Effect of Fenvalerate-20EC on Sericigenous Insects

Vyjayanthi, N.; Subramanyam, M. V. V.

doi:10.1006/eesa.2002.2228

Cited by 28 publications

(4 citation statements)

References 17 publications

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“…The quality of mulberry leaves is the major factor that affects the quality and quantity of cocoons produced by the silkworm [ 5 ]. Generally, the toxic stress condition of insecticides alters, the metabolic function of the silkworm to satisfy the required energy demands, which may drastically reduce the silkworm weight.…”

Section: Resultsmentioning

confidence: 99%

“…As a result, the effect of various substances as potential pesticides on silkworm has become an interesting issue. Some studies on the effect of pesticides and plant extracts on B. mori have been reported, especially dealing with toxicity, retardation of development and growth, mortality and food utilization [ 3 , 4 , 5 , 6 ]. In addition, the silkworm is very sensitive to pesticide and can be employed as an indicator to evaluate the impact of substances as potential pesticides on environmental safety, which is part of the pesticide registration requirements in China and Japan [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Venom from the Jellyfish Nemopilema nomurai on the Silkworm Bombyx mori L.

Chen

et al. 2015

Toxins

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The silkworm Bombyx mori L. (B. mori) has a significant impact on the economy by producing more than 80% of the globally produced raw silk. The exposure of silkworm to pesticides may cause adverse effects on B. mori, such as a reduction in the production and quality of silk. This study aims to assay the effect of venom from the jellyfish Nemopilema nomurai on growth, cuticle and acetylcholinesterase (AChE) activity of the silkworm B. mori by the leaf dipping method. The experimental results revealed that the four samples caused neither antifeeding nor a lethal effect on B. mori. The sample SFV inhibited B. mori growth after 6 days of treatment in a dose-dependent manner. The samples SFV, DSFV and Fr-1 inhibited the precipitation and synthesis of chitin in the cuticle after 12 and 14 days of treatment. In the case of the four samples, the AChE was significantly improved after 14 days of treatment.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Venom from the Jellyfish Nemopilema nomurai on the Silkworm Bombyx mori L.

Chen

et al. 2015

Toxins

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“…Earlier studies have also shown glucose increases after treatment with chemicals like pyriproxyfen, fenitrothion, ethion, and azadirachtin ( Mukherjee et al 1993 ; Nath 2003 ; Etebari et al 2005 ). The increase in glucose may be due to enhanced trehalase activity because it was reported that trehalase activity increased in the midgut of silkworms treated with insecticides ( Vyjayanthi and Subramanyam 2002 ).…”

Section: Discussionmentioning

confidence: 99%

Effect of Milk Thistle,Silybium marianum, Extract on Toxicity, Development, Nutrition, and Enzyme Activities of the Small White Butterfly,Pieris rapae

Hasheminia

Sendi

Talebi

et al. 2013

Journal of Insect Science

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The methanolic extract of milk thistle, Silybium marianum L. (Asterales: Asteraceae), was investigated for its effects on the mortality, growth, feeding indices, enzymatic activity, and levels of non-enzymatic molecules of the small white butterfly, Pieris rapae L. (Lepidoptera: Pieridae), a pest of cruciferous plants. Feeding indices including approximate digestibility (AD), efficiency of conversion of digested food (ECD), efficiency of conversion of ingested food (ECI), relative growth rate (RGR), and relative consumption rate (RCR) were measured. These indices were variously affected: the RGR, RCR, and AD decreased, but the ECD and ECI increased. The LC50 and LC25 values were estimated as 2.94% and 1.20%, respectively. At the lowest concentration of S. marianum extract (0.625%), the feeding deterrence index was 40.48%. The duration of the pupal stage and the rate of larval growth decreased. These changes may be due to alterations in metabolic activity, such as the increase in alkaline phosphatase activity, which is likely involved in detoxification. Additionally, the activities of alanine aminotransferase and aspartate aminotransferase, which are key components of amino acid catabolism, decreased. The amount of glucose (an energy source) and uric acid (the excreted end product) increased, while total protein (another energy source) and cholesterol decreased. These results indicate that this plant possesses potential secondary metabolites that may be useful for the future study of the control of insect pests.

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“…Silkworms are an important commercial insect, but they are continually threatened by pyrethroid pesticides; however, little research has explored the mechanism conferring pyrethroid resistance in silkworms. Relevant reports, such as those on fenvalerate-20EC (Vyjayanthi & Subramanyam, 2002) and Bombyx mori epsilon-class glutathione S-transferases (BmGSTE2) (Zhou et al, 2015), have mainly focused on physiological phenotypic statistics and associated gene-function studies. Thus, it is vital to further explore the mechanism of pyrethroid resistance in silkworms, which would benefit sericulture by improving the protection of silkworms from pyrethroids.…”

Section: Introductionmentioning

confidence: 99%

Fumarate mitigates disruption induced by fenpropathrin in the silkworm Bombyx mori (Lepidoptera): A metabolomics study

et al. 2022

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The silkworm Bombyx mori L. is a model organism of the order Lepidoptera. Understanding the mechanism of pesticide resistance in silkworms is valuable for Lepidopteran pest control. In this study, comparative metabolomics was used to analyze the metabolites of 2 silkworm strains with different pesticide resistance levels at 6, 12, and 24 h after feeding with fenpropathrin. Twenty‐six of 27 metabolites showed significant differences after fenpropathrin treatment and were classified into 6 metabolic pathways: glycerophospholipid metabolism, sulfur metabolism, glycolysis, amino acid metabolism, the urea cycle, and the tricarboxylic acid (TCA) cycle. After analyzing the percentage changes in the metabolic pathways at the 3 time points, sulfur metabolism, glycolysis, and the TCA cycle showed significant responses to fenpropathrin. Confirmatory experiments were performed by feeding silkworms with key metabolites of the 3 pathways. The combination of iron(II) fumarate + folic acid (IF‐FA) enhanced fenpropathrin resistance in silkworms 6.38 fold, indicating that the TCA cycle is the core pathway associated with resistance. Furthermore, the disruption of several energy‐related metabolic pathways caused by fenpropathrin was shown to be recovered by IF‐FA in vitro. Therefore, IF‐FA may have a role in boosting silkworm pesticide resistance by modulating the equilibrium between the TCA cycle and its related metabolic pathways.

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Effect of Fenvalerate-20EC on Sericigenous Insects

Cited by 28 publications

References 17 publications

Effect of Venom from the Jellyfish Nemopilema nomurai on the Silkworm Bombyx mori L.

Effect of Venom from the Jellyfish Nemopilema nomurai on the Silkworm Bombyx mori L.

Effect of Milk Thistle,Silybium marianum, Extract on Toxicity, Development, Nutrition, and Enzyme Activities of the Small White Butterfly,Pieris rapae

Fumarate mitigates disruption induced by fenpropathrin in the silkworm Bombyx mori (Lepidoptera): A metabolomics study

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