Toxicidade da combinação de dióxido de carbono e fosfina sob diferentes temperaturas para Tribolium castaneum

Aguiar, Raimundo Wagner Souza; Faroni, L. R. D.; Guedes, Raul Narciso C.; Sousa, Adalberto Hipólito de; Rozado, Adriano F.

doi:10.1590/s1415-43662010000800013

Cited by 7 publications

(6 citation statements)

References 26 publications

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“…In an attempt to simulate the physical conditions of a storage structure are used glassware and recipients that facilitate handling in the laboratory, observing (at the time of its selection) conditions such as material used (glass bottle/jar, Petri-dish, plastic pot/recipient, raffia bag), size of the recipient/arena (height, width, length, diameter), information which can be confirmed in several studies (Aguiar et al, , 2010Beckel et al, 2005;Belchol and Teixeira, 2007;Fontes and Arthur, 1994;Gonçalves et al, 2006Gonçalves et al, , 2007Moino Junior and Alves, 1997;Oliveira et al, 2003Oliveira et al, , 2006Pereira et al, 2003;Silva et al, 2003).…”

Section: Introductionmentioning

confidence: 96%

“…Both species, R. dominica and T. castaneum are the reasons for studies seeking to evaluate responses to the use of insecticides (Aguiar et al, 2010;Furiatti et al, 1999;Pereira et al, 1997Pereira et al, , 2003Pimentel et al, 2012;Pinto Junior et al, 1997;Santos et al, 2011), control measures (Gonçalves et al, 2000(Gonçalves et al, , 2007Mariano et al, 2006), forms of repellency (Beckel et al, 2004(Beckel et al, , 2005Parvin et al, 2012) and damage caused (Alencar et al, 2011;Silva et al, 2003). In general, these studies present the common fact that they are conducted under simulated conditions in the laboratory, testing the species in the different situations observed in the storage units.…”

Section: Introductionmentioning

confidence: 99%

“…Rhyzopertha dominica and T. castaneum have been studied under different climatic conditions, with variations as needed (Aguiar et al, , 2010Beckel et al, 2005;Fontes and Arthur, 1994;Gonçalves et al, 2006Gonçalves et al, , 2007Moino Junior and Alves, 1997;Oliveira et al, 2003Oliveira et al, , 2006Silva et al, 2003), and care with the method of simulating the physical structure of the storage unit should be taken into consideration so that the results may express the condition closest to the actual condition (Beckel et al, 2005;Gonçalves et al, 2006Gonçalves et al, , 2007Ortiz et al, 2012;Pacheco et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Walking stability of Rhyzopertha dominica (Fabricius, 1792) (Coleoptera: Bostrichidae)

et al. 2016

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Results obtained in studies can contribute to the advancement of science and innovative methods and techniques for developing practical activities. Reporting conditions that may restrict the implementation of research is critical to ensure the optimal development of further technical studies. The objective of this study was to assess the walking stability of R. dominica on a flat and smooth surface. The study was based on the determination of mortality, morphology and walking stability of the insect outside the grain mass, on a flat and smooth surface. Mortality of adults of this Coleoptera in conditions with and without food was similar, which explains the difficulty that this insect had for accessing the food source on the flat and smooth surface. The measurements of body length (BOL), width (BOW) and height (BOH) of R. dominica were compared with those of Tribolium castaneum (Coleoptera: Tenebrionidae), which showed good ability to walk in these conditions. This study indicated that the former presents lower BOL and BOW, and greater BOH than the second, and all these variables showed differences when analyzed simultaneously by means of the construction of multivariate morphometric indices (Width × Height, Length × Height and Height × Length × Width). These morphometric variables, together with the definition of the geometry most similar to the body shape, resulted in determination of the center of gravity (CG) and static rollover threshold (SRT geom ) for both species. Rhyzopertha dominica and T. castaneum presented CGs considered high and low, respectively, and together with the values obtained for SRT geom , may justify that R. dominica can be considered a less stable species during movement, and presents greater risk of rollover on flat and smooth surfaces.Keywords: bioassays, center of gravity (CG), coefficient of friction, rollover, grain pests. Estabilidade de caminhamento de Rhyzopertha dominica (Fabricius, 1792)(Coleoptera: Bostrichidae) ResumoResultados obtidos em pesquisas podem contribuir com o avanço da ciência e inovar métodos e técnicas para o desenvolvimento de atividades práticas. Relatar condições que podem restringir à execução de pesquisas é fundamental para garantir que seja observada a técnica ideal para o desenvolvimento de estudos posteriores. O objetivo deste trabalho foi estudar a estabilidade de caminhamento de R. dominica em superfície plana e polida. O estudo se baseou na determinação da mortalidade, morfologia e estabilidade de caminhamento do inseto fora da massa de grãos, em superfície plana e polida. A mortalidade dos adultos desse Coleoptera nas condições com e sem alimento foram semelhantes, o que justifica a dificuldade que esse inseto tem em acessar a fonte alimentar andando em superfície plana e polida. As medidas obtidas do comprimento (BOL), largura (BOW) e altura (BOH) do corpo de R. dominica foram comparadas com as de Tribolium castaneum (Coleoptera: Tenebrionidae), que pode ser considerado um bom caminhador nessas condições. Esse estudo mostrou que o primeiro ...

