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      The avocado fruit borer, Stenoma catenifer (wals.) (Lepidoptera: elachistidae): egg and damage distribution and parasitism Translated title: A broca-do-abacate, Stenoma catenifer (wals.) (Lepidoptera: elachistidae): distribuição de ovos e de danos e parasitismo

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          Abstract

          The avocado fruit borer, Stenoma catenifer (Wals.) has been a limiting factor in growing avocados over the last years in many Brazilian states. This is a result of the lack of safe and feasible management practices to minimize the fruit borer damage. The aim of this study was to obtain information on the pest biology and ecology as well as on the role of natural enemies to define strategies to control the pest. Samples were taken biweekly and consisted of 20 fruits collected randomly (10 from the upper half and 10 from the lower half of the plant) in ten plants, cv. Margarida, in a commercial avocado grove in Arapongas and Cambé regions, PR, from October/2001 to September/2002. Laboratory determinations of the percentage of damaged fruit per plant region, location and number of bored fruit sites, and the number and location of the fruit borer eggs, including parasitized ones, were performed. The results showed that S. catenifer preferred to oviposit and attack fruits located on the upper half of the trees. The majority of the eggs were laid on the fruit pedicel whereas the damage was mainly located on the lower half of the fruits. Trichogrammatids were the most constant and abundant parasitoids found in both localities throughout the study period.

          Translated abstract

          A broca-do-abacate, Stenoma catenifer (Lepidoptera: Elachistidae), continua sendo fator limitante para o cultivo do abacate em vários estados do Brasil, nos últimos anos. Isso se deve a falta de métodos seguros e viáveis para reduzir os prejuízos causados pela praga. Com o intuito de obter informações sobre a sua bioecologia e ação de inimigos naturais, para auxiliar na elaboração de estratégias de controle, realizaram-se coletas quinzenais de 20 frutos ao acaso (10 da metade superior e 10 da metade inferior) em 10 plantas, em pomar comercial, cv. Margarida, nos municípios de Arapongas e Cambé, PR, durante os meses de outubro/2001 a setembro/2002. Em laboratório determinaram-se a porcentagem de frutos atacados por estrato da planta, local e número de orifícios de penetração da broca e o número e local das posturas nos frutos, incluindo ovos parasitados. Ficou evidenciada uma preferência para oviposição, e consequentemente de ataque, de S. catenifer pelo estrato superior das plantas nas duas localidades. Apesar de o local preferido para postura ser o pedúnculo, a maioria dos danos concentrou-se na parte inferior dos frutos. Parasitóides da família Trichogrammatidae foram constantes e abundantes em ambos pomares durante o período em que se realizou o estudo.

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          Diagnóstico e Prognóstico da Ocupação e Impermeabilização Urbanas

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            Introduction to Integrated Pest Management

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              Introduction to insect pest management

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rbf
                Revista Brasileira de Fruticultura
                Rev. Bras. Frutic.
                Sociedade Brasileira de Fruticultura (Jaboticabal )
                1806-9967
                December 2003
                : 25
                : 3
                : 432-435
                Affiliations
                [1 ] Instituto Agronômico do Paraná Brazil
                [2 ] UNIFIL Brasil
                [3 ] IAPAR
                Article
                S0100-29452003000300018
                10.1590/S0100-29452003000300018
                53f86296-6e2c-490d-bcb6-26e294fdc5dc

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0100-2945&lng=en
                Categories
                HORTICULTURE

                Horticulture
                Insecta,ecology,biological control,Persea americana,ecologia,controle biológico
                Horticulture
                Insecta, ecology, biological control, Persea americana, ecologia, controle biológico

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