lunes, octubre 17, 2005

Afectada la vida silvestre


Los resultados de una serie de estudios sobre cultivos transgénicos realizados en el Reino Unido por la Royal Society han confirmado el impacto nocivo de las variedades resistentes a herbicidas sobre la flora y la fauna silvestre.

En 1999 el gobierno británico encargó a un equipo de investigadores independientes un estudio de las repercusiones de los cultivos transgénicos resistentes a los herbicidas sobre la vida silvestre, con el fin de disponer de datos fiables para su evaluación, y tomar decisiones si se debe permitir o no la introducción de cultivos transgénicos en el país.

Los investigadores estudiaron 4 cultivos maíz, remolacha, canola de invierno y canola de primavera. Ellos compararon la abundancia de vida silvestre asociada con ecosistemas agrícolas en campos sembrados con variedades convencionales y transgénicas (con resistencia a herbicidas). Los cultivos transgénicos de maíz, canola de primavera y canola de invierno, estaban manipulados para ser resistente al herbicida de amplio espectro Liberty (glufosinato de amonio) de Bayer Crop Science. La variedad transgénica de remolacha era resistente al herbicida de amplio espectro Roundup (glifosato) de Monsanto.

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