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      Entomopathogenic nematodes for the control of phorid and sciarid flies in mushroom crops Translated title: Nematoides entomopatogênicos no controle de moscas Phoridae e Sciaridae em cultivo de cogumelos

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          Abstract

          The objective of this work was to evaluate the efficacy of two nematodes, Steinernema feltiae and S. carpocapsae, to control mushroom flies and to evaluate the effect of these treatments on Agaricus bisporus production. Two mushroom cultivation trials were carried out in controlled conditions, in substrate previously infested with the diptera Megaselia halterata and Lycoriella auripila, with two treatments: 106infective juveniles (IJ) per square meter of S. feltiae and 0.5x106IJ m-2S. feltiae + 0.5x106IJ m-2S. carpocapsae. Another experiment was carried out using the same treatments to evaluate the possible nematode effect on mushroom yield. The number of adults emerging from the substrate was evaluated for each fly species. No decrease in the population of M. halterata was detected with nematode application, whereas the number of L. auripila was reduced in both treatments, particularly in the individual treatment with S. feltiae. The application of entomopathogenic nematodes has no adverse effect on mushroom production.

          Translated abstract

          O objetivo deste trabalho foi avaliar a eficiência de dois nematoides, Steinernema feltiae e S. carpocapsae, no controle de moscas dos cogumelos e avaliar o efeito desses tratamentos na produção de Agaricus bisporus. Foram realizados dois ensaios de cultivo de cogumelos em condições controladas, em substrato previamente infestado pelos dípteros Megaselia halterata e Lycoriella auripila, com dois tratamentos: 106juvenis infectantes (IJ) por metro quadrado de S. feltiae e 0,5x106IJ m-2 de S. feltiae+ 0,5x106IJ m-2 de S. carpocapsae. Foi realizado outro experimento, com uso dos mesmos tratamentos, para avaliar o possível efeito dos nematoides sobre a produção dos cogumelos. Avaliou-se o número de adultos que emergiram no substrato, para cada espécie de mosca. Não foi detectada redução da população de M. halteratacom a aplicação de nematoides, enquanto o número de L.auripila foi reduzido em ambos os tratamentos, particularmente no tratamento individual com S. feltiae. A aplicação de nematoides entomopatogênicos não tem efeito adverso na produção de cogumelos.

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          Biological control of Lycoriella ingenua (Diptera: Sciaridae) in commercial mushroom (Agaricus bisporus) cultivation: a comparison between Hypoaspis miles and Steinernema feltiae.

          Mushroom cultivation may be adversely affected by insect pests, including sciarids (Lycoriella spp.), which were previously controlled by application of chemical pesticides. However, owing to food safety and environmental concerns, availability of pesticides for use during mushroom cultivation has diminished. Consequently, it is imperative to investigate alternative control strategies, not reliant on chemical pesticides, which may be used in an integrated pest management system.
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            Biological control of sciarid and phorid pests of mushroom with predatory mites from the genus Hypoaspis(Acari: Hypoaspidae) and the entomopathogenic nematode Steinernema feltiae.

            In small-scale experiments, the predatory mites, Hypoaspis aculeifer (Canestrini) and H. miles Berlese, applied at 700 mites m(-2), and the entomopathogenic nematode, Steinernema feltiae (Filipjev) applied at 3 x 10(-6) nematodes m(-2) controlled sciarids and phorids in mushroom compost and casing substrates. For both mite species, earliest application to the growing substrate following sciarid infestation reduced sciarid emergence. In contrast, later application of each biological control agent provided more effective control of phorid emergence. The behaviour of adult mites suggested that H. aculeifer were more positively geotactic than H. miles although both species could penetrate compost and casing substrates to a depth of 2-12 cm. A majority of S. feltiae nematodes resided at a depth of 2-4 cm in both substrate types. Independent application of H. aculeifer provided more comprehensive control of sciarids and phorids than the other biological agents studied, owing to its better dispersal within compost and casing, and ability to attack larvae of differing ages.
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              Steinernema carpocapsae(Rhabditida: Steinernematidae) as a biological control agent against the fungus GnatBradysia agrestis(Diptera: Sciaridae) in propagation houses

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Journal
                pab
                Pesquisa Agropecuária Brasileira
                Pesq. agropec. bras.
                Embrapa Informação Tecnológica (Brasília )
                1678-3921
                January 2014
                : 49
                : 1
                : 11-17
                Affiliations
                [1 ] Centro de Investigación, Experimentación y Servicios del Champiñón Spain
                Article
                S0100-204X2014000100003
                10.1590/S0100-204X2014000100002
                2e7cb350-9477-40ea-ba8c-390cb6d5f730

                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=0100-204X&lng=en
                Categories
                AGRICULTURE, DAIRY & ANIMAL SCIENCE
                AGRICULTURE, MULTIDISCIPLINARY

                Animal agriculture,General agriculture
                Agaricus bisporus,Lycoriella auripila,Megaselia halterata,Steinernema carpocapsae,Steinernema feltiae,biological control,controle biológico

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