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https://www.readbyqxmd.com/read/29733320/harvesting-venom-toxins-from-assassin-bugs-and-other-heteropteran-insects
#1
Andrew Allan Walker, Max Rosenthal, Eivind E A Undheim, Glenn F King
Heteropteran insects such as assassin bugs (Reduviidae) and giant water bugs (Belostomatidae) descended from a common predaceous and venomous ancestor, and the majority of extant heteropterans retain this trophic strategy. Some heteropterans have transitioned to feeding on vertebrate blood (such as the kissing bugs, Triatominae; and bed bugs, Cimicidae) while others have reverted to feeding on plants (most Pentatomomorpha). However, with the exception of saliva used by kissing bugs to facilitate blood-feeding, little is known about heteropteran venoms compared to the venoms of spiders, scorpions and snakes...
April 21, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29656551/efficacy-of-three-different-steamers-for-control-of-bed-bugs-cimex-lectularius-l
#2
Desen Wang, Changlu Wang, Guohong Wang, Chen Zha, Amanda L Eiden, Richard Cooper
BACKGROUND: Bed bugs, Cimex lectularius L., have become one of the most difficult urban pests to control. Steam treatment is reported to be an effective method to kill bed bugs and is considered to be an important component of bed bug integrated pest management (IPM). We evaluated and compared the efficacy of two affordable consumer-grade commercial steamers to a commonly used professional-grade steamer for killing bed bugs. RESULTS: In laboratory experiments, the consumer-grade steamer at an affordable price achieved the same high control efficacy as the professional-grade steamer for treating bed bugs exposed on mattresses (100% bed bug mortality), located beneath a fabric cover (>89% bed bug mortality), or hiding in cracks (100% bed bug mortality)...
April 15, 2018: Pest Management Science
https://www.readbyqxmd.com/read/29568252/insect-pathogenic-fungi-and-bed-bugs-behaviour-horizontal-transfer-and-the-potential-contribution-to-ipm-solutions
#3
Anders Aak, Morten Hage, Bjørn Arne Rukke
The increasing problem of bed bugs requires the development of new control strategies, and insect pathogenic fungi can contribute towards management. We used laboratory bioassays with Isaria fumosoroseus , Lecanicillium muscarium and Beauveria bassiana to evaluate their virulence to the bed bug. Only B. bassiana significantly affected bed bug survival and was dependent on dose and formulation. A 2% B. bassiana oil formulation induced horizontal transfer to elevate mortality in a 10-day arena bioassay. Temporal distribution of contagious individuals and increasing the dose from 2 to 4% did not increase mortality...
2018: Journal of Pest Science
https://www.readbyqxmd.com/read/29562293/distribution-and-frequency-of-pyrethroid-resistance-associated-mutations-in-host-lineages-of-the-bed-bug-hemiptera-cimicidae-across-europe
#4
Ondrej Balvín, Warren Booth
For over two decades, the bed bug, Cimex lectularius L. (Hemiptera: Cimicidae) has been undergoing a dramatic global resurgence, likely in part to the evolution of mechanisms conferring resistance to insecticides. One such mechanism is knock-down resistance (kdr), resulting from nonsynonymous mutations within the voltage-gated sodium channel (VGSC) gene. To date, three mutations have been identified in C. lectularius, V419L, L925I, and I936F. Using Sanger sequencing, the frequency and distribution of these VGSC mutations across 131 populations collected from the bat-associated and human-associated lineages of C...
March 15, 2018: Journal of Medical Entomology
https://www.readbyqxmd.com/read/29538429/temperature-stress-deteriorates-bed-bug-cimex-lectularius-populations-through-decreased-survival-fecundity-and-offspring-success
#5
Bjørn Arne Rukke, Ranjeni Sivasubramaniam, Tone Birkemoe, Anders Aak
Sublethal heat stress may weaken bed bug infestations to potentially ease control. In the present study, experimental populations exposed to 34, 36 or 38°C for 2 or 3 weeks suffered significant mortality during exposure. Among survivors, egg production, egg hatching, moulting success and offspring proliferation decreased significantly in the subsequent 7 week recovery period at 22°C. The overall population success was negatively impacted by increasing temperature and duration of the stress. Such heat stress is inadequate as a single tool for eradication, but may be included as a low cost part of an integrated pest management protocol...
