Resumo

GARCIA-MENDEZ, Víctor H.; ORTEGA-ARENAS, Laura D.; VILLANUEVA-JIMENEZ, Juan A.  e  SANCHEZ-ARROYO, Hussein. Susceptibility of Diaphorina citri Kuwayama (Hemiptera: liviidae) to insecticides, in Veracruz, Mexico. Agrociencia [online]. 2016, vol.50, n.3, pp.355-365. ISSN 2521-9766.

The management of the citrus bacterial disease Huanglongbing (HLB) is more effective when focused on the control of the insect vector in Regional Control Areas (RCA). To support the regional management strategy of insecticides, susceptibility of two Diaphorina citri populations to the insecticides endosulfán, dimethoate, imidacloprid, malathion, methomyl, abamectin and lambda-cyhalothrin was determined. Imidacloprid formulated as a commercial product was evaluated by systemic absorption in orange seedlings (Citrus sinensis L.) cv. Valencia. The other technical grade formulated products were evaluated by topical application in dilutions with acetone. Mortality was registered 24 һ after applying the insecticides. For each product the LD50 or LC50 was obtained through Probit analysis and the resistance factor was calculated. Cazones colony was susceptible to the seven insecticides evaluated, thus these values are proposed as a baseline for monitoring resistance. Martinez population also showed susceptibility to abamectin, endosulfán, lambda-cyhalothrin, imidacloprid and malathion, and resistance to dimethoate (87.52 X) and methomyl (83.58 X).

Palavras-chave : Diaphorina citri; citrus; chemical control; HLB; Asian citrus psyllid; resistance.

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