130 results match your criteria novaluron


Statewide Efficacy Assessment of Insect Growth Regulators Against Aedes albopictus (Diptera: Culicidae) in Sabah, Malaysia: An Alternative Control Strategy?

J Med Entomol 2021 Aug 30. Epub 2021 Aug 30.

Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.

The efficacy of three groups of insect growth regulators, namely juvenile hormone mimics (methoprene and pyriproxyfen), chitin synthesis inhibitors (diflubenzuron and novaluron), and molting disruptor (cyromazine) was evaluated for the first time, against Aedes albopictus Skuse (Diptera: Culicidae) larvae from 14 districts in Sabah, Malaysia. The results showed that all field populations of Ae. albopictus were susceptible towards methoprene, pyriproxyfen, diflubenzuron, novaluron, and cyromazine, with resistance ratio values ranging from 0. Read More

View Article and Full-Text PDF

Improving the Safety and Acceptability of Autocidal Gravid Ovitraps (AGO Traps).

J Am Mosq Control Assoc 2021 06;37(2):61-67

Entomology and Ecology Team, Dengue Branch, DVBD, Centers for Disease Control and Prevention, 1324 Calle Canada, San Juan, PR 00920.

Gravid traps that collect eggs or adult mosquitoes use color, size, or volume as well as water or plant infusions as attractants. Biorational larvicides have been used to prevent these devices from producing adult mosquitoes within the traps. Results from field assays on the use of several biorational larvicides for various mosquito species have provided mixed results in terms of increased, neutral, or reduced attraction. Read More

View Article and Full-Text PDF

Behavioral and ultrastructural effects of novaluron on Aedes aegypti larvae.

Infect Genet Evol 2021 09 21;93:104974. Epub 2021 Jun 21.

Department of General Biology, Federal University of Viçosa, 36570-000 Viçosa, MG, Brazil. Electronic address:

Chitin synthesis inhibitors (CSI) are supposed to inhibit formation of chitin microfibrils in newly synthesized cuticle during molting process. Conversely, there has been comparatively few data on morphological effects of CSI on non-target insect organs. In this work, the effects of the CSI novaluron on behavior and midgut of A. Read More

View Article and Full-Text PDF
September 2021

Subterranean Termite (Coptotermes gestroi (Blattodea: Rhinotermitidae)) Colony Elimination Through Exposure to a Novaluron CSI Bait Formulation in Laboratory.

Authors:
Thomas Chouvenc

J Econ Entomol 2021 06;114(3):1249-1255

Entomology and Nematology Department, Ft. Lauderdale Research and Education Center, University of Florida, Institute of Food and Agricultural Sciences, Lauderdale, FL, USA.

The development of baits for subterranean termite control over the past 25 yr has provided cost-effective alternatives to liquid termiticide treatments. Current bait products use one of the few available benzoylurea chitin synthesis inhibitors (CSIs) labeled for subterranean termites. These insecticides are used because of their nonrepellency, their slow-acting mode of action, and their dose-independent lethal time. Read More

View Article and Full-Text PDF

Evaluation of the Toxic Effects of Novaluron on (Fallen) (Diptera: Muscidae).

Pak J Biol Sci 2021 Jan;24(1):42-52

Background And Objective: The worldwide fly species, Muscina stabulans (Diptera: Muscidae) is known as 'false stable fly'. It has veterinary, forensic and medical importance. The present study aimed to examine the toxicity of novaluron (chitin synthesis inhibitor) via its effect on the growth and reproductive potential of M. Read More

View Article and Full-Text PDF
January 2021

Area-Wide Elimination of Subterranean Termite Colonies Using a Novaluron Bait.

Insects 2021 Feb 24;12(3). Epub 2021 Feb 24.

Department of Entomology, 2143 TAMU, Texas A&M University, College Station, TX 77843, USA.

We investigated the use of termite baiting, a proven system of targeted colony elimination, in an overall area-wide control strategy against subterranean termites. At two field sites, we used microsatellite markers to estimate the total number of colonies, their spatial partitioning, and breeding structure. Termite pressure was recorded for two years before and after the introduction of Trelona (active ingredient novaluron) to a large area of one of the sites. Read More

View Article and Full-Text PDF
February 2021

Sublethal Impacts of Novaluron on Tarnished Plant Bug (Hemiptera: Miridae) Adults.

J Econ Entomol 2021 04;114(2):739-746

Department of Biochemistry, Molecular Biology, Entomology, and Plant Pathology, Mississippi State University, Mississippi State, MS, USA.

