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The DDT, deltamethrin, and malathion susceptibilities of five tropical bed bug (Cimex hemipterus) strains, and their resistance mechanisms were investigated using synergism studies and detection of kdr mutations. All C. hemipterus strains showed high resistance to DDT and deltamethrin and moderate t...

Several mutations in voltage gated sodium channel (NAv) have been identified in Aedes aegypti populations worldwide. The variations in the V1016I and F1534C are the most related to knockdown resistance to pyrethroids. A study was carried out to determine the frequency of V1016I and F1534C NAv by rea...

Combinations of bait and spray were tested against susceptible and field-collected German cockroaches, Blattella germanica. In exposure tests, residual deposits of all sprays were lethal to a susceptible strain, but pyrethrin and certain pyrethroid sprays were repellent in choice boxes. Indoxacarb b...

Cimex hemipterus is spreading to areas where only C. lectularius have been historically observed, such as the Middle East, North Australia, but also temperate regions like Russia. In Europe, until now mostly episodic observations of the species were known. We collected material from around 600 bed b...

Transfluthrin is a volatile pyrethroid based on polyfluorinated benzyl alcohol that is commonly present in household insecticides like coils, electric vaporizers or aerosols used mainly against mosquitoes. Deployed into the air Transfluthrin exerts short-term effects. Due to its molecular structure,...

The development of resistance against insecticides, which are primarily used for bed bug (Cimex lectularius) control, is considered to one of the main reasons for the worldwide expansion of this pest. This study provides evidence of the occurrence of resistance and the mechanisms associated with a d...

Currently pest control industries are having difficulties in controlling bed bugs, specifically in workers’ dormitories and residential houses. Survey of bed bug infestations across Peninsular Malaysia by collecting samples from residential houses, dormitories, hotels and motels and flats and apartm...

One of the global problems of today is the insecticide resistance of the human louse Pediculus humanus L. to pyrethroids. The continuous application of pyrethroids (mostly, permethrin) resulted in the formation of local lice populations resistant to this group of insecticides. In the 2013-2015 body ...

To investigate insecticide resistance in modern field populations of bed bugs in Australia, a program to collect and screen field specimens was initiated. Thirty-five bed bug strains (a mixture that included both C. lectularius and C. hemipterus) were collected from across Australian and subsequentl...

From 2014 to 2016, in Moscow, Kaluga region, and Ural (Ekaterinburg) we have been monitored the susceptibility of male German cockroaches to topically applying 1μl insecticides of different structure. It was found that all cockroach populations are most resistant to pyrethroid insecticides, especial...

Insecticide candle is the optimum human lifesaving innovation that kills flying vectors, particularly mosquitoes - the most lethal of all insects in the world. Over one million people worldwide die from mosquito-borne diseases every year. The candle is a special vegetable wax-encased formulated cand...

Malaria is a global health challenge. Vector control remains the fundamental, central and critical component of prevention and control of malaria. Insecticides remain the mainstay in vector control for malaria prevention. Pyrethroids are currently the insecticides for adult vector control interventi...

Pyrethroid-resistance in bed bugs, Cimex lectularius, has been described in many countries, but up to now, for Germany no data are available. However, pest control companies increasingly report difficulties in controlling bed bugs with pyrethroids. In the present study four bed bug strains were coll...

The majority of body lice colonies examined in Moscow were permethrin resistant and susceptible to organophosphorus (fenthion, malathion) and neonicotinoid insecticides. Metabolic resistance of body lice to permethrin was investigated using synergists piperonyl butoxide (PBO), S,S,S-tributylphosphor...

In this study, we examined the resistance status of six field-collected strains from Singapore to eight insecticides, as well as the resistance of the parental through F5 generations after they were selected with indoxacarb bait. All strains showed no resistance to acetamiprid (0.7–1.9x), imidaclopr...

Worldwide, there are many reports of pyrethroid resistance in bed bugs (Cimex spp.). Previous studies on the Common bed bug, Cimex lectularius L., have identified two mutations (V419L and L925I) in the voltage-gated sodium channel (VGSC) gene responsible for knockdown resistance (kdr). However, noth...

Insecticide resistance in bed bugs (Cimex lectularius L. and C. hemipterus F.) is a major factor in the pest’s resurgence. Various studies have demonstrated resistance to the pyrethroids, carbamates and the organophosphates. Resistance has been suspected in Australia, with anecdotal reports of poor ...

Control of the Anopheline vectors is the most effective approach to malaria control. Reductions in mortality and morbidity from malaria have been achieved through the use of pyrethroid treated bed nets, pyrethroid resistant mosquitoes threaten the effectiveness of this valuable intervention. Insecti...

Malaria vectors have acquired widespread resistance to different classes of insecticides including two synthetic pyrethroids owing to the continuous use in public health and sometimes in other sectors. Hence, there is need to develop alternative strategies including use of new insecticides with nove...

