Lethal and sublethal effects of two new insecticides spirotetramat and flupyradifurone in comparison to conventional insecticide deltamethrin on Trichogramma evanescens (Hymenoptera: Trichogrammatidae)

Tabebordbar, Fatemeh; Shishehbor, Parviz; Ziaee, Masumeh; Sohrabi, Fariba

doi:10.1016/j.aspen.2020.09.008

Cited by 19 publications

(9 citation statements)

References 29 publications

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“…As a result, evaluating the effects of insecticides (both lethal and sublethal) on bio-control agents is critical. 13,14 Moreover, the assessment of lethal and sublethal effects of insecticides on parasitoids and predators is a center of attention since it has a huge impact on the biological and demographic traits of the bio-agents. 2,[15][16][17][18] The effect can either be stimulating [example: multigenerational sublethal imidacloprid exposure enhanced the fitness traits on Trichogramma chilonis Ishii (Hymenoptera: Trichogrammatidae) 2 ] or reducing [example: transgenerational exposure to sublethal concentrations of chlorfenapyr, thiodicarb, and flupyradifurone reduced the biological traits of Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) 15 ].…”

Section: Introductionmentioning

confidence: 99%

“…The indiscriminate use of insecticides has affected the natural enemies. As a result, evaluating the effects of insecticides (both lethal and sublethal) on bio‐control agents is critical 13,14 . Moreover, the assessment of lethal and sublethal effects of insecticides on parasitoids and predators is a center of attention since it has a huge impact on the biological and demographic traits of the bio‐agents 2,15–18 .…”

Section: Introductionmentioning

confidence: 99%

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Functional response of an egg parasitoid,Trichogramma chilonisIshii to sublethal imidacloprid exposure

Ray

Gowda

Budhlakoti

et al. 2023

Pest Management Science

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BACKGROUNDThe effectiveness of a biological control agent depends on how well it can control pests and how compatible it is with pesticides. Therefore, we reported the multigenerational effect of a commonly used insecticide, imidacloprid, on the functional response of a widely acclaimed egg parasitoid, Trichogramma chilonis Ishii, to different densities of the host Corcyra cephalonica Stainton eggs. The study investigated the outcomes of the median lethal concentration (LC50) and sublethal concentrations (LC5, LC30), along with control treatments for five continuous generations (F1 to F5).RESULTSThe results showed that the F5 generation of LC30, both of the F1 and F5 generations of LC50, and the control all had a Type II functional response. A Type I functional response was exhibited for the F1 generation of LC30 and both generations of LC5. The attack rate on host eggs treated with LC5 and LC30 did not change (decrease) with the shift in the type of functional response as compared to the control. A significant increase in the searching efficiency (a) was observed in the later generation (F5) under the exposure of LC5 and LC30 imidacloprid concentrations. A lower handling time (Th) in both generations of the LC5 followed by LC30 treated individuals was observed when compared with the control and LC50 treatments. The per capita parasitization efficiency (1/Th) and the rate of parasitization per handling time (a/Th) were also considerably higher in both the generations of LC5 and LC30 than in the control and LC50, thereby implying positive effects of imidacloprid on the parasitization potential of T. chilonis.CONCLUSIONAltogether, these multigenerational outcomes on the functional response of T. chilonis could be leveraged to control the intractable lepidopteran pests under the mild exposure of imidacloprid in integrated pest management (IPM) programs as well as in the mass rearing of the parasitoid, T. chilonis. © 2023 Society of Chemical Industry.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Functional response of an egg parasitoid,Trichogramma chilonisIshii to sublethal imidacloprid exposure

Ray

Gowda

Budhlakoti

et al. 2023

Pest Management Science

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“…Based on IOBC standards, flupyradifurone is often classified as harmless to Trichogramma after a 24-h exposure [ 30 ]. Iost Filho et al [ 31 ] and Costa et al [ 32 ] found that flupyradifurone did not affect the emergence and parasitism rate of Trichogramma pretiosum Riley, 1879.…”

Section: Discussionmentioning

confidence: 99%

“…The parasitism of the offspring was higher than their mothers', and the emergence of F2 was above 80% in all treatments. This can be explained by the pre-imaginal conditioning also found by [28] and [30]. Pre-imaginal conditioning could also be termed "Hopkins' host selection principle", i.e., a species that reproduces in two or more hosts will prefer to continue reproducing in the host to which it is most adapted [37].…”

Section: Discussionmentioning

confidence: 99%

Is Integrated Management of Gymnandrosoma aurantianum Possible with Trichogramma atopovirilia and Novel Products Used in Citrus Orchards in Brazil?

