Impact of insect growth regulators on the predator Ceraeochrysa cincta (Schneider) (Neuroptera: Chrysopidae)

Rugno, Gabriel Rodrigo; Zanardi, Odimar Zanuzo; Cuervo, Johanna Bajonero; Morais, Marcos de Oliveira; Yamamoto, Pedro Takao

doi:10.1007/s10646-016-1651-9

Cited by 29 publications

(9 citation statements)

References 57 publications

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“…Notwithstanding, certain authors have reported the opposite result (Biondi et al, 2015;Moscardini et al, 2013;Schneider et al, 2004). In particular, and in keeping with the results of the present study, Rugno et al (2016) detected adverse effects of pyriproxyfen and other IGRs on the survival of Ceraeochrysa cincta Schneider (Chrysopidae: Neuroptera).…”

Section: Effects On the Developmental Stages After Pesticide Exposuresupporting

confidence: 90%

“…Previous studies had reported that exposure to spinosad and cypermethrin caused a shortening of the egg period of C. externa ; whereas fenoxycarb and pyriproxyfen had been found to lengthen of the developmental time of eggs in C. rufilabris (Chen and Liu, 2002;Liu and Chen, 2001), as did the action of imidacloprid in the pest predator Apolygus lucorum Meyer-Dur (Hemiptera: Miridae) (Tan et al, 2012). In contrast, Rugno et al (2016) reported that pyriproxyfen caused no effects on the duration of the larval period in C. cincta, while Li et al (2015) observed a lengthening of certain larval instars of Serangium japonicum Chapin (Coleoptera: Coccinellidae) after exposure to pyriproxyfen.…”

Section: Effects On Immature Developmental Timementioning

confidence: 94%

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Comparative susceptibility of two Neotropical predators, Eriopis connexa and Chrysoperla externa, to acetamiprid and pyriproxyfen: Short and long-term effects after egg exposure

Rimoldi

Fogel

Ronco

et al. 2017

Environmental Pollution

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Compatibility assessments between selective insecticides and the natural enemies of pests are essential for integrated-pest-management programs. Chrysoperla externa and Eriopis connexa are two principal Neotropical predators of agricultural pests whose conservation in agroecosystems requires a toxicity evaluation of pesticides to minimize the impact on those beneficial insects on the environment. The objective of this work was to evaluate the toxicity of the insecticides pyriproxyfen and acetamiprid on C. externa and E. connexa eggs exposed to the maximum recommended field concentrations of each along with three successive dilutions. The survival and the immature developmental time were assessed daily until adulthood and the mean survival time calculated over a 10-day period. The cumulative survival of E. connexa was reduced at all concentrations of both insecticides, while that of C. externa was significantly decreased by ≥50 mg L of acetamiprid and ≥37.6 mg L of pyriproxyfen. In both species, the reductions occurred principally on the eggs and first larval instar. Survival curves, in general, differed from those of the controls, with the mean survival time of E. connexa being significantly shorter in insecticides treatments than that of the controls. Certain concentrations of each of the insecticide lengthened the egg and first-larval-instar developmental periods of E. connexa and C. externa, respectively. Also, pyriproxyfen reduced the first-larval-instar period and lengthened the fourth of E. connexa. Acetamiprid was more toxic to E. connexa than to C. externa at the two highest concentrations. Conversely, at those same concentrations of pyriproxyfen, the relative toxicity to the two species was reversed. The present work represents the first investigation on the comparative susceptibility of two relevant Neotropical biological control agents to acetamiprid and pyriproxyfen. Also, it highlights the necessity of assessing long-term effects in the compatibility studies between natural enemies of agricultural pests and insecticides.

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Section: Effects On the Developmental Stages After Pesticide Exposuresupporting

confidence: 90%

Section: Effects On Immature Developmental Timementioning

confidence: 94%

Comparative susceptibility of two Neotropical predators, Eriopis connexa and Chrysoperla externa, to acetamiprid and pyriproxyfen: Short and long-term effects after egg exposure

Rimoldi

Fogel

Ronco

et al. 2017

Environmental Pollution

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“…For T. radiata, buprofezin was slightly persistent. This result agrees with the findings reported by Rugno et al (2016) for the lacewing Ceraeochrysa cincta (Schneider) (Neuroptera: Chrysopidae). This insecticide is a chitin biosynthesis inhibitor type 1 (IGR) and affects immature stages more than adults.…”

Section: Discussionsupporting

confidence: 93%

Acute Toxicity of Fresh and Aged Residues of Pesticides to the Parasitoid Tamarixia radiata and to the HLB-Bacteria Vector Diaphorina citri

