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Toxicology

Effects of Bt cry1Ah corn pollen on immature worker survival and development of Apis cerana cerana

Efectos del polen de maíz Bt cry1Ah en la supervivencia y desarrollo de obreras inmaduras de Apis cerana cerana

, , , , , , , & show all
Pages 72-76 | Received 28 Nov 2012, Accepted 04 Aug 2013, Published online: 25 Jul 2015
 

Abstract

The honey bee may be exposed to insecticidal proteins from transgenic plants via pollen. An assessment of the impact of such exposures on the honey bee is an essential part of the risk assessment process for transgenic Bacillus thuringiensis (Bt) corn. The effects of dietary transgenic Bt corn pollen on honey bee immature workers of Apis cerana cerana were examined by feeding trials in colonies. Four- to six-day-old honey bee worker larvae were fed various pollens (cry1Ah corn pollen, regular corn pollen, mixed bee pollen and control) and then sampled to record their survival and development. There were no significant differences in capping rate, emergence rate and immature stage among treatments. Our studies suggest that cry1Ah corn pollen carries no risk for the survival and development of A. c. cerana immature workers.

Las abejas podrían estar expuestas a las proteínas de insecticidas de plantas transgénicas a través de su polen. Por ello, la valoración del impacto de dicha exposición es esencial para entender el riesgo que supone para las abejas el maíz transgénico Bacillus thuringiensis. El efecto dietético del polen del maíz transgénico Bt en las obreras inmaduras de Apis cerana cerana fue examinado mediante ensayos de alimentación en colonias. Se alimentaron larvas de obreras de entre 4 y 6 días con varios tipos de polen (polen de maíz cry1Ah, polen de maíz normal, mezcla de polen de abeja y un control), luego fueron muestreadas para registrar los datos de supervivencia y desarrollo. No se encontraron diferencias significativas en las tasas de operculamiento, emergencia y nivel de inmadurez entre los tratamientos. Por tanto, el estudio sugiere que el polen del maíz cry1Ah no supone un riesgo para la supervivencia y desarrollo de las obreras inmaduras de Apis cerana cerana.

Additional information

Funding

This research was supported by the National Natural Science Foundation of China [grant no. 31201857]; the Major State Basic Research Development Program of China [grant no. 2007CB109203] and the Fund for Modern Agro-industry Technology Research System [grant no. nycytx-43-kxj6].

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