Sub-lethal effects of a Bt-based bioinsecticide on the biological conditioning of Anticarsia gemmatalis

Fernandes, Fabrício Oliveira; Souza, Tamires Doroteo de; Sanches, Ariadne Costas; Dias, Naymã Pinto; Desidério, Janete Apparecida; Polanczyk, Ricardo Antônio

doi:10.1007/s10646-021-02476-5

Cited by 6 publications

(2 citation statements)

References 74 publications

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“…These metrics showed a considerable drop in severity in the groups treated with chlorantraniliprole, which produced similar results as seen in the present investigation. According to Fernandes et al [ 76 ], sublethal poisoning might affect an insect’s overall fitness and its reproductive capabilities. This notion was reinforced by the findings of the current study with P. xylostella .…”

Section: Discussionmentioning

confidence: 99%

Lethal, Sub-Lethal and Trans-Generational Effects of Chlorantraniliprole on Biological Parameters, Demographic Traits, and Fitness Costs of Spodoptera frugiperda (Lepidoptera: Noctuidae)

Akhtar

Afzal

Idrees

et al. 2022

Insects

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Fall armyworm [Spodoptera frugiperda (J. E. Smith, 1797)] was first reported in the Americas, then spread to all the continents of the world. Chemical insecticides are frequently employed in managing fall armyworms. These insecticides have various modes of actions and target sites to kill the insects. Chlorantraniliprole is a selective insecticide with a novel mode of action and is used against Lepidopteran, Coleopteran, Isopteran, and Dipteran pests. This study determined chlorantraniliprole's lethal, sub-lethal, and trans-generational effects on two consecutive generations (F0, F1, and F2) of the fall armyworm. Bioassays revealed that chlorantraniliprole exhibited higher toxicity against fall armyworms with a LC50 of 2.781 mg/l after 48 h of exposure. Significant differences were noted in the biological parameters of fall armyworms in all generations. Sub-lethal concentrations of chlorantraniliprole showed prolonged larval and adult durations. The parameters related to the fitness cost in F0 and F1 generations showed non-significant differences. In contrast, the F2 generation showed lower fecundity at lethal (71 eggs/female) and sub-lethal (94 eggs/female) doses of chlorantraniliprole compared to the control (127.5–129.3 eggs/female). Age-stage specific survival rate (Sxj), life expectancy (Exj) and reproductive rate (Vxj) significantly differed among insecticide-treated groups in all generations compared to the control. A comparison of treated and untreated insects over generations indicated substantial differences in demographic parameters such as net reproduction rate (R0), intrinsic rate of increase (r), and mean generation time (T). Several biological and demographic parameters were shown to be negatively impacted by chlorantraniliprole. We conclude that chlorantraniliprole may be utilized to manage fall armyworms with lesser risks.

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Section: Discussionmentioning

confidence: 99%

Lethal, Sub-Lethal and Trans-Generational Effects of Chlorantraniliprole on Biological Parameters, Demographic Traits, and Fitness Costs of Spodoptera frugiperda (Lepidoptera: Noctuidae)

Akhtar

Afzal

Idrees

et al. 2022

Insects

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“…Resistant populations and their sub-lethal effects caused by the use of the bacteria have already been reported (Sedaratian et al, 2013;Janmaat et al, 2014;Souza et al, 2019;Rabelo et al, 2020;Fernandes et al, 2021). However, there are no studies on phenotypic plasticity in adulthood, according to the exposure of the underdosage of Bt-based bioinsecticides.…”

Section: Experimental Design and Data Analysismentioning

confidence: 99%

Phenotypic plasticity in adults of Anticarsia gemmatalis exposed to sub-doses of Bt-based bioinsecticide

et al. 2024

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Anticarsia gemmatalis Hünber, 1818 is one of the main defoliating species in the soybean crop. Bacillus thuringiensis Berliner, 1915, is a bacterium used in the biological control of this pest species. Resistant populations and their sublethal effects caused by the use of the bacteria have already been reported; however, there are no studies on phenotypic plasticity in adulthood exposed to Bt-based bioinsecticide sub-doses. This study aimed to evaluate the morphometry of A. gemmatalis adults under laboratory conditions submitted to the Bt-based bioinsecticide Dipel® over the three generations. The body segments mensuread were width, length, and area of the anterior and posterior wings, the weight of the integument, chest, abdomen, wings, and the whole adult of males and females. Among the treatments, LC5 in the first generation and LC10 in the second generation were those with lower thresholds in relation to the weight of the chest and abdomen, considering the proportions of the body smaller than the females. The female’s weight adulthood was reduced by 10% about males, and, only in the first generation. Males have larger body size and more pronounced phenotypic plasticity than females. Here, we demonstrate the first study assessing the phenotypic plasticity of A. gemmatalis adults.

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Inhibitory efficacy of tripeptides on trypsin-like activity in soybean caterpillars Anticarsia gemmatalis (Lepidoptera: Erebidae) with dysbiosis

Schultz,

Meriño-Cabrera,

Carneiro

et al. 2024

Phytoparasitica

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Sub-lethal effects of a Bt-based bioinsecticide on the biological conditioning of Anticarsia gemmatalis

Cited by 6 publications

References 74 publications

Lethal, Sub-Lethal and Trans-Generational Effects of Chlorantraniliprole on Biological Parameters, Demographic Traits, and Fitness Costs of Spodoptera frugiperda (Lepidoptera: Noctuidae)

Lethal, Sub-Lethal and Trans-Generational Effects of Chlorantraniliprole on Biological Parameters, Demographic Traits, and Fitness Costs of Spodoptera frugiperda (Lepidoptera: Noctuidae)

Phenotypic plasticity in adults of Anticarsia gemmatalis exposed to sub-doses of Bt-based bioinsecticide

Inhibitory efficacy of tripeptides on trypsin-like activity in soybean caterpillars Anticarsia gemmatalis (Lepidoptera: Erebidae) with dysbiosis

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