Parasitism of Telenomus remus Nixon on Spodoptera frugiperda J.E. Smith and acceptability of Spodoptera littoralis Boisduval as factitious host

Laminou, Saidou A.; Bâ, M.; Karimoune, Laouali; Doumma, Ali; Muniappan, R.

doi:10.1016/j.biocontrol.2023.105242

Cited by 3 publications

(2 citation statements)

References 42 publications

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“…remus production is USD 0.0004 per wasp based on the eggs of the FAW, and the cost is USD 0.0002 per wasp when using the eggs of C. cephalonica [34]. The high cost of production has motivated many researchers to develop new host alternatives and production techniques [11,50]. In contrast, the production of Trichogramma spp.…”

Section: Discussionmentioning

confidence: 99%

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Field Control Effect of Telenomus remus Nixon and Trichogramma chilonis Ishii Compound Parasitoid Balls against Spodoptera frugiperda (J. E. Smith)

Yuan,

Guo,

2024

Insects

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Although the release of egg parasitoids has proven to be an effective strategy for the control of the fall armyworm (FAW), a single egg parasitoid, however, has exposed some deficiencies in practice, and it is worthwhile to explore whether the combination of multiple parasitoid species released can be used to control FAW by adopting an inter- or intra-specific relationship. In this study, we released compound parasitoid balls of Te. remus and Tr. chilonis in maize fields to explore the effects of combinations in different proportions of these two egg parasitoids on the control of the FAW. The results showed that the release of compound parasitoid balls improved the control effect on the FAW compared to the release of only Te. Remus (100%) and only Tr. Chilonis (100%). The treatments released with compound parasitoid balls significantly increased the egg parasitism rate against the FAW, reduced its populations, and alleviated its damage to maize as compared to the treatment with only Tr. chilonis (100%) released, whereas there was no significant difference in the egg parasitism rate and FAW populations between the treatments with the release of only Te. remus (100%) and that of compound parasitoid balls. Among the compound parasitoid balls with different proportions of egg parasitoids, the treatment with 80% Te. remus and 20% Tr. chilonis and that with 20% Te. remus and 80% Tr. chilonis could still retain more than 50% of the control effect against the FAW after 15 days of release and given the higher cost of production of Te. Remus, our results suggested that the combination of 20% Te. Remus and 80% Tr. Chilonis is a more cost-efficient ratio for the control of the FAW. Our findings may provide a new perspective for the sustainable control of the FAW.

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Section: Discussionmentioning

confidence: 99%

“…Biological control has proven to be an effective strategy for pest control due to its high environmental safety and effectiveness [8,9]. For example, biological control with the use of egg parasitoids has been developed for the management and control of the FAW [10,11]. Among the many egg parasitoids, Trichogramma spp.…”

Section: Introductionmentioning

confidence: 99%

Field Control Effect of Telenomus remus Nixon and Trichogramma chilonis Ishii Compound Parasitoid Balls against Spodoptera frugiperda (J. E. Smith)

Yuan,

Guo,

2024

Insects

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The repository of biocontrol agents for Spodoptera frugiperda (Smith, 1797) with emphasis on their mode of action

Mahmood,

Parwez

2024

JoBAZ

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Background Spodoptera frugiperda (Smith, 1797) is one of the most destructive pests of Maize plants, causing an estimated 40% crop loss in 2019. It is a native pest of America and difficult to control since it has developed resistance against most insecticides efficient in controlling lepidopteran pests, including recommended Chlorantraniliprole and Flubendiamide. Due to the increasing need for a change in pest management methods, it is necessary to consider biological control on a commercial level. Main body In this review, we have put together a list of all the biocontrol agents (parasites, parasitoids, predators, viruses, bacteria, and fungi) reported from different parts of the world effective in managing the impact of S. frugiperda, along with an elaborate mechanism of action of each natural killer. After analyzing the procured data, Pareto charts were prepared plotting the distribution of the mortality of S. frugiperda caused by parasitoids and pathogens. The regional abundance was plotted in the form of graph. Conclusion Pareto’s charts (Fig. 6) shows that Telenomus remus and Steinernema riobrave accounts for a maximum of 90% mortality of S. frugiperda among other high contributors (Chelonus insularis, Trichospilus pupivora, Ophion flavidus, Heterorhabditis indica, Heterorhabditis bacteriophora, Trichogramma mwanai). NPV and Metarhizium anisopliae were proved to be the most effective micro-entomopathogens causing up to 98% mortality. Also, these entomopathogens were reported all over the world but found abundant in Mexico and India. Based on this study, we recommend the augmentation of entomopathogenic insects on a large scale only to commercialize them in the market and produce different ready-to-use pathogenic formulations to be applied in the fields combined with a significantly less quantity of harmful chemical ailments.

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Side effects of insecticides used in soybean and corn for the egg parasitoid Telenomus remus (Hymenoptera: Scelionidae)

Exteckoetter,

Oliveira,

de Figueiredo

et al. 2024

Preprint

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Spodoptera frugiperda (Lepidoptera: Noctuidae) is one of the main pests of corn and soybean crops. Its control is carried out through insecticide applications that often cause biological imbalances with population reduction of natural enemies. One of the natural enemy species associated with this noctuid is the egg parasitoid Telenomus remus (Hymenoptera: Scelionidae). The objective was to evaluate the side effects of the insecticides chlorantraniliprole, indoxacarb, spinetoram, and chlorpyrifos, at the highest dosages recommended by the manufacturers, aiming to integrate chemical and biological methods. The insecticides were sprayed on eggs of S. frugiperda containing T. remus in its immature phase (egg-larva period and pupal stage) and adult stage. The design used was completely randomized. The number of surviving insects, parasitized eggs, emerged parasitoids, and males and females were evaluated. The insecticide chlorpyrifos reduced parasitism and emergence of insects in the F1 generation by 100% when applied to eggs of S. frugiperda containing T. remus during the egg-larva period and pupal stage, being classified as harmful according to the toxicological classification of IOBC. The other insecticides were selective for the parasitoid in its immature phase. The insecticides spinetoram and chlorpyrifos were toxic to adult females (F0) of the parasitoid exposed to residues of the insecticides on contaminated surfaces. Due to the low toxicity of the insecticides chlorantraniliprole, spinetoram, and indoxacarb to T. remus in its immature phase, and the insecticides indoxacarb and chlorantraniliprole to the adult stage, these insecticides should be prioritized in integrated management programs for S. frugiperda.

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Parasitism of Telenomus remus Nixon on Spodoptera frugiperda J.E. Smith and acceptability of Spodoptera littoralis Boisduval as factitious host

Cited by 3 publications

References 42 publications

Field Control Effect of Telenomus remus Nixon and Trichogramma chilonis Ishii Compound Parasitoid Balls against Spodoptera frugiperda (J. E. Smith)

Field Control Effect of Telenomus remus Nixon and Trichogramma chilonis Ishii Compound Parasitoid Balls against Spodoptera frugiperda (J. E. Smith)

The repository of biocontrol agents for Spodoptera frugiperda (Smith, 1797) with emphasis on their mode of action

Side effects of insecticides used in soybean and corn for the egg parasitoid Telenomus remus (Hymenoptera: Scelionidae)

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