Tarnished plant bug, Lygus lineolaris Palisot de Beauvois (Hemiptera: Miridae), has become a primary pest of cotton in the Midsouthern United States. Insect growth regulators such as novaluron are an important part of L. lineolaris management. Read More

View Article and Full-Text PDF

Reproductive toxicity of Novaluron in Bombyx mori (Lepidoptera: Bombycidae) and its impact on egg production.

Chemosphere 2021 Jun 11;273:129592. Epub 2021 Jan 11.

Laboratory of Insects, Department of Morphology, São Paulo State University (UNESP), Institute of Biosciences, Botucatu, SP, Brazil; Electron Microscopy Center at the Institute of Biosciences of Botucatu, UNESP, SP, Brazil.

Bombyx mori was used as a model to evaluate the reproductive toxicity of Novaluron in insects. Morphological analyses of the testes and ovaries of B. mori throughout their life cycle revealed important alterations in the germ and somatic cells involved in spermatogenesis and oogenesis. Read More

View Article and Full-Text PDF

Additive interactions of some reduced-risk biocides and two entomopathogenic nematodes suggest implications for integrated control of Spodoptera litura (Lepidoptera: Noctuidae).

Sci Rep 2021 01 14;11(1):1268. Epub 2021 Jan 14.

Department of Entomology, University of Sargodha, Sargodha, 40100, Pakistan.

Higher volumes of conventional and novel chemical insecticides are applied by farmers to control resistant strains of armyworm (Spodoperta litura) in Pakistan without knowing their risks to the environment and to public health. Ten reduced-risk insecticides were tested for their compatibility with two entomopathogenic nematodes (EPNs); Heterorhabditis indica and Steinernema carpocapsae against S. litura. Read More

View Article and Full-Text PDF
January 2021

Effect of Benzoylphenyl Ureas on Survival and Reproduction of the Lace Bug, .

Insects 2021 Jan 6;12(1). Epub 2021 Jan 6.

Department of General Biology, Federal University of Viçosa, Viçosa 36570-000, Brazil.

The lace bug, is a vector of fungal complex in oil palm crops in the Americas. The effects of four benzoylphenyl ureas (BPUs) (lufenuron, novaluron, teflubenzuron, and triflumuron) were evaluated against for toxicity, survival, reproduction, and mortality in semi-field conditions. Concentration-mortality bioassays demonstrated that novaluron (LC = 0. Read More

View Article and Full-Text PDF
January 2021

Posttreatment temperature influences toxicity of insect growth regulators in Musca domestica.

Parasitol Res 2021 Feb 8;120(2):435-441. Epub 2021 Jan 8.

Institute of Agricultural Sciences, University of the Punjab, Lahore, Pakistan.

Musca domestica is one of the major cosmopolitan pests in livestock facilities because it can be both a nuisance and a vector of pathogens to animals. Currently, treatment of animal manure with insect growth regulator (IGR) insecticides is among major practices to control M. domestica throughout the year over wide-ranging environmental temperatures. Read More

View Article and Full-Text PDF
February 2021

Effectiveness of Entomopathogenic Nematodes Against Ceratitis capitata (Diptera: Tephritidae) Pupae and Nematode Compatibility with Chemical Insecticides.

J Econ Entomol 2021 02;114(1):248-256

Departamento de Ecologia de Insetos, Zoologia e Genética do Instituto de Biologia da Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brazil.

The Mediterranean fruit fly Ceratitis capitata (Wiedemann, 1824) (Diptera: Tephritidae) is among the main pests of fruit crops worldwide. Biological control using entomopathogenic nematodes (EPNs) may be an alternative to suppress populations of this pest. Thus, the aim of this study was to evaluate the pathogenicity and virulence of six EPN isolates (Heterorhabditis bacteriophora HB, H. Read More

View Article and Full-Text PDF
February 2021

Residual Efficacy of Novaluron Applied on Concrete, Metal, and Wood for the Control of Stored Product Coleopteran Pests.

Insects 2020 Dec 25;12(1). Epub 2020 Dec 25.

Department of Entomology, University of Agriculture, Faisalabad 38000, Pakistan.

The residual efficacy of novaluron on concrete, metal and wood was evaluated against last-instar larvae of (L.), (Herbst), and Everts. The larvae and food provided for survival were exposed to surfaces pretreated at rates of 0. Read More

View Article and Full-Text PDF
December 2020

Dissipation kinetics and consumer risk assessment of novaluron + lambda-cyhalothrin co-formulation in cabbage.