Thermal control is one of the possible control methods for bedbug infestations. It is however often assessed controversially. This assessment is not always based on objective arguments and rarely on own, practical experiences. On the basis of practical trials and experiences from over 450 heat treat...

The biological characterization of resistance in laboratory is reported, along with an evaluation of the response of vector populations to methods of chemical control which are used on the routine executed in the Dengue Control .Data from the Monitoring Program demonstrated over time an increasing n...

Homelessness is an increasing public health problem. Because of poor living conditions and limited access to healthcare systems, homeless persons are exposed to many communicable infections. The pattern of life and the crowded shelters provide ideal conditions for the spread of lice. Body lice have ...

The bed bug Cimex lectularius L. is blood-feeding parasite of humans, bats and different domestic animals. In the early 1990s, pest management professionals began to see an increase in beg bug infestations across the world. Now the bed bug problem is very important in many countries, however, in Rus...

Currently, there is evidence of Triatoma infestans Klug, 1834 populations from southern Bolivia and northern Argentina with high levels of resistance to pyrethroids. In this study we characterized the susceptibility levels of 37 Triatominae populations to deltamethrin. The bioassays were performed b...

The levels of susceptibility to a pyrethroid (deltamethrin) and an organophosphate (malathion) and metabolic enzyme activities of adult Periplaneta americana females from populations collected in three cities of south western Colombia (Cali, Popayan, and Buenaventura), were characterized by bottle b...

The near absence of bed bugs from human dwellings for fifty or more years has left us with limited knowledge of its biology and few answers to eliminate populations. Research findings with relevance to global bed bug management are presented. Monitoring of spontaneous activity of bed bugs demonstrat...

New bed bug control products, methods and Codes of Practices have been introduced, but it is likely that until we have a novel insecticide molecule and their formulations to which the bed bugs are fully susceptible, we cannot achieve appropriate results. Following a series of individual laboratory t...

Natural pyrethrum and its synthetic analogues are among the most widely used insecticides in medical, veterinary and agricultural use. Low application rates, rapid knock-down and kill, range of duration of activity and good mammalian safety profile make them an active of choice in most domestic appl...

The house fly, Musca domestica L., is one of the most common synanthropic insects in the world. It is known as mechanical carrier of various organisms that cause diseases of man. In many countries, house fly populations can quickly develop resistance to insecticides using to control them. At present...

Based on historical data on the number of inquiries to the advisory service at the Danish Pest Infestation Laboratory we have tried to analyse the variation in bed bug infestations in Denmark since the 1950s. The bed bug problems in Denmark have gone from low levels in the 1950s, gradually increasin...

Widespread resistance to conventional residual neurotoxic insecticides such as pyrethroids is likely to be a major factor in bed bug infestations. To identify an insecticide with an alternative mode of action that is effective against the bed bug, the juvenile hormone analogue (S)-methoprene, was ev...

Pyrethroid, carbamate, and organophosphate insecticides are frequently used for bed bug control. A baseline susceptibility study for commonly used insecticides was carried out with a susceptible C. lectularius laboratory strain. LD50-values against a susceptible strain in a contact bioassay format a...

The bed bug, Cimex lectularius L., has made a rapid and unexpected comeback in the United States. In an online survey of 509 U.S. pest control firms, 91% encountered bed bugs in the past two years, whereas only 37% recalled seeing them five years ago. Perpetual movement of people, zero tolerance for...

The current study, in three methods, topical application, surface contact (WHO glass jar) method and toxic baits, was designed to investigate the relationship between permethrin German cockroach (Blattella germanica (L.)) resistant strains and fipronil. Twelve German cockroach strains used in this s...

This descriptive survey studied comparison of malaria cases, epidemiological and entomological serves, insecticides used and mean temperature, relative humidity and amounts of rain fall in a ten year period (1994-2003).The most important species of anopheline vectors include: Anopheles stephensi, An...

In fly control, the development of new insecticidal compounds with oral action encourages the development of baits. Imidacloprid, which belongs to the chloronicotinyl class of compounds, is most active when it is ingested and it is used in fly control as a granule for application as scatter bait (Qu...

The resistance of the house fly to insecticides is a limiting factor for its control even in Slovakia, where more than 70% of flies are highly resistant to synthetic pyrethroids (permethrin, cypermethrin, deltamethrin, and lambdacyhalothrin), 66% of fly populations are highly resistant to bendiocarb...

The German cockroach, Blattella germanica (L.), is the most important cockroach pest in Russia. After WW II, the use of inorganic compounds — such as boric acid, sodium fluoride, and arsenic — for cockroach control decreased, and the use of organic insecticides — such as organochlorines, organophosp...

