Survival, development and reproduction of Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae) under effects of insecticides used in tomato plants

Silva, Túlio Guimarães; Souza, Joseane Rodrigues de; Moreira, Luciano Bastos; Lima, Lucas Lorenzon Resende; Carvalho, Geraldo Andrade

doi:10.1007/s10646-021-02415-4

Cited by 5 publications

(3 citation statements)

References 51 publications

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Section: Discussionmentioning

confidence: 99%

“…Methoxyfenozide accelerates molting, binding to the ecdysone receptor [74]. Therefore, the action of diacylhydrazine is expected to be more evident in immature stages than in adults, as suggested by several studies that affirmed its innocuity [75][76][77][78][79][80][81][82]. In contrast, the spinosyn-based insecticides can also be neurotoxic, acting by contact or ingestion [83], and harmful effects on natural enemies are more evident when they are ingested [84].…”

Section: Discussionmentioning

confidence: 99%

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Predator-Unfriendly Pesticides Harm the Beneficial Mite Neoseiulus idaeus Denmark & Muma (Acari: Phytoseiidae)

et al. 2023

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Pesticides are commonly used to control weeds, diseases, and pests in soybean crops, although natural enemies are also key components of integrated pest management programs protecting soybean from pests. The predatory mite Neoseiulus idaeus Denmark & Muma is commonly found in soybeans associated with tetranychid mites. We determined the compatibility of some pesticides used in Brazilian soybean fields with N. idaeus on the basis of their lethal and sub-lethal effects. We assessed the acute toxicity of pesticides that are considered harmless to females of N. idaeus and evaluated the effects on the mite offspring. Acephate as well as imidacloprid and bifenthrin were most toxic to adult females and were classified as harmful. Chlorfenapyr, indoxacarb, and the neonicotinoid and pyrethroid mixtures were classified as slightly to moderately harmful. Immatures of N. idaeus were able to develop and reach the adult stage when treated with chlorantraniliprole, flubendiamide, glyphosate, and teflubenzuron, but immature survival was reduced to 42 and 64% for offspring of females treated with chlorantraniliprole or teflubenzuron, respectively. Reproduction was most affected in females exposed to chlorantraniliprole and teflubenzuron; these females had daily oviposition rates of 0.5 and 0.4 egg/female/day, respectively, and mean fecundities of 2.7 and 5.8 eggs/female, respectively. On the basis of sublethal effects and life table parameters, chlorantraniliprole was classified as moderately harmful, while the other pesticides tested were classified as harmless. In considering the use of pesticides while targeting the conservation of N. idaeus as a predator of important pests in soybean crops, one must prioritize pesticides that will most likely have less harmful effects on this predator in the field.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Predator-Unfriendly Pesticides Harm the Beneficial Mite Neoseiulus idaeus Denmark & Muma (Acari: Phytoseiidae)

et al. 2023

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“…23 However, this is not straightforward because numerous papers have reported deleterious effects of IGR and other biorational compounds on natural enemies. 16,24,25 Therefore, in order to determine the selectivity (or hazardousness) of insecticides, either old or newer molecules, studies assessing their lethal and sublethal (e.g. effects on cycle duration, fecundity and sex ratio) on natural enemies are required.…”

Section: Introductionmentioning

confidence: 99%

Side effects of insecticides applied to cotton on adult Trichogramma pretiosum by three exposure routes

Costa

Farias

Passos

et al. 2022

Pest Management Science

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BACKGROUND Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) is released in extensive areas cultivated with cotton worldwide, but the use of synthetic insecticides threatens the establishment of augmented populations. Thus, an assessment of insecticides’ effects on T. pretiosum is required to establish their compatibility with mass releases of the parasitoid. We studied in the laboratory the impact of insecticides administered through different exposure routes (direct‐spraying, ingestion and residue contact) on T. pretiosum. Based on their toxicity, the insecticides were rated into four categories (harmless, slightly harmful, moderately harmful and harmful) as per the International Organization for Biological Control. RESULTS The survival, parasitism ability and emergence of the treated adults and offspring (F1 and F2), in addition to the persistence of the toxic effects in semi‐field conditions, were assessed. Teflubenzuron did not reduce female survival and caused a lesser impact on T. pretiosum on both direct‐spraying and ingestion bioassays. In the residue contact bioassay, teflubenzuron and flupyradifurone were rated as harmless and slightly harmful, respectively. The other active substances (chlorfenapyr, thiodicarb and methomyl) were harmful to the parasitoid by all exposure routes and were persistent (with toxicity duration surpassing 30 days). CONCLUSION From these findings, teflubenzuron is the insecticide most compatible with T. pretiosum releases and should be preferred over the other active substances. Further studies with the harmful insecticides (thiodicarb, chlorfenapyr and methomyl) are required to determine their toxicity under field conditions and confirm their incompatibility with T. pretiosum releases.

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Response of Doru luteipes (Dermaptera: Forficulidae) to insecticides used in maize crop as a function of its life stage and exposure route

Moreira

Lima

Farias

et al. 2022

Environ Sci Pollut Res

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The present study aimed to evaluate insecticide toxicity to Doru luteipes (Scudder), a major predator of corn pests. Lethal (reduction in survival) and sublethal effects (prey consumption, adult tibia length and walking distance) of compounds were assessed on earwig nymphs and adults. Insects were exposed to the compounds through contact (exposure to insecticide residue on corn leaves) and ingestion (consumption of insecticide-treated prey) routes. Tested insecticides included a biopesticide (Spodoptera frugiperda multiple nucleopolyhedrovirus -SfMNPV), and modern ( ubendiamide and meta umizone) and older neurotoxins (imidacloprid + β-cy uthrin). The imidacloprid/β-cy uthrin mix was highly toxic (100% mortality) to the predator, regardless of the exposure route and predator stage. Meta umizone caused mortality superior to 95% and 45% of nymphs and adults, respectively. Flubendiamide and SfMNPV were the least toxic compounds, not differing from the untreated control in any of the assessed endpoints. Adult tibial length did not differ among treatments. Overall, the insecticides caused a more pronounced effect on D. luteipes nymphs than on adults and were more toxic by the contact route. From these ndings, ubendiamide and SfMNPV are safer for D. luteipes and should head insecticide choice in integrated pest management programs in corn.

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Survival, development and reproduction of Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae) under effects of insecticides used in tomato plants

Cited by 5 publications

References 51 publications

Predator-Unfriendly Pesticides Harm the Beneficial Mite Neoseiulus idaeus Denmark & Muma (Acari: Phytoseiidae)

Predator-Unfriendly Pesticides Harm the Beneficial Mite Neoseiulus idaeus Denmark & Muma (Acari: Phytoseiidae)

Side effects of insecticides applied to cotton on adult Trichogramma pretiosum by three exposure routes

Response of Doru luteipes (Dermaptera: Forficulidae) to insecticides used in maize crop as a function of its life stage and exposure route

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