2018: PloS One
https://www.readbyqxmd.com/read/29444240/isolation-and-characterization-of-novel-polymorphic-microsatellite-markers-for-cimex-hemipterus-f-hemiptera-cimicidae
#6
Siti Nor Ain Seri Masran, Abdul Hafiz Ab Majid
Due to the growing public health and tourism awareness, Cimex hemipterus Fabricius (Hemiptera: Cimicidae) has gained a great interest in increasing reported infestation cases in tropical regions of the world, including Malaysia. Since the information on the molecular ecology and population biology of this species are tremendously lacking, the isolation and development of molecular markers can be used to determine its genetic structure. In this study, novel microsatellite primers isolated from enriched genomic libraries of C...
February 10, 2018: Journal of Medical Entomology
https://www.readbyqxmd.com/read/29438553/rnai-mediated-knockdown-of-vatpase-subunits-affects-survival-and-reproduction-of-bed-bugs-hemiptera-cimicidae
#7
Sanjay Basnet, Shripat T Kamble
The common bed bug, Cimex lectularius L. (Hemiptera: Cimicidae) has resurged as one of the most troublesome household pests affecting people across the globe. Bed bug infestations have increased in recent years primarily due to the evolution of insecticide resistance and the insect's ability to hitchhike with travelers. vATPases are one of the most evolutionarily conserved holoenzymes in eukaryotes, which are mainly involved in proton transport across the plasma membranes and intracellular organelles. RNA interference (RNAi) has been developed as a promising tool for insect control...
February 9, 2018: Journal of Medical Entomology
https://www.readbyqxmd.com/read/29432483/histamine-as-an-emergent-indoor-contaminant-accumulation-and-persistence-in-bed-bug-infested-homes
#8
Zachary C DeVries, Richard G Santangelo, Alexis M Barbarin, Coby Schal
Histamine is used in bronchial and dermal provocation, but it is rarely considered an environmental risk factor in allergic disease. Because bed bugs defecate large amounts of histamine as a component of their aggregation pheromone, we sought to determine if histamine accumulates in household dust in bed bug infested homes, and the effects of bed bug eradication with spatial heat on histamine levels in dust. We collected dust in homes and analyzed for histamine before, and up to three months after bed bug eradication...
2018: PloS One
https://www.readbyqxmd.com/read/29415167/repellency-of-naturally-occurring-or-related-compounds-deet-and-para-menthane-3-8-diol-to-bed-bugs-hemiptera-cimicidae
#9
John F Anderson, Francis J Ferrandino, Michael P Vasil, Robert H Bedoukian, Marie Maher, Karen McKenzie
Bed bugs, Cimex lectularius L. (Hemiptera: Cimicidae), have become a major health nuisance in the past 20 ysin cities and elsewhere throughout many areas of the world. Few studies have reported on repellent compounds that could reduce their transport in luggage. We evaluated the repellency of six naturally occurring or related compounds used in flavor/fragrance applications or structurally related compounds, para-menthane-3,8-diol, and N,N-diethyl-meta-toluamide (DEET) to bed bugs in a 183 × 183-cm arena ...
February 5, 2018: Journal of Medical Entomology
https://www.readbyqxmd.com/read/29381783/survival-and-transstadial-persistence-of-trypanosoma-cruzi-in-the-bed-bug-hemiptera-cimicidae
#10
Brittny N Blakely, Stephen F Hanson, Alvaro Romero
Bed bug populations are increasing around the world at an alarming rate and have become a major public health concern. The appearance of bed bug populations in areas where Chagas disease is endemic raises questions about the role of these insects in the transmission of Trypanosoma cruzi, the etiological agent of the disease. In a series of laboratory evaluations, bed bug adults and nymphs were experimentally fed with T. cruzi-infected blood to assess the ability of T. cruzi to survive inside the bed bug and throughout the insect's molting process...