Cantori

Filho

Pazini

et al. 2023

Insects

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In Brazil, the citrus fruit borer, Gymnandrosoma aurantianum Lima, 1927, is a serious pest in orange orchards, causing an annual loss of 80 million US dollars, and is managed with multiple insecticide applications, often 56 in a single season. On the other hand, the parasitoid wasp Trichogramma atopovirilia Oatman & Platner, 1983 has the potential for controlling G. aurantianum by attacking its eggs. Considering the intensive insecticide applications in citrus orchards in Brazil to control the large complex of pests, especially Diaphorina citri Kuwayama, 1908, evaluation of the harmful effects of insecticides on T. atopovirilia is important to maximize efficiency in managing G. aurantianum. Here, we tested the effects of new products used in citrus orchards (cyantraniliprole, cyantraniliprole + abamectin, abamectin, sulfoxaflor, spinetoram, flupyradifure, and Cordyceps fumosorosea (Wize) Kepler, B. Shrestha & Spatafora) on adults and pupae of T. atopovirilia. Of the insecticides tested, spinetoram caused the highest impacts on T. atopovirilia parasitism, longevity, emergence, and mortality. The other products caused more sublethal than lethal effects and were classified as 1 and/or 2 in the IOBC/WPRS classification. Abamectin, cyantraniliprole, cyantraniliprole + abamectin, and the entomopathogenic fungus C. fumosorosea were classified as short-lived. Except for spinetoram, these products were classified as selective. In this study, spinetoram was considered harmful to T. atopovirilia and, therefore, should be managed carefully in IPM programs combining this parasitoid. In order to safely use this insecticide, one should respect the interval of release of the parasitoid, which is 21 days after its spraying. The novel products tested, cyantraniliprole, cyantraniliprole + abamectin, abamectin, sulfoxaflor, and the entomopathogenic fungi C. fumosorosea were selective and non-persistent to T. atopovirilia. These products are possible replacements for non-selective insecticides to achieve higher control from both chemical and biological tools.

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“…have traditionally been thought to be incompatible as pesticides negatively impact the parasitoids’ fitness in agroecosystems. An example of this scenario was documented by Tabebordbar et al (2020) that Metasystox, dichlorodiphenyltrichloroethane (DDT), and Metasystox negatively affected Trichogramma evanescens by decreasing longevity and fecundity, as well as increasing adult mortality after their emergence.…”

Section: Hymenopteramentioning

confidence: 99%

Fitness costs of resistance to insecticides in insects

Gul,

Gadratagi,

Güncan

et al. 2023

Front. Physiol.

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The chemical application is considered one of the most crucial methods for controlling insect pests, especially in intensive farming practices. Owing to the chemical application, insect pests are exposed to toxic chemical insecticides along with other stress factors in the environment. Insects require energy and resources for survival and adaptation to cope with these conditions. Also, insects use behavioral, physiological, and genetic mechanisms to combat stressors, like new environments, which may include chemicals insecticides. Sometimes, the continuous selection pressure of insecticides is metabolically costly, which leads to resistance development through constitutive upregulation of detoxification genes and/or target-site mutations. These actions are costly and can potentially affect the biological traits, including development and reproduction parameters and other key variables that ultimately affect the overall fitness of insects. This review synthesizes published in-depth information on fitness costs induced by insecticide resistance in insect pests in the past decade. It thereby highlights the insecticides resistant to insect populations that might help design integrated pest management (IPM) programs for controlling the spread of resistant populations.

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Lethal and sublethal effects of two new insecticides spirotetramat and flupyradifurone in comparison to conventional insecticide deltamethrin on Trichogramma evanescens (Hymenoptera: Trichogrammatidae)

Cited by 19 publications

References 29 publications

Functional response of an egg parasitoid,Trichogramma chilonisIshii to sublethal imidacloprid exposure

Functional response of an egg parasitoid,Trichogramma chilonisIshii to sublethal imidacloprid exposure

Is Integrated Management of Gymnandrosoma aurantianum Possible with Trichogramma atopovirilia and Novel Products Used in Citrus Orchards in Brazil?

Fitness costs of resistance to insecticides in insects

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