidae, Araneae, and Staphylinidae for pitfall trapping. The other predator groups recorded in the study, Nabis sp. and Coccinellidae in visual sampling and Dermaptera in pitfall trapping, gave very poor power results. To help to establish a standardized protocol for PMEM of genetically modified crops, the effect-detecting capacity with a power of 0.8 of each predator group is given.Additional key words: GMO; non-target arthropods; Orius spp.; Staphylinidae; Carabidae; PMEM; statistical power. Resumen Plan de Seguimiento del cultivo de maíz Bt en España: evaluación de los efectos de variedades con el evento MON810 sobre entomofauna no dianaCon el objetivo de cumplir con la legislación española que establece la obligatoriedad de un plan de seguimiento ambiental para post-comercialización (PMEM) para los cultivos modificados genéticamente, se evaluó durante dos años el efecto de variedades de maíz Bt derivadas del evento MON810 en la fauna depredadora, en el nordeste y centro de España. El estudio se realizó mediante un diseño de bloques al azar, en campos de maíz de 3-4 ha, en los cuales se comparó la abundancia/actividad de depredadores en planta y en el suelo entre variedades de maíz Bt y no-Bt. Las parcelas se muestrearon de 6 a 7 veces durante cada uno de los dos años mediante inspección visual de un número determinado de plantas y por medio de trampas de gravedad. No se observaron en general diferencias significativas en la densidad de depredadores en planta y en el suelo entre las variedades Bt y no-Bt y sólo los Staphylinidae mostraron capturas significativamente mayores en parcelas no Bt en el centro de España. En base a la potencia estadística obtenida de los análisis se proponen una serie de artrópodos indicadores para los ensayos de PMEM: Orius spp. y Araneae

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Section: Discussionmentioning

confidence: 81%

Post-market environmental monitoring of Bt maize in Spain: Non-target effects of varieties derived from the event MON810 on predatory fauna

Albajes

Farinós

Pérez‐Hedo

et al. 2012

Span. j. agric. res.

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“…Many studies have investigated the potential effect of Cry toxins on nontarget arthropods in Bt plants [35, 64–67]. …”

Section: Toxicitymentioning

confidence: 99%

Mode of Action and Specificity of Bacillus thuringiensis Toxins in the Control of Caterpillars and Stink Bugs in Soybean Culture

2014

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The bacterium Bacillus thuringiensis (Bt) produces delta-endotoxins that possess toxic properties and can be used as biopesticides, as well as a source of genes for the construction of transgenic plants resistant to insects. In Brazil, the introduction of Bt soybean with insecticidal properties to the velvetbean caterpillar, the main insect pest of soybean, has been seen a promising tool in the management of these agroecosystems. However, the increase in stink bug populations in this culture, in various regions of the country, which are not susceptible to the existing genetically modified plants, requires application of chemicals that damage the environment. Little is known about the actual toxicity of Bt to Hemiptera, since these insects present sucking mouthparts, which hamper toxicity assays with artificial diets containing toxins of this bacterium. In recent studies of cytotoxicity with the gut of different hemipterans, susceptibility in the mechanism of action of delta-endotoxins has been demonstrated, which can generate promising subsidies for the control of these insect pests in soybean. This paper aims to review the studies related to the selection, application and mode of action of Bt in the biological control of the major pest of soybean, Anticarsia gemmatalis, and an analysis of advances in research on the use of Bt for control hemipterans.

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“…2009; Higgins et al. 2009; Garcia et al. 2010; Knecht and Nentwig 2010) whereas relatively little research has been conducted on fungicidal GM wheat.…”

Section: Introductionmentioning

confidence: 99%

Food preference in the woodlouse Porcellio scaber (Isopoda) in a choice test with fungicidal GM wheat

Bigler

Nentwig

Lindfeld

2011

J Applied Entomology

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Two independent food choice experiments were conducted in the laboratory to study the effects of four transgenic and five non‐GM fungicidal wheat varieties on the food selection behaviour of the woodlouse Porcellio scaber. In general, woodlice did not avoid GM wheat as a food source and we detected no adverse effects of GM wheat on the non‐target P. scaber. Moreover, we found a food preference of the woodlouse for one of the four GM varieties, Pm3b1, but not for the closely related GM Pm3b2 or for their non‐GM isolines. We assume either a pleiotropic effect like lower lignin content or more suitable leaf litter coverage by microorganisms that may cause this preference and thus increasing palatability or digestibility. We discuss that this effect is ecologically not relevant.

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Effects of exposure to the toxin Cry1Ab through Bt maize fed-prey on the performance and digestive physiology of the predatory rove beetle Atheta coriaria

Cited by 37 publications

References 44 publications

Post-market environmental monitoring of Bt maize in Spain: Non-target effects of varieties derived from the event MON810 on predatory fauna

Post-market environmental monitoring of Bt maize in Spain: Non-target effects of varieties derived from the event MON810 on predatory fauna

Mode of Action and Specificity of Bacillus thuringiensis Toxins in the Control of Caterpillars and Stink Bugs in Soybean Culture

Food preference in the woodlouse Porcellio scaber (Isopoda) in a choice test with fungicidal GM wheat

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