Competition between the phytophagous stink bugs <i>Euschistus heros</i> and <i>Piezodorus guildinii</i> in soybeans

Tuelher, Edmar S.; Silva, Éder H; Hirose, Edson; Guedes, Raul Narciso C.; Oliveira, Eugênio E.

doi:10.1002/ps.4306

Cited by 31 publications

(31 citation statements)

References 46 publications

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“…Examination of insecticidal stress on non‐targeted pest species is lacking, despite its potential practical management consequences (Ripper, ; Hardin et al ., ; Guedes & Cutler, ). We therefore explored effects of insecticides used in soybean for controlling caterpillars and whiteflies on the mating behaviour and sexual fitness of the Neotropical brown stink bug, a pest of increasing status in Argentina and Brazil (Panizzi, ; Bueno et al ., ; Panizzi & Lucini, ; Tuelher et al ., ).…”

Section: Discussionmentioning

confidence: 97%

Non‐targeted insecticidal stress in a pest species: insecticides, sexual fitness and hormesis in the Neotropical brown stink bug Euschistus heros

Santos

Krüger

Turchen

et al. 2018

Annals of Applied Biology

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An understudied aspect of insecticides is their stress on non-targeted pest species. Sublethal insecticidal stress may elicit a range of protective and non-protective responses that may affect behaviour and sexual fitness of the exposed insects, which may lead to negative, neutral or stimulatory (i.e. hormetic) responses. We assessed the behavioural response of the Neotropical brown stink bug, Euschistus heros, a soybean pest in the Neotropical region with increasing pest status, following exposure to chlorantraniliprole, pyriproxyfen and spinosad, insecticides commonly used against soybean caterpillars and whiteflies. Both individuals, or only the male or female of each mating pair, were exposed. Reproductive behaviour and output were measured to determine insecticide-and gender-mediated fitness. We found that treatment scenario significantly affected mating behaviour, and that the duration of some behaviours were significantly affected. Chlorantraniliprole and pyriproxyfen reduced latency to mate, while spinosad increased this behaviour. Insecticide exposure also decreased the interacting time of each couple and male antennation of the female. Fertility table analyses of exposed couples indicated negligible effect of pyriproxyfen exposure, while spinosad extended generation time and reduced net reproductive rate, leading to lower rates of population growth of the brown stink bug. In contrast, chlorantraniliprole led to only a slight extension on the generation time, but enhanced net reproductive rate of the stink bug leading to higher rates of population growth; no effects on sexual fitness were observed, as both compounds exhibited similar effect on females and males. Latency to mate correlated significantly with the population growth rate. The positive response to chlorantraniliprole exposure reinforces the notion that sublethal exposure of the brown stink bug to this insecticide may lead to stimulatory (hormetic) response favouring its outbreaks in soybean fields.

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Section: Discussionmentioning

confidence: 97%

Non‐targeted insecticidal stress in a pest species: insecticides, sexual fitness and hormesis in the Neotropical brown stink bug Euschistus heros

Santos

Krüger

Turchen

et al. 2018

Annals of Applied Biology

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“…In the new scenario of no-tillage/ multiple cropping, it has dramatically increased, expanding its range into most of the Brazilian territory and even invading Argentina (Saluso et al 2011). Recent studies conducted in the field indicated that E. heros is a superior competitor compared to P. guildinii in soybean (Tuelher et al 2016). Moreover, E. heros is considered more tolerant to insecticides than P. guildinii or N. viridula (Willrich et al 2003, Snodgrass et al 2005, which likely contributes to the prevalence of E. heros.…”

Section: Stink Bug Inter-specific Competitionmentioning

confidence: 99%

What Happened to Nezara viridula (L.) in the Americas? Possible Reasons to Explain Populations Decline

