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https://www.readbyqxmd.com/read/28991496/bed-bug-bites-limited-to-exposed-skin
#1
Whitney General, Christina Wlodek, Giles Dunnill
No abstract text is available yet for this article.
October 1, 2017: Journal of Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/28981678/effects-of-cyclic-feeding-and-starvation-mating-and-sperm-condition-on-egg-production-and-fertility-in-the-common-bed-bug-hemiptera-cimicidae
#2
Yvonne K Matos, Jason A Osborne, Coby Schal
Bed bugs (Cimex lectularius L.) are now endemic in most major cities, but information regarding their basic biology is still largely based on research done over four decades ago. We investigated the effects of starvation, mating, sperm storage, and female and male age on egg production and hatch. Egg production cycles varied with the number of bloodmeals that females received. Once-mated females fed every 5 d had constant egg production for ∼75 d followed by a monotonic decline to near zero. Percentage egg hatch was high and constant, but declined after ∼30 d to near zero...
July 13, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28973981/effect-of-moxidectin-on-bed-bug-feeding-development-fecundity-and-survivorship
#3
Chen Zha, Changlu Wang, Johnathan Michael Sheele
The common bed bug, Cimex lectularius L. (Hemiptera: Cimicidae), is a blood-feeding ectoparasite which experienced world-wide resurgence during recent decades. The control of bed bugs is often challenging, due to their cryptic nature and resistance to commonly used insecticides. In this study, we evaluated the effect of the antiparasitic drug moxidectin on bed bug survival, reproduction, and development. The LC50 (lethal concentration to kill half the members of a tested population) of moxidectin against bed bug male adults, female adults, and large nymphs were 52...
September 30, 2017: Insects
https://www.readbyqxmd.com/read/28959030/bed-bug-aggregation-on-dirty-laundry-a-mechanism-for-passive-dispersal
#4
William T Hentley, Ben Webster, Sophie E F Evison, Michael T Siva-Jothy
Bed bugs have shown a recent and rapid global expansion that has been suggested to be caused by cheap air travel. How a small, flightless and anachoretic insect that hides within its host's sleeping area manages to travel long distances is not yet clear. Bed bugs are attracted to the odour of sleeping humans and we suggest that soiled clothing may present a similarly attractive cue, allowing bed bugs to 'hitch-hike' around the world after aggregating in the laundry bags of travellers. We show that (1) soiled clothing is significantly more attractive than clean clothing to active bed bugs moving within a bedroom sized arena and (2) elevation of CO2 to a level that simulates human occupancy in the same arena appears to initiate search behaviour rather than direct it...
September 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28935816/forces-to-pierce-cuticle-of-tarsi-and-material-properties-determined-by-nanoindentation-the-achilles-heel-of-bed-bugs
#5
Jorge Bustamante, Jason F Panzarino, Timothy J Rupert, Catherine Loudon
The mechanical properties of bed bug (Cimex lectularius L.) tarsi and pretarsi were investigated in order to evaluate their vulnerability to piercing by plant trichomes (sharp microscopic hairs). Nanoindentation was used to measure the force required to insert a sharp probe into the cuticle of these different regions, as well as to determine creep and reduced elastic moduli for the cuticle. Scanning electron microscopy was used to visualize the indents that had been generated by nanoindentation. The force required to insert a cube corner nanoindenter probe into the cuticle was determined for a range of displacements (1 to 9 µm) and strain rates (0...
September 21, 2017: Biology Open
https://www.readbyqxmd.com/read/28933720/testing-a-threshold-based-bed-bug-management-approach-in-apartment-buildings
#6
Narinderpal Singh, Changlu Wang, Chen Zha, Richard Cooper, Mark Robson
We tested a threshold-based bed bug (Cimex lectularius L.) management approach with the goal of achieving elimination with minimal or no insecticide application. Thirty-two bed bug infested apartments were identified. These apartments were divided into four treatment groups based on apartment size and initial bed bug count, obtained through a combination of visual inspection and bed bug monitors: I- Non-chemical only in apartments with 1-12 bed bug count, II- Chemical control only in apartments with 1-12 bed bug count, III- Non-chemical and chemical control in apartments with >12 bed bug count, and IV- Chemical control only in apartments with ≥11 bed bug count...
July 26, 2017: Insects
https://www.readbyqxmd.com/read/28862646/locomotion-inhibition-of-cimex-lectularius-l-following-topical-sublethal-dose-application-of-the-chitin-synthesis-inhibitor-lufenuron
#7
Brittany Campbell, Rebecca Baldwin, Philip Koehler
To date, few studies have evaluated chitin synthesis inhibitors against bed bugs, although they would provide an alternative mode of action to circumvent insecticide resistance. Acute and sublethal effects of lufenuron were evaluated against two strains of the common bed bug. Combined acute and sublethal effects were used to calculate effective doses. The dose that was effective against 50% of Harlan strain bed bugs was 0.0081% (w/v), and was much higher against Bradenton strain bed bugs (1.11% w/v). Sublethal doses were chosen to determine the effect that leg abnormalities had on pulling force...
