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      EVALUACION DE CEPAS NATIVAS DE Metarhizium anisopliae var. anisopliae SOBRE Otiorhynchus sulcatus Fab. (COLEOPTERA: CURCULIONIDAE) Translated title: Evaluation of Chilean strains of Metarhizium anisopliae var. anisopliae against Otiorhynchus sulcatus Fab. (Coleoptera: Curculionidae)

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          Abstract

          Se evaluó en laboratorio la patogenicidad de tres aislamientos de Metarhizium anisopliae var. anisopliae sobre el gorgojo de la frutilla (Otiorhynchus sulcatus). Los aislamientos fueron aplicados en concentraciones crecientes (0 a 10(8) conidias mL-1) sobre larvas en el último estadío de desarrollo. Se evaluó durante 20 días la mortalidad de larvas, calculándose la concentración letal CL50 y CL90 , y la tasa de mortalidad. La tasa de mortalidad a distintas concentraciones fue distinta para los tres aislamientos (P<= 0,01). La CL50 y CL90 para el aislamiento más agresivo, fue de 10(6) y 10(8) respectivamente. Futuros estudios a nivel de campo permitirán determinar el potencial de este hongo como agente de control biológico de O. sulcatus en Chile.

          Translated abstract

          The pathogenicity of three isolates of Metarhizium anisopliae var. anisopliae against the black vine weevil (Otiorhynchus sulcatus) was evaluated in a laboratory test. The isolates were applied in increasing concentrations (0 to 10(8) conidia mL-1) to the last instar larvae. Larval mortality was evaluated for 20 days, and lethal concentration LC50 LC90, and mortality rates were calculated. The three isolates varied (P<= 0.01) in the rate of mortality at different concentrations. The LC50 and LC90 for the most virulent isolate were about 10(6) and 10(8) conidia mL-1, respectively. Future field studies will determine the potential of this fungus as a biological control agent for Otiorhynchus sulcatus in Chile.

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          Most cited references 17

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          Statistical procedures for agricultural research

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            Entomología Económica.: Insectos de Interés Agrícola, Forestal, Médico y Veterinario.

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              Biological Control of Insect Pests by Entomogenous Fungi

               P Ferron (1977)
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                agrtec
                Agricultura Técnica
                Agric. Téc.
                Instituto de Investigaciones Agropecuarias, INIA (Chillán )
                0365-2807
                July 2000
                : 60
                : 3
                : 216-223
                Affiliations
                [1 ] Instituto de Investigaciones Agropecuarias Chile
                [2 ] Instituto de Investigaciones Agropecuarias Chile
                Article
                S0365-28072000000300002
                10.4067/S0365-28072000000300002
                Product
                Product Information: website
                Categories
                AGRONOMY

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