Ecotoxicol Environ Saf 2021 Jan 26;208:111494. Epub 2020 Oct 26.

Project Coordinating Cell, Pesticide Residue Laboratory, All India Network Project on Pesticide Residues, ICAR-Indian Agricultural Research Institute, New Delhi, India.

Cabbage, one of the most popular vegetables in the world is infested by several insect-pests and diseases. Novaluron, a chitin synthesis inhibitor and lambda-cyhalothrin, a synthetic pyrethroid group insecticide are used to manage insect-pests on cabbage. The dissipation kinetics and risk assessment of combination formulation (novaluron 9. Read More

View Article and Full-Text PDF
January 2021

Effects of novaluron ingestion and topical application on German cockroach (Blattella germanica) development and reproduction.

Pest Manag Sci 2021 Feb 5;77(2):877-885. Epub 2020 Oct 5.

Department of Entomology and Plant Pathology, and W.M. Keck Center for Behavioral Biology, North Carolina State University, Raleigh, NC, USA.

Background: Insect growth regulators disrupt insect development and reproduction. Chitin synthesis inhibitors (CSIs) allow the insect to grow normally, but because chitin is an essential component of the cuticle, formation of a new cuticle and ecdysis are prevented and the insect dies. CSIs can also kill embryos by disrupting their normal development. Read More

View Article and Full-Text PDF
February 2021

Evaluation and comparison of the effects of three insect growth regulators on honey bee queen oviposition and egg eclosion.

Authors:
Julia D Fine

Ecotoxicol Environ Saf 2020 Dec 20;205:111142. Epub 2020 Aug 20.

Invasive Species and Pollinator Health Research Unit, USDA-ARS, 3026 Bee Biology Rd., Davis, CA, 95616, USA. Electronic address:

Honey bees (Apis mellifera) are highly valued pollinators that help to ensure national food security in the United States, but reports of heavy annual losses to managed colonies have caused concerns and prompted investigations into the causes of colony losses. One factor that can negatively affect honey bee health and survival is agrochemical exposure. Investigations into the sublethal effects of agrochemicals on important metrics of colony health such as reproduction and queen fecundity has been limited by the availability of targeted methods to study honey bee queens. Read More

View Article and Full-Text PDF
December 2020

Effects of insecticides used in strawberries on stingless bees Melipona quadrifasciata and Tetragonisca fiebrigi (Hymenoptera: Apidae).

Environ Sci Pollut Res Int 2020 Dec 24;27(34):42472-42480. Epub 2020 Jul 24.

Department of Crop Protection, Federal University of Pelotas, 354, Capão do Leão, 96010-900, Rio Grande do Sul, Brazil.

The use of pesticides is considered one of the most important threats to pollinators, especially since they are widely used in agriculture for pest control. In the last years, several studies have reported severe secondary effects on various bee species, including exotic and native bees. In this study, lethal (mortality) and sublethal (locomotor activity) effects of insecticides and acaricides used in strawberries in Brazil (abamectin, novaluron, spinetoram, and thiamethoxam) were evaluated on the native stingless bees Melipona quadrifasciata and Tetragonisca fiebrigi. Read More

View Article and Full-Text PDF
December 2020

Field-evolved resistance to chitin synthesis inhibitor insecticides by soybean looper, Chrysodeixis includens (Lepidoptera: Noctuidae), in Brazil.

Chemosphere 2020 Nov 29;259:127499. Epub 2020 Jun 29.

Department of Plant Protection, Federal University of Santa Maria (UFSM), Roraima Avenue 1000, Santa Maria, Rio Grande do Sul, 97105-900, Brazil. Electronic address:

Soybean looper (SBL), Chrysodeixis includens (Walker), is an economically important soybean and cotton pest in Brazil. Here, we selected an SBL strain resistant to teflubenzuron using F screening, estimated the resistance allele frequency, characterized the inheritance of resistance, investigated fitness costs, evaluated patterns of cross-resistance, and determined the magnitude of resistance. The teflubenzuron-resistant strain (Teflu-R) was selected from field-collected populations with an estimated allele frequency of 0. Read More

View Article and Full-Text PDF
November 2020

Regional Survey of Diamondback Moth (Lepidoptera: Plutellidae) Response to Maximum Dosages of Insecticides in Georgia and Florida.

J Econ Entomol 2020 10;113(5):2458-2464

Department of Entomology, University of Georgia, Athens, GA.

