Efficacy of Metarhizium anisopliae and Bacillus thuringiensis against tomato leafminer Tuta absoluta Meyrick (Lepidoptera: Gelechiidae)

Mantzoukas, Spiridon; Denaxa, Nikoleta-Kleio; Lagogiannis, Ioannis

doi:10.12944/carj.7.1.05

Cited by 4 publications

(3 citation statements)

References 46 publications

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“…Rodriguez, Gerding, and France (2006b) also reported 92% mortality of the third instars of T. absoluta , 8 days post‐surface treatment on the larva. Other laboratory studies have also reported high susceptibility of T. absoluta larval (Mantzoukas, Denaxa, & Lagogiannis, 2019; Tadele & Emana, 2017) and egg stage (Pires, Marques, Oliveira, & Alves, 2010; Rodriguez, Gerding, & France, 2006a) to M. anisopliae . Our results obtained in M. anisopliae ICIPE 18 (100% larval mortality) are also similar to the results of Tumuhaise et al.…”

Section: Discussionmentioning

confidence: 86%

Entomopathogenic fungus isolates for adult Tuta absoluta (Lepidoptera: Gelechiidae) management and their compatibility with Tuta pheromone

Akutse

Subramanian

Khamis

et al. 2020

J Applied Entomology

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Tomato (Solanum lycopersicum Mill.) (Solanaceae) is one of the most widely cultivated and consumed Solanaceous vegetable crop in the world. It is a major source of nutritious food and socioeconomic driver, providing a means of livelihood for rural dwellers (Heuvelink, 2005; Wafula, Waceke, & Macharia, 2018). However, tomato production in Africa is seriously challenged by insect pests and diseases that cause significant yield loss. In Africa, yield losses generally varied and ranged from 11% to 43% but can reach as high as 100% in

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Section: Discussionmentioning

confidence: 86%

Entomopathogenic fungus isolates for adult Tuta absoluta (Lepidoptera: Gelechiidae) management and their compatibility with Tuta pheromone

Akutse

Subramanian

Khamis

et al. 2020

J Applied Entomology

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“…The average percentage mortality of third instar larvae may be higher due to the higher consumption of leaf tissue compared to first and second instar larvae, and previous researchers have also reported significantly higher efficacy in first instar larvae than in second instar larvae [30]. [31] also found an inverse relationship between the virulence of Bt. toxins, with the growth and development of Helicoverpa armigera (Hübner) larvae, and its results indicated that the EPF and the entomotoxic protein produced by Bt.…”

Section: Toxicity Of Biocides On Third Instar Larvae Of T Absoluta M ...mentioning

confidence: 90%

Toxicity of some Biocides in the Tomato leaf Miner Tuta Absoluta Meyrick (Lepidoptera: Gelechiidae) in Laboratory

Ali

Muhammad

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The experiment was conducted in the Entomology Laboratory/Plant Protection Department/College of Agriculture and Forestry/Mosul University/Iraq in the year 2021, to evaluated the toxicity of biocides, Beauveria bassiana (Bals.) Vuill, (conc. 1, 3, 5 g/L) Bacillus thuringiensis var. kurstaki (conc. 1, 3, 5 g/L), Spinosad (conc. 0.15, 0.30, 0.60 ml/L) and Neem plant extract (Azadirachta indica) (conc. 0.25, 0.50, 1.00 ml/L) on the third larval instar and pupal stage of tomato leafminer (TLM) under laboratory conditions, 25 - 27 °C, and the average relative humidity was 60 - 65%. The results of the study showed that the treatment with Spinosad at a concentration of 0.60 mm/L was significantly superior compared to the rest of the biocides, with an average mortality of 86.67% and 90.67% for larvae and pupae, respectively. All biocides differed significantly compared to the control, which amounted to 0.00%, and the highest mean of larval mortality was 71.67% for the reading after ten days of treatment, which differed significantly compared to the reading after one and three days of treatment, which amounted to 23.89 and 50.56%, respectively. While the reading after nine days of treatment outperformed significantly, and recorded the highest average of pupal mortality, which amounted to 68.00%, compared to the lowest average reading after seven days of treatment, which amounted to 44.00%. The treatment with the biocides B. thuringensis at a concentration of 1, 3 and 5 g/L was superior, with the lowest average percentage of transformation of larva to pupal stage reaching 15.56, 2.22 and 0.00%, respectively, compared to the rest of the concentrations of other biocides and the control, which was 73.33%. The biocides B. thuringensis was significantly superior to the rest of the biocides, and the lowest average percentage of emergence was recorded, as it reached 6.67% in the third concentration 5 g/L, which did not differ significantly compared to the third concentration of the rest of the biocides, however, it differed significantly compared to the rest of the concentrations of other biocides, and the control, as the highest mean of the percentage of emergence rate was 76.67%. It is noted from the study that all biocides had a significant effect on their toxicity to TLM compared to the control, and that the toxicity of biocides for the third larval instar and pupa of TLM increased with increasing concentration and number of days after treatment, and led to a decrease in the average percentage of adult emergence with an increase in concentration used compared to the control. From the results of this study, it is possible to introduce these pesticides in the integrated pest management programs for TLM in open fields and protected cultivation.

