Acute Toxicity and Sublethal Effects of Fenpyroximate to Amblyseius swirskii (Acari: Phytoseiidae)

Lopez, Lorena; Smith, Hugh A.; Hoy, Marjorie A.; Bloomquist, Jeffrey R.

doi:10.1093/jee/tov033

Cited by 14 publications

(4 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…But, among these acaricides, only the concentrations of bifenazate and fenproximate were close to or slightly higher than their HRCs registered for other mite pests in Turkey. Similar to our results, some authors showed the compatibility of acequinocyl, bifenazate, fenproximate and hexythiazox with A. swirskii in different agricultural ecosystems (Fiedler & Sosnowska, 2012;Audenaert et al, 2014;Lopez et al, 2015). Although Masui et al (2014) noted that acequinocyl did not affect the population of A. swirskii in field studies in melon fields, the one third of acequinocyl HRC was found as slightly harmful for A. swirskii in our study.…”

Section: Discussionsupporting

confidence: 90%

The toxic effects of some acaricides on the tomato russet mite and its predator Amblyseius swirskii Athias-Henriot, 1962 (Acari: Phytoseiidae)

Kolcu

Kumral

2023

TED

View full text Add to dashboard Cite

The tomato russet mite, Aculops lycopersici (Massee, 1937) (Acari: Eriophyidae) is a common pest of tomatoes. The predatory mite, Amblyseius swirskii Athias-Henriot, 1962 (Acari: Phytoseiidae), can control A. lycopersici populations. To integrate biological and chemical control of A. lycopersici, side effects of the lethal concentrations of acaricides, as a predator, on A. swirskii should be considered. The lethal concentrations of 14 acaricides for A. lycopersici were determined under laboratory conditions at Bursa Uludağ University during 2017-2018. To understand the toxic impacts of the acaricides on juveniles and females of A. swirskii, the LC99 values for A. lycopersici of each acaricide were applied to A. swirskii. The reproduction reduction effects of the LC99 values were also assessed. Quite low concentrations of abamectin, milbemectin, pyridaben, azadirachtin and sulphur were found to be toxic for A. lycopersici. Based on the side effect scale, the LC99 values of abamectin, acequinocyl, bifenazate, fenproximate, fenbutatin oxide, hexythiazox, milbemectin and sulphur that killed A. lycopersici were found to be slightly toxic to both females and juveniles of A. swirskii. The results of this comparative toxicological study have showed that more field studies should be conducted to evaluate the effectiveness of using low concentrations of acaricides with A. swirskii in combination for controlling A. lycopersici.

show abstract

Section: Discussionsupporting

confidence: 90%

The toxic effects of some acaricides on the tomato russet mite and its predator Amblyseius swirskii Athias-Henriot, 1962 (Acari: Phytoseiidae)

Kolcu

Kumral

2023

TED

View full text Add to dashboard Cite

show abstract

“…In previous studies, many species of natural enemies and pesticides have been tested so far to corroborate the combination of chemical and biological control agents under laboratory conditions [ 38 – 42 ]. Moreover, numerous studies have focused on the importance of sublethal effects of pesticides on predatory mites [ 3 , 9 , 33 ]. On one hand, this is the first report on both pest mites and the predatory mites of the new pesticide SYP-9625.…”

Section: Discussionmentioning

confidence: 99%

Laboratory assays on the effects of a novel acaricide, SYP-9625 on Tetranychus cinnabarinus (Boisduval) and its natural enemy, Neoseiulus californicus (McGregor)