We conducted maximum dose bioassays of insecticide for the control of diamondback moth (DBM), Plutella xylostella (Linnaeus), in cole crops, from 2016 to 2019 at several commercial locations in Georgia and Florida. The nominal maximum dose was defined as the highest labeled rate of an insecticide at the beginning of the survey in the equivalent of 935 liters/ha dilution. The results indicated low insecticide efficacy for high labeled rates of the following insecticides by common name (Insecticide Resistance Action Committee group number in parentheses). Read More

View Article and Full-Text PDF
October 2020

Comparison of novaluron, pyriproxyfen, spinosad and temephos as larvicides against Aedes aegypti in Chiapas, Mexico.

Salud Publica Mex 2020 Jul-Aug;62(4):424-431

Instituto de Ecología AC. Xalapa, Veracruz, México.

Objective: To compare the efficacy of three modern larvicides with the organophosphate temephos for control of Aedes aegypti in water tanks in Chiapas.

Materials And Methods: Trials were performed to compare the efficacy of pyriproxyfen, novaluron, two formulations of spinosad (granules and tablets) and temephos in oviposition traps and domestic water tanks.

Results: Pyriproxyfen and temephos provided 2-3 weeks of complete control of larvae in oviposition traps, whereas spinosad granules and novaluron provided 7-12 weeks of control. Read More

View Article and Full-Text PDF

Novaluron prevents oogenesis and oviposition by inducing ultrastructural changes in ovarian tissue of young adult Lygus lineolaris.

Pest Manag Sci 2020 Dec 13;76(12):4057-4063. Epub 2020 Jul 13.

Department of Biochemistry, Molecular Biology, Entomology and Plant Pathology, Mississippi State University, Mississippi State, MS, USA.

Background: The tarnished plant bug, Lygus lineolaris (Palisot de Beauvois), has emerged as a major pest of cotton, Gossypium hirsutum L, in the mid-southern USA. In the early 1990s L. lineolaris populations developed resistance to several classes of conventional insecticides, increasing the need for insecticides with alternative modes of action such as insect growth regulators (IGRs) for integrated pest management (IPM). Read More

View Article and Full-Text PDF
December 2020

The synergistic effect of octopamine receptor agonists on selected insect growth regulators on Say (Diptera: Culicidae) mosquitoes.

One Health 2020 Dec 7;10:100138. Epub 2020 May 7.

Center for Health and the Environment, University of California, One Shields Avenue, Davis, CA 95616, USA.

Synergistic effects of octopamine receptor agonists (OR agonists) have attracted many scientists based on their potent effects on mosquitoes. Herein, we determined the toxicity of selected insect growth regulators (IGRs) on fourth instar larvae of . We evaluated the synergistic action of OR agonists on the toxicity of IGR insecticides to achieve a better understanding of their mode of action. Read More

View Article and Full-Text PDF
December 2020

Field-based evaluation of novaluron EC10 insect growth regulator, a chitin synthesis inhibitor against dengue vector breeding in leaf axils of pineapple plantations in Gampaha District, Sri Lanka.

Parasit Vectors 2020 May 6;13(1):228. Epub 2020 May 6.

Department of Parasitology, Faculty of Medicine, University of Kelaniya, Ragama, Sri Lanka.

Background: Insect growth regulators (IGRs) are considered a novel group of insecticides to control mosquitoes. Novaluron is an IGR with benzoylphenyl urea insecticide, which inhibits chitin synthesis in insects and can reduce insect population density; it is also known to have a high margin of safety for mammals.

Methods: The effective minimum concentration of novaluron formulation EC10 was tested. Read More

View Article and Full-Text PDF

Ingestion of Novaluron Elicits Transovarial Activity in (Hemiptera: Tingidae).

Authors:
Shimat V Joseph

Insects 2020 Apr 1;11(4). Epub 2020 Apr 1.

Department of Entomology, University of Georgia, UGA Griffin Campus, 1109 Experiment Street, Griffin, GA 30223, USA.

Azaleas ( L. spp.) are widely grown ornamental plants in eastern and western regions of the USA. Read More

View Article and Full-Text PDF

Use of Novaluron-Based Autocidal Gravid Ovitraps to Control Dengue Vector Mosquitoes in the District of Gampaha, Sri Lanka.

Biomed Res Int 2020 29;2020:9567019. Epub 2020 Feb 29.

Molecular Medicine Unit, Faculty of Medicine, University of Kelaniya, Ragama, Sri Lanka.