Panizzi

Lucini

2016

Neotrop Entomol

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Once abundant in the Americas, the southern green stink bug Nezara viridula (L.) has gradually declined in numbers. Until the 1990s, it was considered the main pest of major crops such as soybean, Glycine max (L.) Merrill, particularly in southern Brazil and southern USA, as well as Argentina, Uruguay, and other countries. In the past 15+ years, a dramatic population decrease was observed to the point of now being considered a secondary pest in these referred countries. In this article, we list and discuss possible reasons which explain the decline in N. viridula population in the Americas. These factors include the following: (1) the steady increase of herbicides used in no-tillage/multiple cropping systems affecting potential hosts such as weeds in crop fields and nearby natural vegetation; (2) the change in cultivation systems, mostly in the Neotropics, favoring other species more adapted to exploit crops in modern day agriculture; (3) competition among several species of stink bugs that colonize major crops; (4) the growing impact of several species of egg parasitoids, some of them laboratory reared and released in crop fields, and other natural enemies (parasitoids and predators); and (5) the impact of global climate change affecting its distribution and biology.

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“…[21][22][23][24] This species is the prevailing stink bug pest species of South American soybean-growing fields. 23,25,26 The frequent overuse of neonicotinoid insecticides against this species leads to unintended sublethal effects 27,28 and control failures due to insecticide resistance. [21][22][23]29 In this study, we assessed the toxicity and evaluated whether the sublethal exposure of E. heros to imidacloprid [at 0.126 μg active ingredient (a.i.)…”

Section: Introductionmentioning

confidence: 99%

Synergism and unintended effects of the association between imidacloprid and sodium chloride (NaCl) on the management of Euschistus heros

Rodrigues

Haddi

Campos

et al. 2020

Pest Management Science

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BACKGROUND: The use of insecticidal solutions containing sodium chloride (NaCl) has been proposed as a more environmentally friendly alternative to managing stink bug infestations of Neotropical soybean fields. The potential sublethal and undesirable effects of this practice have, however, been overlooked, especially with novel insecticides. Here, we have evaluated experimentally whether the addition of NaCl (0.5% w/v) to imidacloprid-containing solutions could alter insecticide toxicity and modify the reproductive responses of the Neotropical brown stink bug Euschistus heros. RESULTS: Adding NaCl to imidacloprid solutions significantly increased imidacloprid toxicity against E. heros. The exposure to E. heros to sublethal concentrations of imidacloprid affected the insect's mating abilities in a concentration-dependent manner. The addition of NaCl to solutions containing imidacloprid at concentrations as low as 0.126 ∼g a.i. cm −2 (i.e. the equivalent to 3% of field rate recommendation) also impacted the sexual behavior of E. heros, reducing mating duration. NaCl-exposed stink bugs, however, exhibited higher fecundity and fertility rates than those insects that were unexposed to NaCl or those that were exposed to sublethal levels of imidacloprid only. CONCLUSIONS: The addition of low amounts of NaCl resulted in a higher toxicity of imidacloprid. This practice, however, can also lead to undesirable effects as increasing reproductive output of E. heros that can potentially compromise the management of these insect pests.

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Competition between the phytophagous stink bugs Euschistus heros and Piezodorus guildinii in soybeans

Abstract: The higher abundance of E. heros in neotropical soybean fields seems to result from higher competitive ability than its heterospecific competitor P. guildinii, which may prevent the higher losses caused by P. guildinii. © 2016 Society of Chemical Industry.

Cited by 31 publications

References 46 publications

Non‐targeted insecticidal stress in a pest species: insecticides, sexual fitness and hormesis in the Neotropical brown stink bug Euschistus heros

Non‐targeted insecticidal stress in a pest species: insecticides, sexual fitness and hormesis in the Neotropical brown stink bug Euschistus heros

What Happened to Nezara viridula (L.) in the Americas? Possible Reasons to Explain Populations Decline

Synergism and unintended effects of the association between imidacloprid and sodium chloride (NaCl) on the management of Euschistus heros

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