September 1, 2017: Insects
https://www.readbyqxmd.com/read/28776226/a-screen-of-pharmaceutical-drugs-for-their-ability-to-cause-short-term-morbidity-and-mortality-in-the-common-bed-bug-cimex-lectularius-l
#8
Johnathan M Sheele, Gale E Ridge, Wenjing Du, Nikhil Mallipeddi, Mayur Vallabhaneni
The common bed bug, Cimex lectularius L., is a hematophagous ectoparasite that preferentially feeds on humans. Pharmaceuticals present in a person's blood may adversely affect C. lectularius when it feeds. We fed >10,000 C. lectularius on blood samples containing more than 400 different drug doses and drug combinations using an in vitro feeding system to determine insect mortality. The majority of drug doses approximated the peak plasma concentration in humans taking those drugs. Twenty-one drugs were found to cause >17% 12-14-day mortality compared to 8...
August 3, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28760637/an-analysis-of-the-life-stages-of-cimex-lectularius-captured-within-a-medical-center-suggests-the-true-numbers-of-bed-bug-introductions-are-underreported
#9
Johnathan M Sheele, Erika Barrett, Debadutta Dash, Gale E Ridge
Little is known about the epidemiology of bed bugs within the health care system but in natural infestations nymphal stages predominate. We determined the life stages of bed bugs captured within a medical center and found that older bed bugs were more likely to be captured than younger insects. The numbers of 1(st) instars, 3(rd)-5(th) instars, and adult females captured was significantly different than the numbers of each life stage found in a natural infestation (p < 0.01). A significant number of early instar bed bugs introduced into the medical center may go unnoticed by hospital staff...
July 28, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28691833/-the-common-bed-bug-cimex-lectularius-biology-medical-relevance-possibilities-for-the-detection-and-control
#10
V Rupeš, J Vlčková, O Holý, D Horáková, K Azeem, H Kollárová
Bed bugs have become a major concern worldwide in the 21st century and are therefore intensively investigated. The new findings not only extend the knowledge of their biology, medical relevance, and causes of the resurgence, but also can be used in bed bug management. A brief overview is provided of some of the most important research results and opinions, published in the last few years in prestigious international journals.
2017: Epidemiologie, Mikrobiologie, Imunologie
https://www.readbyqxmd.com/read/28680688/host-association-and-selection-on-salivary-protein-genes-in-bed-bugs-and-related-blood-feeding-ectoparasites
#11
Benoit Talbot, Ondřej Balvín, Maarten J Vonhof, Hugh G Broders, Brock Fenton, Nusha Keyghobadi
Reciprocal selective pressures can drive coevolutionary changes in parasites and hosts, and result in parasites that are highly specialized to their hosts. Selection and host co-adaptation are better understood in endoparasites than in ectoparasites, whose life cycles may be more loosely linked to that of their hosts. Blood-feeding ectoparasites use salivary proteins to prevent haemostasis in the host, and maximize energy intake. Here we looked for signals of selection in salivary protein genes of ectoparasite species from a single genus (Cimex) that associate with a range of hosts including mammals (bats and humans) and birds (swallows)...
June 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28676765/molecular-basis-of-n-n-diethyl-3-methylbenzamide-deet-in-repelling-the-common-bed-bug-cimex-lectularius
#12
Feng Liu, Xiaoming Xia, Nannan Liu
As the most extensively used chemical repellent, N,N-diethyl-3-methylbenzamide (DEET) displayed repellency to a wide range of insects, including the common bed bug, Cimex lectularius. While the neuronal or molecular basis involved in DEET's repellency have been majorly focused on mosquitos and fruit flies, DEET's repellency to the common bed bug is largely unreached. To gain new insights into the cellular and molecular mechanisms in DEET's repellency to the common bed bug, we characterized the neuronal response of bed bugs to DEET, identified the olfactory receptors targeted by DEET and demonstrated the interfering effect of DEET on bed bug's responses to human odorants...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28662724/insecticide-resistance-and-resistance-mechanisms-in-bed-bugs-cimex-spp-hemiptera-cimicidae
#13
REVIEW
Kai Dang, Stephen L Doggett, G Veera Singham, Chow-Yang Lee
The worldwide resurgence of bed bugs [both Cimex lectularius L. and Cimex hemipterus (F.)] over the past two decades is believed in large part to be due to the development of insecticide resistance. The transcriptomic and genomic studies since 2010, as well as morphological, biochemical and behavioral studies, have helped insecticide resistance research on bed bugs. Multiple resistance mechanisms, including penetration resistance through thickening or remodelling of the cuticle, metabolic resistance by increased activities of detoxification enzymes (e...
June 29, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28607409/functional-characterization-of-aquaporin-like-genes-in-the-human-bed-bug-cimex-lectularius
#14
Hitoshi Tsujimoto, Joyce M Sakamoto, Jason L Rasgon
The bed bug Cimex lectularius is a blood-feeding re-emerging annoyance pest insect that has the ability to transmit Trypanosoma cruzi under experimental laboratory conditions. Aquaporins (AQPs) are water channel proteins that are essential in biological organisms. C. lectularius are constantly exposed to water-related stress, suggesting that AQPs may offer novel control avenues. We identified and cloned four AQPs from C. lectularius, assessed tissue and lifestage-specific expression, and characterized biochemical functions in vitro and in vivo...