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Walking stability of Rhyzopertha dominica (Fabricius, 1792) (Coleoptera: Bostrichidae)

et al. 2016

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“…The Sitophilus zeamais Mots. (Coleoptera: Curculionidae) is a major corn pest and its by products are found in virtually all storage and processing facilities of Brazil (Aguiar et al, 2010;Conceição et al, 2012). This insect is controlled by pyrethroid and organophosphate insecticides (Guedes et al, 2008) and phosphine fumigant (Sousa et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Bioactivity of diatomaceous earth to Sitophilus zeamais (Coleoptera: Curculionidae) in different application conditions

Sousa¹,

Faroni²,

Andrade

et al. 2013

Rev. bras. eng. agríc. ambient.

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The objective of this study was to evaluate the insecticidal activity of diatomaceous earth (DE) at different ambient temperatures on adult Sitophilus zeamais and progeny, using different doses and exposure periods. The experiments were performed in Petri dishes containing 40 g of the whole corn kernel, treated with DE at doses of 0, 0.25, 0.5 and 1.0 kg Mg -1 . Each dish was infested with 25 S. zeamais adults and kept at climatic chambers under temperatures of 20, 25, 30, 35 and 40 o C. The insect mortality was recorded after six and 15 days from the beginning of the bioassays. The grains evaluated at 15 days were separated from insects and kept in the dishes for another 75 days under the same temperature conditions. After this period the effect of ambient temperature and of diatomaceous earth doses on the emergence of S. zeamais in the F 1 generation was evaluated. It was found that the mortality of S. zeamais increased with the higher dose and temperature during the exposure period of six and 15 days. The number of insects emerged reduced with increasing temperature in these two exposure periods. The increase of temperature and exposure period favored the efficacy of DE in lower doses for control of S. zeamais.Key words: corn weevil, inert dusts, storage, insect control Bioatividade da terra de diatomácea para Sitophilus zeamais (Coleoptera: Curculionidae) em diferentes condições de aplicação RESUMO O objetivo deste trabalho foi avaliar a atividade inseticida da terra de diatomácea (TD) em diferentes temperaturas ambiente sobre adultos de Sitophilus zeamais e sua progênie, utilizando-se diferentes doses e períodos de exposição. Os experimentos foram realizados em placas de Petri contendo 40 g de grãos inteiros de milho, tratados com TD nas doses de 0; 0,25; 0,5 e 1,0 kg Mg -1 . Cada placa foi infestada com 25 adultos de S. zeamais e mantida em câmaras climáticas nas temperaturas de 20, 25, 30, 35 e 40 °C. A mortalidade dos insetos foi contabilizada após seis e 15 dias do início dos bioensaios. Os grãos avaliados aos 15 dias foram separados dos insetos e mantidos nas placas por mais 75 dias sob as mesmas condições de temperatura. Após este período avaliou-se o efeito da temperatura ambiente e das doses da TD sobre a emergência de S. zeamais na geração F 1 . Verificou-se que a mortalidade de S. zeamais aumentou com o incremento da dose e da temperatura nos períodos de exposição de seis e 15 dias; já o número de insetos emergidos reduziu com o aumento da temperatura nesses dois períodos de exposição. O aumento da temperatura e do período de exposição favoreceu a eficácia da TD em menores doses, para controle de S. zeamais.Palavras-chave: gorgulho-do-milho, pós-inertes, armazenamento, controle de insetos

