Eficiência de inseticidas no controle de Sitophilus oryzae (L.) (COLEOPTERA: CURCULIONIDAE) e Rhyzopertha dominica (FAB.) (COLEOPTERA: BOSTRICHIDAE) em cevada armazenada

Pereira, P. R. V. da S.; Pinto, Airton Rodrigues; Furiatti, Rui S.

doi:10.7213/cienciaanimal.v1i3.14952

Cited by 2 publications

(3 citation statements)

References 2 publications

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“…Data of this study also revealed the statistical equality of deltamethrin treatment in the setting I, after thirty days of storage where there was no humidity and temperature control, and in the setting II, after 60 days of storage with humidity control in an average of 70% and ambient temperature, which was efficient in insects killing like chlorpyrifos. Pereira et al (2003), working with barley stored grains, also verified deltamethrin efficacy in Sitophilus oryzae mortality until the thirtieth day of storage, although Lahóz (2008) had not seen the expected efficiency in the control of Sitophilus zeamais in stored corn from the beginning of assessments. Treatments based on vegetal extracts have not statistically differed among them and the control in the first evaluation period, with lower efficiency in control compared to chemical insecticides.…”

Section: Resultsmentioning

confidence: 88%

Chemical pesticides and vegetal extracts on Sitophilus zeamais control in stored corn grains

et al. 2016

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Sitophilus species are major pests of stored grain and their control is achieved mainly with the use of chemical insecticides, but the indiscriminate use of these products is resulting in several undesirable factors to man and to the environment. Thus, the use of natural insecticides comes as an option to control the insects, while lessening risks to the environment. The study was conducted at the Institute of Agricultural Sciences and Technologies, Rondonópolis campus of the Federal University of Mato Grosso, in the period from March to September 2012. The experiment was conducted under three different storing conditions. Aqueous extracts were obtained by the addition of Allium sativum L, Azadirachta indica A. Juss. and Cymbopogon winterianum Jowitt vegetable powders in distilled water, at a ratio of 5 g per 100 ml, and the levels of chemical insecticides were of 0.04 and 0.15 ml/100 ml of water for deltamethrin and chlorpyrifos, respectively. Treatments were added to the corn grains, which were placed in a 2.5 L glass container, mixed by manual shaking and infested with 20 adults of unsexed Sitophilus zeamais. Grains were stored for 60 days. At 30 and 60 days, the following items were analyzed: bugs count, water content in grains and electrical conductivity. The data were submitted to analysis of variance, and means were compared by Tukey test at 5% probability. At 30 days, the efficiency of chemical insecticides in the control of Sitophilus zeamais was observed in the three storage environments. Vegetal extracts were not effective in controlling insects. The larger number of insects increased the electrical conductivity and humidity values in the grains.

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Section: Resultsmentioning

confidence: 88%

Chemical pesticides and vegetal extracts on Sitophilus zeamais control in stored corn grains

et al. 2016

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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: 76%

“…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%

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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Eficiência de inseticidas no controle de Sitophilus oryzae (L.) (COLEOPTERA: CURCULIONIDAE) e Rhyzopertha dominica (FAB.) (COLEOPTERA: BOSTRICHIDAE) em cevada armazenada

Cited by 2 publications

References 2 publications

Chemical pesticides and vegetal extracts on Sitophilus zeamais control in stored corn grains

Chemical pesticides and vegetal extracts on Sitophilus zeamais control in stored corn grains

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

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