Dengue is the most important mosquito-borne viral infection in Sri Lanka causing an enormous social and economic burden in the country. In the absence of therapeutic drugs and the developed vaccines are under investigation, vector control is the best strategy to reduce the disease transmission. Therefore, the development of novel tools to control dengue vector mosquitoes has become the need of the hour. Read More

View Article and Full-Text PDF
December 2020

Development-Disrupting Chitin Synthesis Inhibitor, Novaluron, Reprogramming the Chitin Degradation Mechanism of Red Palm Weevils.

Molecules 2019 Nov 26;24(23). Epub 2019 Nov 26.

Ministry of Environment, Water and Agriculture, Riyadh 11442, Saudi Arabia.

Disruption in chitin regulation by using chitin synthesis inhibitor (novaluron) was investigated to gain insights into the biological activity of chitinase in red palm weevils, an invasive pest of date palms in the Middle East. Impact of novaluron against ninth instar red palm weevil larvae was examined by dose-mortality response bioassays, nutritional indices, and expression patterns of genes characterized in this study. Laboratory bioassays revealed dose-dependent mortality response of ninth-instar red palm weevil larvae with LD of 14. Read More

View Article and Full-Text PDF
November 2019

Impacts of seven insecticides on Cotesia flavipes (Cameron) (Hymenoptera: Braconidae).

Ecotoxicology 2019 Dec 6;28(10):1210-1219. Epub 2019 Nov 6.

Department of Entomology and Acarology, "Luiz de Queiroz" College of Agriculture/University of São Paulo (ESALQ/USP), Piracicaba, São Paulo, 13418-900, Brazil.

The endoparasitoid wasp Cotesia flavipes (Cameron) (Hymenoptera: Braconidae) is inundatively released in Brazilian sugarcane plantations to control the sugarcane borers Diatraea saccharalis (Fabricius) and Diatraea flavipennella (Box) (Lepidoptera: Crambidae). In conjunction with these releases, several synthetic insecticides are used to control the neonate larvae of these pests. We assessed the lethal and transgenerational sublethal effects of seven of these insecticides on C. Read More

View Article and Full-Text PDF
December 2019

Novaluron impairs the silk gland and productive performance of silkworm Bombyx mori (Lepidoptera: Bombycidae) larvae.

Chemosphere 2020 Jan 5;239:124697. Epub 2019 Sep 5.

Laboratory of Insects, Department of Morphology, São Paulo State University (UNESP), Institute of Biosciences, Botucatu, Brazil; Electron Microscopy Center of the Institute of Biosciences of Botucatu, UNESP, SP, Brazil. Electronic address:

This study investigates the effects of the insect growth regulator Novaluron on the silk gland (SG) and silk cocoon production in a nontarget insect, the silkworm Bombyx mori, which is a model research insect among Lepidoptera and of great economic importance for the commercial production of silk threads. Larvae were segregated into experimental groups: the control group (CG) and the treatment group (TG), which was exposed to a Novaluron concentration of 0.15 mL/L. Read More

View Article and Full-Text PDF
January 2020

Hydrophobic nanoprecipitates formed by benzoylphenylureas and β-cyclodextrin inclusion compounds: synthesis, characterization and toxicity against larvae.

Heliyon 2019 Jul 5;5(7):e02013. Epub 2019 Jul 5.

Department of Pharmacy, Federal University of Juiz de Fora (UFJF), Campus Governador Valadares, Postal Code: 35010-177, Governador Valadares, Minas Gerais, Brazil.

The aim of this work was to synthesize and characterize the inclusion compounds formed by the complexation of β-cyclodextrin (βCD) with insecticides from the class of benzoylphenylureas (BPUs), named novaluron (NOV) and diflubenzuron (DIF), beyond evaluate their larvicidal activity against larvae. Solid state characterization by FTIR showed changes in the main peaks of BPUs and βCD, suggesting the formation of inclusion compounds in solid phase. DTA and TGA thermal analysis showed changes in temperatures of BPUs decomposition as result of molecular interactions. Read More

View Article and Full-Text PDF

Influence of Insect Growth Regulators on (Hemiptera: Tingidae) Eggs and Nymphs.

Authors:
Shimat V Joseph

Insects 2019 Jun 28;10(7). Epub 2019 Jun 28.

Department of Entomology, University of Georgia, UGA Griffin Campus, 1109 Experiment Street, Griffin GA 30223, USA.

The azalea lace bug, (Scott) (Hemiptera: Tingidae), is an important insect pest of azaleas ( L. spp.) in the USA. Read More

View Article and Full-Text PDF