Toxicity of Ten Native Edible and Essential Plant Oils Against the Granary Weevil, Sitophilus granarius L. (Coleoptera: Curculionidae)

Zohry, Nasra M. H.; Ali, Salwa A.; Ibrahim, Abdelwahab A.

doi:10.21608/eajbsf.2020.124238

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…At the opposite, Zohry et al [50] tested toxicity of 10 essential oils on S. granarius by exposure to treated wheat in a protocol close to that of this study. Garlic oil was identified as the most toxic one with a concentration of oil per grams of grain similar to ours.…”

Section: Insecticidal Potentialmentioning

confidence: 99%

“…In addition, most essential oils have low mammalian toxicity in comparison with synthetic insecticides and are considered as eco-friendly [18]. For instance, Stroh et al [19] showed that eugenol was 1500 times less toxic than pyrethrum and 15,000 times less toxic than the organophosphate azinphosmethyl for juvenile rainbow trout based on 96 h-LC 50 values.…”

Section: Introductionmentioning

confidence: 99%

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Insecticidal Activity of 25 Essential Oils on the Stored Product Pest, Sitophilus granarius

Demeter

Lebbe

Hecq

et al. 2021

Foods

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The granary weevil Sitophilus granarius is a stored product pest found worldwide. Environmental damages, human health issues and the emergence of resistance are driving scientists to seeks alternatives to synthetic insecticides for its control. With low mammal toxicity and low persistence, essential oils are more and more being considered a potential alternative. In this study, we compare the toxicity of 25 essential oils, representing a large array of chemical compositions, on adult granary weevils. Bioassays indicated that Allium sativum was the most toxic essential oil, with the lowest calculated lethal concentration 90 (LC90) both after 24 h and 7 days. Gaultheria procumbens, Mentha arvensis and Eucalyptus dives oils appeared to have a good potential in terms of toxicity/cost ratio for further development of a plant-derived biocide. Low influence of exposure time was observed for most of essential oils. The methodology developed here offers the possibility to test a large array of essential oils in the same experimental bioassay and in a standardized way. It is a first step to the development of new biocide for alternative management strategies of stored product pests.

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Section: Insecticidal Potentialmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Insecticidal Activity of 25 Essential Oils on the Stored Product Pest, Sitophilus granarius

Demeter

Lebbe

Hecq

et al. 2021

Foods

View full text Add to dashboard Cite

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Reducing Postharvest Loss of Stored Grains Using Plant-Based Biopesticides: A Review of Past Research Efforts

Bezabih

Satheesh

Fanta

et al. 2022

Advances in Agriculture

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The world population is projected to be 9.1 billion by the year 2050, and about 70% extra food will be required. One of the main challenges regarding food security is postharvest loss due to insect pests. The overall postharvest grain losses for sub-Saharan Africa could be as high as US$4 billion/year. This is around 15% of the total production of cereal crops. The use of chemical pesticides to reduce grain damage by insects over the past five decades has led to a range of environmental and human health problems. These problems forced researchers to develop alternative methods that have lower adverse effects. Alternative strategies focus on new forms of pesticides that are effective against a specific target species, have fewer residues in food, are unlikely to contaminate the environment, and have lower potential to produce resistance, are biodegradable, and are suitable for use in integrated pest management programs. Some natural plant products effectively meet these criteria and have the potential to manage insect pests of stored grains. However, the understanding of the use of botanical pesticides in storage pest management systems is limited in most parts of sub-Saharan African countries. Effective plant products are not formulated and used widely. To fill the gaps the first step is to synthesize the available information and disseminate it. This review is, therefore, a summary of the current developments and improvements of botanical pesticides in the management of stored grain pests including challenges and future issues in insect pest management.

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Fatty acid composition and biological activity of four olive oils from Kabylia (Algeria) against Rhyzopertha dominica (Coleoptera: Bostrychidae) infesting wheat seeds

Kerbel¹,

Abdelli²,

Azzi³

et al. 2021

Studia UBB Biologia

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The use of conventional insecticides is one of the most widely used methods of controlling pests of stored grains. But the presence of toxic residues in treated commodities and the emergence of insect resistant strains are becoming a growing concern. Olive oil is well known throughout the world for its benefits to human health, but little known for its biological activity against insect pests.The aim of this work is to study the fatty acid composition and the insecticidal activity of oils according to origin of plantation, against one of the main insect pests of stored grain Rhyzopertha dominica (Coleoptera: Bostrychidae). The olive oils were obtained using an oleodoser from olives of the 'Chemlal' variety harvested in 4 olive groves in Kabylia (Algeria) and the analysis of the fatty acid composition was carried out by gas chromatography. The main fatty acids found are oleic, palmitic and linoleic acids. Biological tests conducted under laboratory conditions, at a temperature of 30±1°C and a relative humidity of 70 ± 5 %, revealed that the 4 olive oils, applied on soft wheat grains, showed a contact toxicity against R. dominica. The toxicity of the oils varied as a function of the dose and the duration of treatments. After 24 h of exposure, all oils tested at the highest dose (0.4 mL/25 g) were found to be highly toxic to adults of R. dominica, with mortality rates ranging from 72.5 to 95 %. The toxicity of the 4 oils based on the LD50 (mL/25 g) values for 24 h mortality is established as follows: Maatkas (213), Bachloul (232), Tadmait (234) and M'Chedellah (263). The number of the F1 offspring decreases as the dose of oil is increased to reach zero with the highest dose, for all treatments. All oils tested completely preserve soft wheat seeds from R. dominica attacks using the same highest dose. On the other hand, results also revealed that treatments with olive oil do not affect the germination capacity of soft wheat seeds.

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Toxicity of Ten Native Edible and Essential Plant Oils Against the Granary Weevil, Sitophilus granarius L. (Coleoptera: Curculionidae)

Cited by 3 publications

References 15 publications

Insecticidal Activity of 25 Essential Oils on the Stored Product Pest, Sitophilus granarius

Insecticidal Activity of 25 Essential Oils on the Stored Product Pest, Sitophilus granarius

Reducing Postharvest Loss of Stored Grains Using Plant-Based Biopesticides: A Review of Past Research Efforts

Fatty acid composition and biological activity of four olive oils from Kabylia (Algeria) against Rhyzopertha dominica (Coleoptera: Bostrychidae) infesting wheat seeds

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