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“…The species Rhyzopertha dominica (F.) (Coleoptera: Bostrichidae) and Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae) are important pests of wheat grain and its byproducts. They are found in virtually all storage and processing units of Brazil (Pereira, et al, 2008;Aguiar et al, 2010). The control of these insects is done with the use of protective insecticides, organophosphates and pyrethroids and the fumigant aluminum phosphide Silveira et al, 2009;Sousa et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Diatomaceous earth effects on weevils with different susceptibility standard to phosphine

Conceição¹,

Faroni²,

Sousa³

et al. 2012

Rev. bras. eng. agríc. ambient.

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A B ST R A C TThe aim of this study was to evaluate the insecticide activity of diatomaceous earth (DE), at different temperatures, on two populations of Tribolium castaneum and Rhyzopertha dominica previously diagnosed as resistant and susceptible to phosphine. The efficiency of DE in the control of the insects was evaluated at temperatures of 20, 25, 30, 35 and 40 ± 2 ºC. The experiments were accomplished in Petri dishes containing 35 g of whole-wheat grain treated with DE in the dose of 1.0 kg t -1. The control was constituted by untreated wheat grain. Each Petri dish was infested with 30 adult insects. Insect mortality was registered seven days after the beginning of the bioassays. The experiment was conducted in a completely randomized design with three replications. The populations of T. castaneum and R. dominica, respectively, resistant and susceptible to phosphine have similar susceptibility patterns. The mortality of two populations of T. castaneum increased with increasing temperature. For R. dominica, the mortality did not change with the temperature. Key words: Tribolium castaneum, Rhyzopertha dominica, alternative controlEfeito da terra de diatomácea sobre carunchos com diferentes padrões de susceptibilidade à fosfina R ESU M O O objetivo deste trabalho foi avaliar a atividade inseticida da terra de diatomácea (TD), em diferentes temperaturas, em relação a duas populações de Tribolium castaneum e Rhyzopertha dominica previamente diagnosticadas como resistentes e susceptíveis à fosfina. A eficiência da TD foi avaliada nas temperaturas de 20, 25, 30, 35 e 40 ± 2 ºC e os experimentos foram realizados em placas de Petri contendo 35 g de grãos inteiros de trigo, tratados com TD na dose de 1,0 kg t -1. O controle foi constituído de grãos de trigo não tratados; ressalta-se que cada placa de Petri foi infestada com 30 insetos adultos, cuja mortalidade foi contabilizada sete dias após o início dos bioensaios. O delineamento experimental utilizado foi o inteiramente casualizado, com três repetições. As populações de T. castaneum e R. dominica, respectivamente, resistentes e susceptíveis à fosfina apresentaram padrões de susceptibilidade semelhantes; por outro lado, a mortalidade das duas populações de T. castaneum aumentou com a elevação da temperatura embora para R. dominica a mortalidade não tenha variado com a temperatura.

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Toxicidade da combinação de dióxido de carbono e fosfina sob diferentes temperaturas para Tribolium castaneum

Cited by 7 publications

References 26 publications

Walking stability of Rhyzopertha dominica (Fabricius, 1792) (Coleoptera: Bostrichidae)

Walking stability of Rhyzopertha dominica (Fabricius, 1792) (Coleoptera: Bostrichidae)

Bioactivity of diatomaceous earth to Sitophilus zeamais (Coleoptera: Curculionidae) in different application conditions

Diatomaceous earth effects on weevils with different susceptibility standard to phosphine

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