scholarly journals Laboratory evaluation of the effects of essential oil of Myrciaria floribunda leaves on the development of Dysdercus peruvianus and Oncopeltus fasciatus

2014 ◽  
Vol 24 (3) ◽  
pp. 316-321 ◽  
Author(s):  
Luis A.C. Tietbohl ◽  
Tarlile Barbosa ◽  
Caio P. Fernandes ◽  
Marcelo G. Santos ◽  
Francisco P. Machado ◽  
...  
Keyword(s):  
Essential Oil ◽  
Oncopeltus Fasciatus ◽  
Laboratory Evaluation ◽  
Dysdercus Peruvianus

scholarly journals Laboratory evaluation of Clusia fluminensis extracts and their isolated compounds against Dysdercus peruvianus and Oncopeltus fasciatus

2017 ◽  
Vol 27 (1) ◽  
pp. 59-66 ◽  
Author(s):  
Rodrigo C. Duprat ◽  
Maria C. Anholeti ◽  
Bruno P. de Sousa ◽  
João P.F. Pacheco ◽  
Maria R. Figueiredo ◽  
...  
Keyword(s):  
Oncopeltus Fasciatus ◽  
Laboratory Evaluation ◽  
Dysdercus Peruvianus

scholarly journals Insecticidal activity of Pilocarpus spicatus Saint-Hilaire (Rutaceae) essential oil against the crop pest Dysdercus peruvianus (Guérin-Méneville, 1831) and Oncopeltus fasciatus (Dallas, 1852)

2020 ◽  
Vol 9 (11) ◽  
pp. e90091110489
Author(s):  
Raul Apolinário ◽  
Jeane Nogueira ◽  
Meiriellem G. da Silveira Costa ◽  
Jacenir Santos-Mallet ◽  
Marcelo Guerra Santos ◽  
...  
Keyword(s):  
Essential Oil ◽  
Insecticidal Activity ◽  
Biological Effects ◽  
Lethal Dose ◽  
Oncopeltus Fasciatus ◽  
Bioactive Molecules ◽  
Continuous Treatment ◽  
Mass Spectrometry Analysis ◽  
Gas Chromatography Mass Spectrometry ◽  
Dysdercus Peruvianus

Studies were carried out to evaluate the insecticidal activity of Pilocarpus spicatus Saint-Hilaire (Rutaceae) essential oil (EO) on the development of the Hemiptera Dysdercus peruvianus (Guérin-Méneville, 1831) and Oncopeltus fasciatus (Dallas, 1852). Gas Chromatography/Mass spectrometry analysis revealed a chemical composition with sabinene (32.27%) and sylvestrene (27.26%) as major constituents. Topical and continuous treatment with the pure EO induced 100% of mortality while serial dilutions of the EO induced different levels of lethality in a dose response manner. Median lethal dose (LD50) and lethal dose 90% (LD90) were determined. Malformations in insects and permanent or supernumerary nymphs were often observed after treatments, and the use of scanning electron microscopy allowed the analysis of morphological changes. The different biological effects of P. spicatus EO point out its potential as a rich source of bioactive molecules to be used as an alternative control method against agricultural pest insects.

Laboratory evaluation of the effects of Manilkara subsericea (Mart.) Dubard extracts and triterpenes on the development of Dysdercus peruvianus and Oncopeltus fasciatus

2012 ◽  
Vol 69 (2) ◽  
pp. 292-301 ◽  
Author(s):  
Caio P Fernandes ◽  
Alexandre Xavier ◽  
João Pedro Furtado Pacheco ◽  
Marcelo Guerra Santos ◽  
Rodrigo Mexas ◽  
...  
Keyword(s):  
Oncopeltus Fasciatus ◽  
Laboratory Evaluation ◽  
Dysdercus Peruvianus

Laboratory Evaluation of Toxicity of Calamus Oil Against Four Species of Stored-Product Insects2

1991 ◽  
Vol 26 (1) ◽  
pp. 76-80 ◽  
Author(s):  
Helen C. F. Su
Keyword(s):  
Essential Oil ◽  
Callosobruchus Maculatus ◽  
Sitophilus Oryzae ◽  
Tribolium Confusum ◽  
Laboratory Evaluation ◽  
Contact Toxicity ◽  
Acorus Calamus ◽  
Lasioderma Serricorne