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“…Within the entomopathogenic arena, several microbial organism were documented to be highly pathogenic to the different life stages of T. absoluta [ 25 , 26 , 27 , 28 , 29 ]. For example, Akutse et al [ 15 ] reported M. anisopliae isolates ICIPE 18, ICIPE 20, and ICIPE 665 with respective mortalities of 95.0, 87.5, and 86.25% in T. absoluta adults.…”

Section: Introductionmentioning

confidence: 99%

Interactions between the Entomopathogenic Fungus Metarhizium anisopliae ICIPE 20 and the Endoparasitoid Dolichogenidea gelechiidivoris, and Implications for Combined Biocontrol of Tuta absoluta

Sambo

Akutse

Plessis

et al. 2022

Biology

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The Integrated Pest Management (IPM) approach have been widely promoted and used for the management of native and invasive pests, while the use of various components of the IPM can have a synergetic, additive, or antagonistic effect on each other; this study evaluated the susceptibility of Dolichogenidea gelechiidivoris (Marsh) (Hymenoptera: Braconidae), to the Metarhizium anisopliae (Metschnikoff) ICIPE 20 through direct and indirect infection approaches. The effect of fungus on parasitoid longevity, survival of parasitized-larvae, preference of the parasitoid to fungal treated and untreated larvae, and percent parasitism of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) under different infection scenarios were assessed. The direct application of dry conidia to the parasitoid prior to exposure to the host, reduced D. gelechiidivoris longevity, though the infected female wasps still yielded high parasitism (over 70%). Infecting the parasitized larvae at different ages led to a respective reduction of parasitoid emergence by 35% and 23% for infection at 1 and 5 days post-parasitisation. Exposure of healthy-D. gelechiidivoris adults to a plant-sprayed with fungus did not affect their longevity, and no discriminatory host selection was observed. The highest mortality (~80%) of T. absoluta was achieved when D. gelechiidivoris and M. anisopliae ICIPE 20 were used in combination, indicating an additive impact on the target pest; however, field validation can shed more light on this outcome.

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Efficacy of Metarhizium anisopliae and Bacillus thuringiensis against tomato leafminer Tuta absoluta Meyrick (Lepidoptera: Gelechiidae)

Cited by 4 publications

References 46 publications

Entomopathogenic fungus isolates for adult Tuta absoluta (Lepidoptera: Gelechiidae) management and their compatibility with Tuta pheromone

Entomopathogenic fungus isolates for adult Tuta absoluta (Lepidoptera: Gelechiidae) management and their compatibility with Tuta pheromone

Toxicity of some Biocides in the Tomato leaf Miner Tuta Absoluta Meyrick (Lepidoptera: Gelechiidae) in Laboratory

Interactions between the Entomopathogenic Fungus Metarhizium anisopliae ICIPE 20 and the Endoparasitoid Dolichogenidea gelechiidivoris, and Implications for Combined Biocontrol of Tuta absoluta

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