Beloti¹,

Alves²,

Moral³

et al. 2017

Neotrop Entomol

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One method for controlling the Asian citrus psyllid (ACP) Diaphorina citri Kuwayama, the vector of the putative causal agent of Huanglongbing, uses the parasitoid Tamarixia radiata (Waterston). However, the general intensive use of insecticides has reduced the numbers of this parasitoid. This study evaluated the effect of the residual action of 24 insecticides on T. radiata and also determined the differential toxicity of insecticides to D. citri and T. radiata, using three bioassays. In the first, when adults of the parasitoid were exposed to residues of the 24 insecticides, ten were considered short-life (class 1), six slightly persistent (class 2), five moderately persistent (class 3), and three insecticides were considered persistent (class 4), under the IOBC/WPRS classification system. The second bioassay evaluated the sublethal concentrations of the persistent insecticides (formetanate, dimethoate, spinosad). Increasing the concentrations of the insecticides increased the number that were classified as persistent. In the third bioassay, evaluation of the differential toxicity of eight insecticides to the ACP and the parasitoid showed that chlorpyrifos and bifenthrin were more harmful to T. radiata. Therefore, these two insecticides are not recommended for application at the time of parasitoid release. Cypermethrin, imidacloprid, and dimethoate caused higher mortality of D. citri and are most often recommended in IPM programs. The choice of an insecticide for the control of citrus pests must be made with care, aiming to preserve the natural enemies in the ecosystem, and thereby contribute to the success of biological control.

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“…Teflubenzuron prolonged the developmental time of nymphs of Macrolophus basicornis (Stal) (Hemiptera: Miridae) 72 . Buprofezin caused 25% mortality of the larvae and considerably reduced the fecundity and longevity of Ceraeochrysa cincta (Schneider) (Neuroptera: Chrysopidae) 73 …”

Section: Discussionmentioning

confidence: 99%

Toxicity assessment of two IGR insecticides on eggs and larvae of the ladybird Eriopis connexa

Noelia

Scorsetti²,

Minardi

et al. 2022

Pest Management Science

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BACKGROUND: Eriopis connexa is an important predator in the Neotropical region, associated with pests of economic relevance on horticultural crops in Argentina. The use of broad-spectrum insecticides could reduce the biodiversity of these natural enemies in agroecosystems and put at risk its conservation. New, selective "risk reduced" insecticides could be an alternative to conventional chemical control to promote sustainable agriculture. The goal of this work was to assess the lethal and sublethal effects of two insect growth regulator (IGR) insecticides on eggs and two larval instars of E. connexa exposed to insecticides. RESULTS: Pyriproxyfen and cypermethrin significantly affected egg hatching by 28.8% and 70.4%, respectively. Pyriproxyfen reduced the survival of larvae that emerged by ≈52% from Day (D3)3 after hatching and caused the lengthening of developmental time for both larval and pupal stages. By contrast, teflubenzuron did not reduce hatching and survival but shortened the developmental time of the pupae stage. Cypermethrin reduced the survival of 2 nd (L 2 ) and 4 th (L 4 ) larval instars by 36.4% and 74.6%, respectively, and lengthened the development time of L 2 . Pyriproxyfen lengthened the development time of L 4 and reduced the fecundity and fertility of females. Teflubenzuron reduced survival of L 2 and L 4 larval instars by 46.9% and 28.6%, respectively, and lengthened the total development time for the larval stage. In addition, teflubenzuron reduced the fecundity and fertility of females. CONCLUSIONS: Both eggs and larvae were susceptible to exposure to IGR, showing lethal and sublethal effects. This study highlights, once again, the higher toxicity of cypermethrin to E. connexa. The toxicity of both IGR insecticides could impair the performance of E. connexa as a biological control agent in agroecosystems.

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Impact of insect growth regulators on the predator Ceraeochrysa cincta (Schneider) (Neuroptera: Chrysopidae)

Cited by 29 publications

References 57 publications

Comparative susceptibility of two Neotropical predators, Eriopis connexa and Chrysoperla externa, to acetamiprid and pyriproxyfen: Short and long-term effects after egg exposure

Comparative susceptibility of two Neotropical predators, Eriopis connexa and Chrysoperla externa, to acetamiprid and pyriproxyfen: Short and long-term effects after egg exposure

Acute Toxicity of Fresh and Aged Residues of Pesticides to the Parasitoid Tamarixia radiata and to the HLB-Bacteria Vector Diaphorina citri

Toxicity assessment of two IGR insecticides on eggs and larvae of the ladybird Eriopis connexa

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