Calamus oil, an essential oil of Acorus calamus L., was evaluated for its contact toxicity to adults of Callosobruchus maculatus (F.), Sitophilus oryzae (L.), Lasioderma serricorne (F.), and Tribolium confusum Jacquelin du Val. Topically applied, the oil was highly toxic to L. serricorne with 100% mortality at 30 μg/insect, and toxic to C. maculatus and S. oryzae with 98.3 and 61.7% mortality, respectively, at 50 μg/insect. It was nontoxic to T. confusum. When applied at a dosage of 1000 ppm to wheat or black-eyed peas, the oil completely protected them from infestation by S. oryzae and C. maculatus, respectively. The oil, at dosages of 500 and 250 ppm, still gave high protection to wheat and peas from infestation by these insects, respectively.

scholarly journals Effects of nanoemulsion and essential oil from the leaves of Ocotea elegans against Dysdercus peruvianus

2020 ◽  
Vol 9 (10) ◽  
pp. e909108424
Author(s):  
Leonor Monteiro Nascimento ◽  
Raul Apolinario ◽  
Francisco Paiva Machado ◽  
Arthur Luiz Correa ◽  
Gabriel Rocha Caldas ◽  
...  
Keyword(s):  
Survival Rate ◽  
Essential Oil ◽  
Lethal Dose ◽  
Acetylcholinesterase Inhibition ◽  
Flame Ionization ◽  
Inhibition Concentration ◽  
Hydrophilic Lipophilic Balance ◽  
Insecticide Activity ◽  
Electron Impact Mass ◽  
Dysdercus Peruvianus

The Dysdercus peruvianus Guérin-Méneville is commonly known as the cotton stainer bug. In this study, it was evaluated the insecticide activity and mode of action of the essential oil from leaves of Ocotea elegans Mez and its nanoemulsion against D. peruvianus. Leaves of O. elegans were extracted by hydrodistillation. The essential oil obtained was analyzed by gas chromatography coupled with electron impact mass spectrometry and flame ionization detector. The essential oil toxicity measured by lethal dose 50 (LD50) and survival rate of insects were recorded. Lastly, an assay was carried out to assess the inhibition of the enzyme acetylcholinesterase to determine a possible mechanism of action of insecticidal activity. The sesquiterpene sesquirosefuran was the major compound detected and corresponds to 92% of the components of the essential oil. The nanoemulsion more stable showed hydrophilic lipophilic balance (HLB 11.74), droplet size 92±1.80 nm, and polydispersity index (PDI of 0.215±0.015). After the topical application of the O. elegans essential oil, significant decreases in the survival of D. peruvianus occurred in a dose-response manner with LD50 = 162.18 μg and the survival rate of the nanoemulsion in D. peruvianus was 10.0±5.47, a better value than in pure essential oil. The acetylcholinesterase inhibition presented inhibition concentration (IC50 = 1.37mg/mL) and mixed type of inhibition. This indicates that the essential oil of leaves from O. elegans and its nanoemulsion are promising candidates for use in integrated pest management programs.

scholarly journals Effects of Zanthoxylum caribaeum essential oil against cotton bug Dysdercus peruvianus

2020 ◽  
Vol 9 (9) ◽  
pp. e197997152
Author(s):  
João Pedro Furtado Pacheco ◽  
Jeane Nogueira ◽  
Rodrigo Prado Rodrigues de Miranda ◽  
Rodrigo Coutinho Duprat ◽  
Francisco Paiva Machado ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Essential Oil ◽  
Integrated Pest Management ◽  
Pest Management ◽  
Dependent Manner ◽  
Stink Bug ◽  
Agricultural Crops ◽  
Insect Mortality ◽  
Dose Dependent ◽  
Dysdercus Peruvianus

Agricultural crops need protection from a variety of different insects popularly known as pests. Some of these pests are becoming increasingly resistant to conventional pesticides, so new control alternatives are needed. In this work, the effects of the essential oil of the plant Zanthoxylum caribaeum on the development of cotton stink bug Dysdercus peruvianus were analyzed. After analysis by chromatography and mass spectrometry, the essential oil of Z.  caribaeum presented 54 substances, the main constituents being Sylvestrene, Muurola-4 (14), 5-trans-diene, Isodaucene and α-Pinene. These compounds significantly increased insect mortality and interrupted metamorphosis and molting, often in a dose-dependent manner. In addition, nymphs with deformed legs, wings and antennae were observed. According to the data, the components present in the essential oil of Z. caribeum appear to be promising candidates for the development of green insecticides for use in future integrated pest management (MIP) programs.

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