January 26, 2018: Journal of Medical Entomology
https://www.readbyqxmd.com/read/29363461/-trypanosoma-cruzi-infection-does-not-decrease-survival-or-reproduction-of-the-common-bed-bug-cimex-lectularius
#11
Jennifer K Peterson, Renzo Salazar, Ricardo Castillo-Neyra, Katty Borrini-Mayori, Carlos Condori, Casey Bartow-McKenney, Dylan Tracy, César Náquira, Michael Z Levy
Although not presently implicated as a vector of human pathogens, the common bed bug, Cimex lectularius , has been suspected of carrying human pathogens because of its close association with humans and its obligate hematophagy. Recently, we characterized the vectorial competence of C. lectularius for the parasite Trypanosoma cruzi , the causative agent of Chagas disease. We observed that C. lectularius can acquire T. cruzi infection when fed on T. cruzi -carrying mice, and subsequently transmit T. cruzi to uninfected mice...
March 2018: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29361010/pest-prevalence-and-evaluation-of-community-wide-integrated-pest-management-for-reducing-cockroach-infestations-and-indoor-insecticide-residues
#12
Chen Zha, Changlu Wang, Brian Buckley, Ill Yang, Desen Wang, Amanda L Eiden, Richard Cooper
Pest infestations in residential buildings are common, but community-wide pest survey data are lacking. Frequent insecticide applications for controlling indoor pests leave insecticide residues and pose potential health risks to residents. In this study, a community-wide pest survey was carried out in a housing complex consisting of 258 units in 40 buildings in New Brunswick, New Jersey. It was immediately followed by implementation of an integrated pest management (IPM) program in all the cockroach-infested apartments and two bed bug apartments with the goal of eliminating pest infestations, reducing pyrethroid residues, and increasing resident satisfaction with pest control services...
April 2, 2018: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29244819/climbing-ability-of-teneral-and-sclerotized-adult-bed-bugs-and-assessment-of-adhesive-properties-of-the-exoskeletal-fluid-using-atomic-force-microscopy
#13
Kevin R Hinson, Vladimir Reukov, Eric P Benson, Patricia A Zungoli, William C Bridges, Brittany R Ellis, Jinbo Song
We observed that teneral adults (<1 h post-molt) of Cimex lectularius L. appeared more adept at climbing a smooth surface compared to sclerotized adults. Differences in climbing ability on a smooth surface based on sclerotization status were quantified by measuring the height to which bed bugs climbed when confined within a glass vial. The average maximum height climbed by teneral (T) bed bugs (n = 30, height climbed = 4.69 cm) differed significantly (P< 0.01) from recently sclerotized (RS) bed bugs (n = 30, height climbed = 1...
2017: PloS One
https://www.readbyqxmd.com/read/29243884/dynamics-of-bed-bug-infestations-in-three-low-income-housing-communities-with-various-bed-bug-management-programs
#14
Changlu Wang, Amanda Eiden, Narinderpal Singh, Chen Zha, Desen Wang, Richard Cooper
BACKGROUND: Infestations of the common bed bug, Cimex lectularius L., have become common in low-income communities in the USA over the last 15 years. We evaluated community-based integrated pest management (IPM) programs for reducing bed bug infestations. Two housing authorities (Bayonne and Hackensack) implemented bed bug IPM programs. A third housing authority (Paterson) was used as the control site. Building-wide surveys were conducted in all communities, three times, to evaluate the effectiveness of the IPM programs...
