Inseticidas para o controle da traça-das-crucíferas e impactos sobre a população natural de parasitóides

Bôas, G. L. Villas; Branco, Marina Castelo; Medeiros, Maria Alice de; Monnerat, R. G.; França, Félix Humberto

doi:10.1590/s0102-05362004000400006

Cited by 11 publications

(4 citation statements)

References 9 publications

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“…Diamondback moth is highly destructive, and chemical control is the main strategy for controlling this pest owing to its practicality, ease of use, and immediate result (VILAS BOAS et al, 2004). However, an improper insecticide use has recently been observed, with up to 4 applications/ week (OLIVEIRA et al, 2011;XIA et al, 2014) and >20 during the planting cycle (PÉREZ et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Locomotor response of diamondback moth (Plutella xylostella) populations to a neurotoxic insecticide under laboratory conditions

et al. 2020

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The present study aimed to evaluate changes in the locomotor activity of diamondback moth (Plutella xylostella) populations exposed to surfaces treated with the insecticide chlorantraniliprole under laboratory conditions. Diamondback moth populations from municipalities incorrectly using the insecticide [Camocim de São Félix, PE (CSF); Sairé, PE (SR); and Lajedo, PE (LJ)] and two laboratory populations from Recife, PE (RCF), and Viçosa, MG (VÇS) were exposed to dry insecticide residues in increasing concentrations. The following behavioral parameters of the populations were analyzed: walking time (WT), mean walking speed (MWS), and rest time (RT). Regarding RT, the SR and CSF populations demonstrated a behavior of irritability and increased WT with increased exposure concentration. The RCF population presented a contrasting response. The MWS values in the SR and CSF populations showed a decreasing trend with increased exposure concentration. The LJ and RCF populations showed no changes in terms of MWS. The RT values in the SR population decreased with increased insecticide concentration. In general, the SR and CSF populations presented a behavioral pattern different from that of laboratory populations. The changes in locomotor activity observed may result in lower control efficacy of the insecticide due to repellency or escape of insects. Regarding the effect of insecticide concentrations used in the populations, a defined pattern was not observed, and the effect alternated between an increase, a decrease, and an undefined pattern for the variables studied.

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Section: Introductionmentioning

confidence: 99%

Locomotor response of diamondback moth (Plutella xylostella) populations to a neurotoxic insecticide under laboratory conditions

et al. 2020

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“…According to Cardoso et al (2010) and Filgueira (2013) to control Lepidoptera insect species, one should preferably use the Bacillus thuringienses biological control, which is a bacterium with exclusive action on caterpillars. The active ingredient spinosad is a secondary metabolite of aerobic fermentation of the actinomycete Sacchapolyspora spiniosa, which has moderate selectivity to the cruciferous moth parasitoids (Villas Boas et al, 2004). Also, among these microorganisms, highlight plant growth promoting rhizobacteria, which comprise a group with great potential as biological control agents (Thuler et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

EVALUATION OF BACTERIAL ISOLATES IN THE CONTROL OF Plutella xylostella L. IN BROCCOLI

Mazetto Júnior,

Sene,

Iost

et al. 2018

Trop Subtrop Agroecosyst

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The diamondback moth (Plutella xylostella L.) is an insect that causes great losses in Brassica plantations, which may reach 100% loss in some cases. The most common method to control this pest is still the use of insecticide. However, its successive and arbitrary use has contributed to the development of insecticide resistance, and the study of alternative methods has become essential to successfully control the diamondback moth in broccoli. The objective of this study was to select isolates of rhizobacteria that act to control diamondback moth in broccoli. The experimental design was in randomized blocks, with three bacterial isolates [1 - Kluyvera ascorbata (EN4); 2 - Bacillus subtllis (R14); 3 - Bacillus cereus (C210) and 4 - Control (distilled water + spreader sticker)] tested with 5 repetitions in 20 m2 plots. Larval viability (LV), pupal viability (PV), larval stage duration (LD), pupal stage duration (PD), pupal weight (PW) and total mortality (TM) were evaluated. The rhizobacteria isolates performed better to reduce larval and pupal viability, larval and pupal duration, and increase total mortality, and can be used as a management option to complement the control strategies of the diamondback moth in broccoli.

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“…This damage on leaves forming the cabbage head results in loss of the external leaves, significantly reducing market weight and value. Thus, insecticide application is largely used for DBM control (Talekar & Shelton, ; Monnerat et al., ; Villas Bôas et al., ), but an alternative approach has been the adoption of resistant cruciferous species or cultivars (Barros & Vendramim, ; Thuler et al., ). The goal of such research has been to allow growers to gain DBM control by selecting resistant plant genotypes that have similar yield to current non‐resistant plant genotypes.…”

Section: Introductionmentioning

confidence: 99%

Influence of cabbage resistance and colour upon the diamondback moth and its parasitoid Oomyzus sokolowskii

Colares

Silva-Torres

Torres

et al. 2013

Entomologia Exp Applicata

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Host plant resistance and biological control are vital integrated pest management tools against the diamondback moth (DBM), Plutella xylostella (L.) (Lepidoptera: Plutellidae), but to date no study has investigated this system including the DBM parasitoid Oomyzus sokolowskii (Kurdjumov) (Hymenoptera: Eulophidae). We examined oviposition and development of P. xylostella exposed to two commercial cabbage cultivars (green ‘Chato de quintal’ and red ‘Roxo’) and possible effects upon O. sokolowskii. Under free‐choice tests, DBM females laid significantly more eggs on plants of the green cabbage, even though several population growth parameters showed that DBM developed better on the red cabbage. Furthermore, a laboratory free‐choice test with artificially green‐ and red‐painted kale leaf discs demonstrated a similar oviposition preference pattern, with green colour being preferred over red colour. The preference was apparently visually mediated; olfactometer tests showed similar attraction of moths to both green and red cultivars in choice and non‐choice tests. Host plant cultivar had no statistically significant effect on female parasitoid behaviour towards DBM larvae, nor on parasitoid numbers or longevity. Moreover, wasps parasitizing DBM larvae reared on the green cultivar developed more quickly and in larger numbers per parasitized larva. Thus, feeding on green cabbage rather than red does not hinder, and potentially even enhances, control of DBM by O. sokolowskii. On a practical level, these results suggest that intercalating green cabbage cultivars as a trap crop might help protect more profitable red cultivars in growing fields.

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Inseticidas para o controle da traça-das-crucíferas e impactos sobre a população natural de parasitóides

Cited by 11 publications

References 9 publications

Locomotor response of diamondback moth (Plutella xylostella) populations to a neurotoxic insecticide under laboratory conditions

Locomotor response of diamondback moth (Plutella xylostella) populations to a neurotoxic insecticide under laboratory conditions

EVALUATION OF BACTERIAL ISOLATES IN THE CONTROL OF Plutella xylostella L. IN BROCCOLI

Influence of cabbage resistance and colour upon the diamondback moth and its parasitoid Oomyzus sokolowskii

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