et al. 2018

View full text Add to dashboard Cite

ObjectiveTetranychus cinnabarinus (Boisduval) is an agricultural mite pest threatens crops throughout the world, causing serious economic loses. Exploring the effects of acaricides on predatory mites is crucial for the combination of biological and chemical control of T. cinnabarinus. Neoseiulus californicus (McGregor) is one of the principal natural enemies of T. cinnabarinus, which can be applied in protected agriculture. In this study, the effects of sublethal concentrations of a new acaricide, SYP-9625 on two mite species, and the effects of the application concentration on predatory mite, N. californicus were assessed. The aim of the present study was to evaluate the effect of SYP-9625 on life parameters and predation capacity of N. californicus based on the concentration-response bioassay of T. cinnabarinus to explor the application of the new acaricide with natural enemy N. californicus.MethodAll of the experiments were conducted under laboratory conditions [25 ± 1°C, 16: 8 h (L: D) and 75 ± 5% RH]. The sublethal concentrations LC10 (0.375μg/mL) and the LC30 (0.841μg/mL) against T. cinnabarinus and the application concentration (100μg/mL) against N. californicus were used to evaluate the effects of SYP-9625 on population parameters of N. californicus based on an age-stage, two-sex life table and its predation capacity by functional response.Resultcinnabarinus females treated with LC30 exhibited significantly reduced net reproductive rates (R0 = 11.02) in their offspring compared with females treated with LC10 (R0 = 14.96) and untreated females (R0 = 32.74). However, the intrinsic rate of increase (rm) and the finite rate of increase (λ) of N. californicus indicated that the application concentration of SYP-9625 had no significant negative effect on N. californicus eggs (rm = 0.277, λ = 1.319) compared to the control (rm = 0.292, λ = 1.338). Additionally, most population parameters of N. californicus showed a dose-dependent manner with the increase of the concentration of SYP-9625 against T. cinnabarinus. SYP-9625 also stimulated the control efficiency of N. californicus against immobile stages including eggs and larvae.ConclusionThis study demonstrated that sublethal concentrations of SYP-9625 can inhibit the population growth of T. cinnabarinus. In addition, the sublethal concentrations and the application concentration showed no effect on the population growth of N. californicus. These two advantages described above showed great commercial potential of this new acaricide based on population parameters of the two mite species and predation capacity of the predatory mite under laboratory conditions.

show abstract

Section: Methodsmentioning

confidence: 99%

“…To evaluate the sublethal effects of Envidor Speed on A. swiriskii, after treatment (modified leaf dip method; Helle and Overmeer, 1985) of bean leaf discs with sublethal concentrations (including LC 5 , LC 15, and LC 25 ), and distilled water (Lopez et al 2015;Saraiva et al 2020), allowed to dry for 2 h. Then 80 same-aged males and females (24 h-old) were transferred to the treated and untreated leaf discs of the bean. After 24 h, surviving females were separately moved onto the untreated leaf discs (4 cm in diameter).…”

Section: Life Table Assaymentioning

confidence: 99%

The effects of the abamectin and spirodiclofen mixture on life history and population parameters of Amblyseius swirskii

Mousavi

Kheradmand

Fathipour

et al. 2023

saa

View full text Add to dashboard Cite

In this study, three sublethal concentrations (LC5, LC15, and LC25) of Envidor®speed (Abamectin and Spirodiclofen mixture, 24% SC, Bayer co.) on the biological parameters of the predatory mite Amblyseius swirskii Athias-Heneroit (Acari: Phytoseiidae) fed on Tetranychus urticae Koch (Acari: Tetranychidae) was assessed based on the Two-sex life table theory under laboratory conditions (25 ± 1°C, 70 ± 5% RH and 16:8 (L: D) hours). The data were analyzed based on a two-sex life table procedure. Increasing the sublethal concentration did have a significant effect on some life table parameters. The total lifespan of both males and females treated mites had a decreasing trend, for the females, it increased from 22.10 days in LC25 treatment to 42.67 days in control. The oviposition days of the predatory mite had the most differences between the LC15 and LC25 treatments compared to LC5 and control. Based on our results, the total fecundity is also affected by the acaricidal doses, which changed from 19.10 eggs per individual in LC25 to 37.17 eggs per individual in control. The net reproductive rate (R0), as well as the gross reproductive rate (GRR), were all significantly reduced with increasing the acaricide concentration. The control treatment had the maximum value, and the higher concentration treatment (LC25) had the slowest value of R0 and GRR. On the contrary, the intrinsic rate of increase (r) and finite rate of increase (λ) showed no significant differences with the increasing concentration of acaricide from the control to LC25 treatments. Eventually, with due attention to the large range value of each LCs for predatory mites concerning recommended concentration for T. urticae based on the active ingredient, the recommended concentration of Envidorspeed in IPM programs is unobstructed.

show abstract

Acute Toxicity and Sublethal Effects of Fenpyroximate to Amblyseius swirskii (Acari: Phytoseiidae)

Cited by 14 publications

References 33 publications

The toxic effects of some acaricides on the tomato russet mite and its predator Amblyseius swirskii Athias-Henriot, 1962 (Acari: Phytoseiidae)

The toxic effects of some acaricides on the tomato russet mite and its predator Amblyseius swirskii Athias-Henriot, 1962 (Acari: Phytoseiidae)

Laboratory assays on the effects of a novel acaricide, SYP-9625 on Tetranychus cinnabarinus (Boisduval) and its natural enemy, Neoseiulus californicus (McGregor)

The effects of the abamectin and spirodiclofen mixture on life history and population parameters of Amblyseius swirskii

Contact Info

Product

Resources

About