December 15, 2017: Pest Management Science
https://www.readbyqxmd.com/read/29220500/toxicities-of-selected-essential-oils-silicone-oils-and-paraffin-oil-against-the-common-bed-bug-hemiptera-cimicidae
#15
Chen Zha, Changlu Wang, Andrew Li
The common bed bug [Cimex lectularius L. (Hemiptera: Cimicidae)] and tropical bed bug [Cimex hemipterus F. (Hemiptera: Cimicidae)] resurged in the United States and many other countries over the past decades. The need for safe and effective bed bug control products propelled the development of numerous 'green insecticides', mostly with essential oils listed as active ingredients. Various inorganic and organic oils also were used for bed bug management. However, there are no published studies on their toxicities against bed bugs...
February 9, 2018: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29198783/common-child-and-adolescent-cutaneous-infestations-and-fungal-infections
#16
Sherman J Alter, Megan B McDonald, Julie Schloemer, Ryan Simon, Julian Trevino
Cutaneous infections and infestations are common among children and adolescents. Ectoparasitic infestations affect individuals across the globe. Head lice, body lice, scabies, and infestations with bed bugs are seen in individuals who reside in both resource poor areas and in developed countries. Superficial cutaneous and mucosal candida infections occur throughout the life cycle. Dermatophyte infections of keratin-containing skin and skin structures result in tinea capitis (scalp), tinea corporis (body), tinea pedis (foot), and tinea unguium (nails)...
January 2018: Current Problems in Pediatric and Adolescent Health Care
https://www.readbyqxmd.com/read/29173380/clinical-issues-december-2017
#17
Mary J Ogg
Bed bugs Key words: bed bugs, pest management, infestation, transmission. Warming irrigation fluids Key words: irrigation fluid, warming fluid, hypothermia, warming cabinet. Fasting before surgery Key words: fasting, NPO, liquids, solids. Advanced cardiac life support requirements for perioperative nurses Key words: advanced cardiac life support, ACLS certification, pediatric advanced life support, PALS certification, basic life support.
December 2017: AORN Journal
https://www.readbyqxmd.com/read/29165969/all-things-bed-bugs-a-primer-for-nephrology-nurses
#18
Mary S Haras
Bed bug infestation is on the rise, affecting individuals across all demographics and geographics worldwide. Of concern is nursing's lack of knowledge about bed bug transmission, prevention, elimination, and the management of bed bug bites. This article explores the evidence about the lifecycle of the bed bug, its typical presentation, and ways to prevent and eliminate bed bug infestation. Ways that the nephrology nurse can assist in eradication and policy development are discussed, and resources are provided for further information...
March 2017: Nephrology Nursing Journal: Journal of the American Nephrology Nurses' Association
https://www.readbyqxmd.com/read/29148801/neuropeptidomics-of-the-bed-bug-cimex-lectularius
#19
Reinhard Predel, Susanne Neupert, Christian Derst, Klaus Reinhardt, Christian Wegener
The bed bug Cimex lectularius is a globally distributed human ectoparasite with fascinating biology. It has recently acquired resistance against a broad range of insecticides, causing a worldwide increase in bed bug infestations. The recent annotation of the bed bug genome revealed a full complement of neuropeptide and neuropeptide receptor genes in this species. With regard to the biology of C. lectularius, neuropeptide signaling is especially interesting because it regulates feeding, diuresis, digestion, as well as reproduction and also provides potential new targets for chemical control...
January 5, 2018: Journal of Proteome Research
https://www.readbyqxmd.com/read/29144076/the-let-s-beat-the-bug-campaign-a-statewide-active-public-education-against-bed-bugs-in-minnesota
#20
Amelia K Shindelar
Bed bugs continue to affect society and place a burden on public health systems. Experiences of the Let’s Beat the Bug! campaign are presented to help information networks prepare personnel to effectively address questions about this pest. Following recommendations from the Minnesota state bed bug working group, an information line was established and the Web site (www.bedbugs.umn.edu) was revised. Data from both services were analyzed by geographic region and type of information requested. InformationLine primarily assisted people who had issues dealing with failed treatments and landlord reluctance to take effective measures against this pest...
March 2017: Journal of Environmental Health
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