Monitoring of Resistance to New Chemistry Insecticides in Spodoptera litura (Lepidoptera: Noctuidae) in Pakistan

Ahmad, Mushtaq; Mehmood, Rashid

doi:10.1093/jee/tov085

Cited by 62 publications

(48 citation statements)

References 51 publications

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“…Resistance to cypermethrin and deltamethrin is common among arthropod pests worldwide. In Pakistan resistance against these commonly used insecticides in various crop pests such as in Spodoptera exigua (Hübner) (Lepidoptera: Noctuidae), Brevicoryne brassicae (L.) (Hemiptera: Aphididae), Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae), Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) and Bemisia tabaci (Gennadius) (Homoptera: Aleyrodidae) has been reported by many scientists [ 28 , 29 , 30 , 31 , 32 , 33 , 34 ]. So far only one published record of cypermethrin resistance against R .…”

Section: Discussionmentioning

confidence: 99%

Resistance to commonly used insecticides and phosphine fumigant in red palm weevil, Rhynchophorus ferrugineus (Olivier) in Pakistan

et al. 2018

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The red palm weevil Rhynchophorus ferrugineus (Olivier) is an important pest of date palms in many regions of the world. This paper reports the first survey of insecticide resistance in field populations of R. ferrugineus in Pakistan which were collected from seven date palm growing areas across Punjab and Khyber Pakhtunkhwa (KPK) provinces, Pakistan. The resistance was assessed by the diet incorporation method against the formulated commonly used chemical insecticides profenophos, imidacloprid, chlorpyrifos, cypermethrin, deltamethrin, spinosad, lambda-cyhalothrin and a fumigant phosphine. Elevated levels of resistance were recorded for cypermethrin, deltamethrin and phosphine after a long history of insecticide use in Pakistan. Resistance Ratios (RRs) were 63- to 79-fold for phosphine, 16- to 74-fold for cypermethrin, 13- to 58-fold for deltamethrin, 2.6- to 44-fold for profenophos, 3- to 24-fold for chlorpyrifos, 2- to 12-fold for lambda-cyhalothrin and 1- to 10-fold for spinosad compared to a susceptible control line. Resistant R. ferrugineus populations were mainly found in southern Punjab and to some extent in KPK. The populations from Bahawalpur, Vehari, Layyah and Dera Ghazi Khan were most resistant to chemical insecticides, while all populations exhibited high levels of resistance to phosphine. Of the eight agents tested, lower LC50 and LC90 values were recorded for spinosad and lambda-cyhalothrin. These results suggest that spinosad and lambda-cyhalothrin exhibit unique modes of action and given their better environmental profile, these two insecticides could be used in insecticide rotation or assist in phasing out the use of older insecticides. A changed pattern of both insecticides can be used sensibly be recommended without evidence of dose rates and frequencies used.

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Section: Discussionmentioning

confidence: 99%

Resistance to commonly used insecticides and phosphine fumigant in red palm weevil, Rhynchophorus ferrugineus (Olivier) in Pakistan

et al. 2018

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“…Resistance to insecticides from synthetic origin including conventional and new chemistry chemicals has been reported in S. litura populations from Pakistan, India, China and United States [ 18 , 19 ]. Resistance development led to outbreaks by S. litura and failures of the crop around the world [ 3 ], particularly in Asia including India, Pakistan [ 20 , 21 ] and China [ 22 ]. Hence, the management of this pest has become increasingly difficult all over the world.…”

Section: Introductionmentioning

confidence: 99%

Temperature-Dependent Functional Response of Harmonia axyridis (Coleoptera: Coccinellidae) on the Eggs of Spodoptera litura (Lepidoptera: Noctuidae) in Laboratory

