{"id":7672,"date":"2026-06-17T21:55:23","date_gmt":"2026-06-17T21:55:23","guid":{"rendered":"https:\/\/pawel.stefanoff.pl\/bugs\/?p=7672"},"modified":"2026-07-23T16:41:01","modified_gmt":"2026-07-23T16:41:01","slug":"2026-06-global-journey-of-the-diamondback-moth-es","status":"publish","type":"post","link":"https:\/\/pawel.stefanoff.pl\/bugs\/es\/posts\/2026-06-global-journey-of-the-diamondback-moth-es\/","title":{"rendered":"Desarmando la bomba de mostaza: El viaje global de la polilla dorso de diamante"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Les presento a la palomilla dorso de diamante (<em>Plutella xylostella<\/em>), un diminuto insecto que figura como una de las plagas agr\u00edcolas m\u00e1s devastadoras del planeta. Llamada as\u00ed por el patr\u00f3n de rombos de color crema en su dorso, esta especie causa miles de millones de d\u00f3lares en p\u00e9rdidas anuales en cultivos de brasic\u00e1ceas como la col y la colza. Estas plantas se defienden liberando compuestos t\u00f3xicos al ser masticadas, una defensa qu\u00edmica conocida como la &#8220;bomba de aceite de mostaza&#8221;. Sin embargo, las orugas de esta polilla han desarrollado una enzima intestinal especializada que neutraliza las toxinas, desarmando por completo a la planta. Con apenas el tama\u00f1o de dos granos de arroz, estas formidables voladoras pueden aprovechar las corrientes de aire para recorrer m\u00e1s de 3000 kil\u00f3metros en migraciones transcontinentales. Adem\u00e1s, son famosas por ser el primer insecto en desarrollar resistencia a varios insecticidas generalizados. Durante mi cicloviaje por el norte de Suecia en junio 2026, fui testigo de la enorme magnitud de su capacidad reproductiva, encontr\u00e1ndome con cientos de estas peque\u00f1as y resistentes polillas cada tarde.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les presento a la palomilla dorso de diamante (Plutella xylostella), un diminuto insecto que figura como una de las plagas 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