June 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28541568/effect-of-feeding-history-and-time-elapsed-from-field-collection-on-the-movement-behavior-and-response-to-stimulation-in-cimex-lectularius-hemiptera-cimicidae
#15
Desen Wang, Changlu Wang, Narinderpal Singh, Amanda L Eiden, Richard Cooper, Chen Zha
The common bed bug (Cimex lectularius L.) (Hemiptera: Cimicidae) is an obligate blood-sucking insect that has been resurging in many countries. Researching this pest's behavior will help design more effective control methods. In this study, we evaluated the effect of feeding history and time elapsed from field collection on bed bug movement behavior and response to chemical lure or carbon dioxide stimulation in the laboratory. After CO2 was released, bed bugs unfed for 3 d began to return to harborages; in contrast, the ones unfed for 2 and 4 wk spent significantly more time outside their harborages during the first 1 h after than the 1 h before CO2 release...
August 1, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28489937/impact-of-sublethal-exposure-to-a-pyrethroid-neonicotinoid-insecticide-on-mating-fecundity-and-development-in-the-bed-bug-cimex-lectularius-l-hemiptera-cimicidae
#16
Sydney E Crawley, Jennifer R Gordon, Katelyn A Kowles, Michael F Potter, Kenneth F Haynes
Sublethal exposure to an insecticide may alter insect feeding, mating, oviposition, fecundity, development, and many other life history parameters. Such effects may have population-level consequences that are not apparent in traditional dose-mortality evaluations. Earlier, we found that a routinely used combination insecticide that includes a pyrethroid and a neonicotinoid (Temprid® SC) had deleterious effects on multiple bed bug (Cimex lectularius, L.) behaviors. Here, we demonstrate that sublethal exposure impacts physiology and reproduction as well...
2017: PloS One
https://www.readbyqxmd.com/read/28399302/genetic-diversity-and-phylogenetic-relationships-of-cytochrome-c-oxidase-subunit-i-in-cimex-hemipterus-hemiptera-cimicidae-populations-in-malaysia
#17
Siti Nor Ain Seri Masran, Abdul Hafiz Ab Majid
The tropical bed bug is scientifically recognized as a significant public health problem. While there is an increased awareness about their resurgence by medical and life science committees, efficient bed bug management still remains unresolved. The solution may soon arise, as information about bed bugs' infestation dynamics and systematics are becoming more distinguishable. Recent developments in studies about bed bugs are based on molecular intervention by determining their genetic variation and phylogeography...
July 1, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28399298/an-early-holocene-record-of-cimex-hemiptera-cimicidae-from-western-north-america
#18
Martin E Adams, Dennis L Jenkins
The subfossil remains of 14 cimicids (Hemiptera: Cimicidae) were recovered during archaeological investigations of the Paisley Five Mile Point Cave site (35LK3400), an exceptionally well-dated (n = 229 radiocarbon dates) late Pleistocene-early Holocene rock shelter site in south-central Oregon. Nine of the specimens have been assigned to three modern species of Nearctic Cimicidae-Cimex antennatus Usinger & Ueshima, Cimex latipennis Usinger & Ueshima, and Cimex pilosellus (Horváth)-whereas the remaining five individuals were too fragmentary to positively identify...
July 1, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28399295/relatively-small-quantities-of-co2-ammonium-bicarbonate-and-a-blend-of-e-2-hexenal-plus-e-2-octenal-attract-bed-bugs-hemiptera-cimicidae
#19
John F Anderson, Francis J Ferrandino, Michael P Vasil, Robert H Bedoukian, Marie Maher, Karen Mckenzie
Bed bugs, Cimex lectularius L., feed on humans, have increased exponentially in the past two decades in many major cities throughout the world, have caused intense infestations, and have become a significant health concern. Improved traps are needed to detect early infestations, to assess control programs, and for control of bed bugs. Carbon dioxide released alone or simultaneously with other attractants into three types of traps at the relatively low rate of 1 ml/min caught significantly more bed bugs than untreated controls in a 183- by 183-cm arena...
March 1, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28399289/no-detectable-insecticide-resistance-in-swallow-bugs-hemiptera-cimicidae-following-long-term-exposure-to-naled-dibrom-8
#20
Jelena Runjaic, Ian J Bellovich, Catherine E Page, Charles R Brown, Warren Booth
The swallow bug, Oeciacus vicarius Horvath, is a hematophagous ectoparasite of the cliff swallow, Petrochelidon pyrrhonota Vieillot, and is closely related to bed bugs (Cimex spp.). Evolution of insecticide resistance has been documented for bed bugs but not studied in Oeciacus. For periods of 17 and 32 yr, two cliff swallow colonies in western Nebraska were treated during the summer breeding season using the organophosphate insecticide Dibrom. Despite continual treatments, O. vicarius has been observed frequently within these colonies...
July 1, 2017: Journal of Medical Entomology
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