Islam

Shah

et al. 2020

Insects

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Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae) is a major pest of several economically important crops with worldwide distribution. Use of insecticides is the principal strategy for its management, which has subsequently led to insecticide resistance and control failures. Functional response of Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae) at larval and adult stages was evaluated in this study, using S. litura eggs as the prey at various temperatures varying between 15 and 35 °C. Based on logistic model findings, linear parameters of various predatory stages of H. axyridis at various temperatures were significantly negative, which indicate a type II functional response. The theoretical maximum number (T/Th) of eggs consumed increased with increasing temperature for all predatory stages. According to the random predator equation, the coefficients of attack rate increased and that of handling time decreased as the temperature increased. The 4th instar and adult stages were superior candidates for biocontrol of the target prey, typically at higher temperatures. The maximum attack rate (0.546 ± 0.058 h) and lowest handling time (0.189 ± 0.004 h−1) were exhibited by the females at 30 and 35 °C, respectively, whereas these parameters were inferior for early instars. These findings clearly depict that the 4th instar and adult predators are efficient egg consumers and can serve as potential suppressors of S. litura field populations. The limitations of the predictions formulated by functional response trials are also discussed.

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“…In vivo propagation is still the most promising method for the mass production of baculoviruses, because it is reliable and effective. The polyphagous and multivoltine characteristics of S. litura made it a recalcitrant agricultural pest resistant to multiple classes of synthetic insecticides (Shad et al, 2010;Ahmad & Mehmood, 2015;Sang et al, 2016). After inoculation, the moribund/dead insects are harvested for virus extraction.…”

Section: Introductionmentioning

confidence: 99%

“…The common cutworm S. litura is widely distributed in Russia, Asia, and Oceania, where they feed on a range of economically important crops including cotton, lettuce, maize, tobacco, and papaya (Wei et al, 2004;Meagher et al, 2008). The polyphagous and multivoltine characteristics of S. litura made it a recalcitrant agricultural pest resistant to multiple classes of synthetic insecticides (Shad et al, 2010;Ahmad & Mehmood, 2015;Sang et al, 2016). Even the most effective insecticides have lost their potency, leading to sporadic outbreaks of S. litura in several countries.…”

Section: Introductionmentioning

confidence: 99%

Effect of juvenile hormone and pyriproxyfen treatments on the production ofSpodoptera lituranuclear polyhedrosis virus

Liao

Kuo

Shih

et al. 2016

Entomologia Exp Applicata

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Efficient production is essential for developing baculoviruses into marketable bioinsecticides. In this study, we evaluated how juvenile hormone (JH) III and the JH analog pyriproxyfen affected the production efficiency of Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae) Nucleopolyhedrovirus (SpltNPV) in SpltNPV-inoculated early sixth instars. Both the JH III and pyriproxyfen treatments significantly enhanced the body size and weight of S. litura, which resulted in a 1.5-to 2-fold increase in the production of occlusion bodies (OBs). The OBs obtained from JH-and pyriproxyfen-treated larvae were as pathogenic as those produced in untreated larvae. More importantly, JH-or pyriproxy-fen-treated larvae consumed less than twice the amount of food consumed by two untreated larvae. These results indicate that JH and pyriproxyfen treatments improve the production efficiency of SpltNPV in S. litura. SpltNPV infection affected the development of S. litura not only as larvae, but also during subsequent growth stages and generations.

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Monitoring of Resistance to New Chemistry Insecticides in Spodoptera litura (Lepidoptera: Noctuidae) in Pakistan

Cited by 62 publications

References 51 publications

Resistance to commonly used insecticides and phosphine fumigant in red palm weevil, Rhynchophorus ferrugineus (Olivier) in Pakistan

Resistance to commonly used insecticides and phosphine fumigant in red palm weevil, Rhynchophorus ferrugineus (Olivier) in Pakistan

Temperature-Dependent Functional Response of Harmonia axyridis (Coleoptera: Coccinellidae) on the Eggs of Spodoptera litura (Lepidoptera: Noctuidae) in Laboratory

Effect of juvenile hormone and pyriproxyfen treatments on the production ofSpodoptera lituranuclear polyhedrosis virus

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