The high level of resistance to organophosphate and pyrethroid insecticides by German cockroaches is due to multiple factors, including the scheduled use of them, and isolated populations. Resistance in field populations have been observed in some Mexican strains, in which control failure with cyper...

Resistance to pyrethroid insecticides has become common in field populations of the German cockroach, Blattella germanica (L.), in the United States and elsewhere. Some populations are highly resistant to as many as eight or nine pyrethroids. The primary mechanisms of resistance are enzymatic degrad...

Twenty three strains of field populations of the German cockroach, Blattella germanica (L.) collected from hotels and restaurants from various localities in peninsular Malaysia were tested for their susceptibility to commonly used insecticides (propoxur, bendiocarb, chlorpyrifos, fenitrothion, pirim...

In 1996-97 response reactions of urban populations of houseflies (Musca domestica L.) collected in Moscow and Moscow were studied against long-term influence of industrial pollutants and insecticide press. Reaction on the industrial influence evaluated for fecundity and on the insecticide press for ...

Following the failure of some applications against German cockroaches (Blattella germanica) in France, questions have been raised as to the role, and level, that insecticide resistance may have played in these failures. To answer the question , samples of cockroaches were collected from two sites in...

During the early 1990s the Medical Entomology Centre, Cambridge, received an increasing number of reports from concerned health professionals of treatments against head lice failing to cure. Preliminary investigations showed some lice to have developed tolerance of pyrethroid insecticides. A series ...

House flies belong probably among insects which are most frequently used in experimental studies of physiological, genetic and biochemical mechanisms of resistance. The development of resistance is an example of microevolution caused by artificially induced change in the frequency of some selection ...

Populations from Pskov region showed high resistance to trichlorphon and tolerance to pyrethroids. Moscow populations were high resistant to trichlorphon and to pyrethroids with different chemical structure (permethrin, cypermethrin and others) and tolerant to DDVP. Populations, that were high resis...

Enzyme activity was determined spectrophotometrically used 3-5 days old imagoes M. domestica. Total esterases - by van Asperen method (substrate 1-naphthyl acetate), cholinesterase activity – by Ellmann method (subsrate acetylthiocholine iodide). Total acid phosphatase activity using 4-nitrophenylph...

The regular and effective control of some synanthropic crawling insects as cockroaches and ants is unavoidable but due to the requirements of human health and environment protection, their elimination needs new concepts and methods. Cockroaches, first of all the German cockroach Blattella germanica ...

Infestation with head lice, Pediculosis capitis, is a widespread, persistent and recurring problem amongst pre-school and school aged children. The problem poses no direct threat to health which may explain why such a physiologically distressing condition affecting millions of young children every y...

A large scale resistance management programme is currently being undertaken in Chiapas, Southern Mexico. this paper reports the baseline levels of resistance as detected by bioassays and biochemical assays in the mosquito Anopheles albimanus in the study area. A high level of resistance to DDT and l...

The housefly Musca domestica L. belongs to the most important hygiene pests world-wide - especially in livestock. Due to its fast development and high reproductive rate the housefly has developed severe resistance against commonly used insecticides. Sometimes resistance problems against new active i...

Field and laboratory studies were initiated in 1993 to investigate the effect(s) of specific insecticide use strategies on resistant populations of German cockroach, Blattella germanica. Infestation levels were monitored using sticky traps, and these data formed the basis for the estimates of treatm...

A formulation consisting of the pyrethroid insecticide alphacypermethrin and flufenoxuron, an acylurea insect growth regulator, has been shown to give effective and persistent control of cockroach infestations after a single treatment. Flufenoxuron is a new high performance residual insecticide for ...

Multi-resistant strains of Blattella germanica are now common, and strategies for their continued control using conventional insecticides need to be devised rationally if long-term suppression of these nuisance insects is to be achieved. Newer insecticides such as growth regulators may have a role i...

German cockroach (Blattella germanica) control treatment history has rarely been accompanied by resistance monitoring in the field. Consequently, while cockroach 'resistance', receives much publicity, it is a fact that, to date, only a handful of complaints that are due to pyrethroid resistance, hav...

Resistance to organochlorine, organophosphorous (OP) and carbamate insecticides in the German cockroach Blattella germanica has been documented for many years. In the past, significant bendiocarb resistance has been reported in the United Kingdom. More recently, resistance has been reported to the p...

Laboratory from 1987 to 1991. A screening of the insecticide resistance in B. germanica in some selected locations was conducted with permethrin using tarsal contact tests to estimate KT50, (/WHO/VBC/75.593). Based on these data more detailed measurement of the resistance in the German Cockroaches f...

Cockroach control in the Netherlands is carried out with the use of the synthetic pyrethroids deltamethrin, cyfiuthrin or permethrin or of the organophosphate chlorpyrifos. The German cockroach is the species most frequently found in buildings. There are some indications that resistance against inse...