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Entomology, Insects

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https://www.readbyqxmd.com/read/28148283/spatial-and-temporal-distribution-of-house-infestation-by-triatoma-infestans-in-the-toro-toro-municipality-potosi-bolivia
#1
Jorge Espinoza Echeverria, Antonio Nogales Rodriguez, Mirko Rojas Cortez, Liléia Gonçalves Diotaiuti, David E Gorla
BACKGROUND: Triatoma infestans is the main vector of Trypanosoma cruzi in Bolivia. The species is present both in domestic and peridomestic structures of rural areas, and in wild ecotopes of the Andean valleys and the Great Chaco. The identification of areas persistently showing low and high house infestation by the vector is important for the management of vector control programs. This study aimed at analyzing the temporal and spatial distribution of house infestation by T. infestans in the Toro Toro municipality (Potosi, Bolivia) between 2009 and 2014, and its association with environmental variables...
February 2, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28141965/evolution-of-stored-product-entomology-protecting-the-world-food-supply
#2
David W Hagstrum, Thomas W Phillips
Traditional methods of stored-product pest control were initially passed from generation to generation. Ancient literature and archaeology reveal hermetic sealing, burning sulfur, desiccant dusts, and toxic botanicals as early control methods. Whereas traditional nonchemical methods were subsequently replaced by synthetic chemicals, other traditional methods were improved and integrated with key modern pesticides. Modern stored-product integrated pest management (IPM) makes decisions using knowledge of population dynamics and threshold insect densities...
January 31, 2017: Annual Review of Entomology
https://www.readbyqxmd.com/read/28126033/cultural-significance-of-termites-in-sub-saharan-africa
#3
Arnold van Huis
BACKGROUND: The number of termite species in the world is more than 2500, and Africa with more than 1000 species has the richest intercontinental diversity. The family Termitidae contains builders of great mounds up to 5 m high. Colonies are composed of casts: a queen, a king, soldiers and workers. Some species of termite cultivate specialised fungi to digest cellulose. Termites constitute 10% of all animal biomass in the tropics. The purpose of the study was to make an overview of how termites are utilized, perceived and experienced in daily life across sub-Saharan Africa...
January 26, 2017: Journal of Ethnobiology and Ethnomedicine
https://www.readbyqxmd.com/read/28103294/community-based-entomological-surveillance-reveals-urban-foci-of-chagas-disease-vectors-in-sobral-state-of-cear%C3%A3-northeastern-brazil
#4
Cynara Carvalho Parente, Fernando S M Bezerra, Plutarco I Parente, Raimundo V Dias-Neto, Samanta C C Xavier, Alberto N Ramos, Filipe A Carvalho-Costa, Marli M Lima
BACKGROUND: The aim of this work was to explore the potential risk of vector-borne Chagas disease in urban districts in northeastern Brazil, by analyzing the spatiotemporal distributions and natural infection rates with Trypanosoma cruzi of triatomine species captured in recent years. The main motivation of this work was an acute human case of Chagas disease reported in 2008 in the municipality of Sobral. METHODOLOGY/PRINCIPAL FINDINGS: We analyzed data from community-based entomological surveillance carried out from 2010 to 2014...
2017: PloS One
https://www.readbyqxmd.com/read/28068574/insect-succession-on-remains-of-human-and-animals-in-shenzhen-china
#5
Yu Wang, Meng-Yun Ma, Xin-Yu Jiang, Jiang-Feng Wang, Liang-Liang Li, Xiao-Jun Yin, Min Wang, Yue Lai, Lu-Yang Tao
Most forensic entomological succession studies have been carried out using pig or rabbit carcasses; however, there have been few studies on the differences between insect succession patterns on human cadavers and on animal carcasses. In order to clarify the differences between decomposition and insect succession patterns of human cadavers and animal carcasses, one 49.5kg human cadaver, two large pig carcasses (45 and 48kg), two small pig carcasses (23 and 25kg) and two rabbit carcasses (both 1.75kg) were placed in the same field conditions in Shenzhen, China for a comparative study on August, 2013...
December 28, 2016: Forensic Science International
https://www.readbyqxmd.com/read/28067782/rna-interference-for-mosquito-and-mosquito-borne-disease-control
#6
REVIEW
Paul M Airs, Lyric C Bartholomay
RNA interference (RNAi) is a powerful tool to silence endogenous mosquito and mosquito-borne pathogen genes in vivo. As the number of studies utilizing RNAi in basic research grows, so too does the arsenal of physiological targets that can be developed into products that interrupt mosquito life cycles and behaviors and, thereby, relieve the burden of mosquitoes on human health and well-being. As this technology becomes more viable for use in beneficial and pest insect management in agricultural settings, it is exciting to consider its role in public health entomology...
January 5, 2017: Insects
https://www.readbyqxmd.com/read/28032105/evaluation-of-some-plant-essential-oils-against-the-brown-banded-cockroach-supella-longipalpa-blattaria-ectobiidae-a-mechanical-vector-of-human-pathogens
#7
Mona Sharififard, Farhad Safdari, Amir Siahpoush, Hamid Kassiri
BACKGROUND: Essential oils, as secondary plant compounds, present a safer alternative to conventional insecticides in insect control programs. So five essential oils including eucalyptus, mint, yarrow, oregano and rosemary oils were evaluated against the brown-banded cockroach Supella longipalpa. METHODS: Evaluation was done against the 3(rd) and 4(th) instar nymphs using three bioassay methods; continuous contact toxicity, fumigant toxicity and repellent activity...
December 2016: Journal of Arthropod-borne Diseases
https://www.readbyqxmd.com/read/28011736/toxicological-enzymatic-and-molecular-assessment-of-the-insecticide-susceptibility-profile-of-triatoma-infestans-hemiptera-reduviidae-triatominae-populations-from-rural-communities-of-santa-cruz-bolivia
#8
Pablo L Santo-Orihuela, Claudia V Vassena, Guillermo Carvajal, Eva Clark, Silvio Menacho, Ricardo Bozo, Robert H Gilman, Caryn Bern, Paula L Marcet
A wide range of insecticide resistance profiles has been reported across Bolivian domestic and sylvatic populations of Triatoma infestans (Klug, 1834) (Hemiptera, Reduviidae), including some with levels proven to be a threat for vector control. In this work, the insecticide profile of domestic T. infestans was studied with standardized toxicological bioassays, in an area that has not undergone consistent vector control. F1 first-instar nymphs hatched in laboratory from bugs captured in three communities from the Santa Cruz Department were evaluated with different insecticides...
December 22, 2016: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28011735/occurrence-of-amblyomma-americanum-acari-ixodidae-and-human-infection-with-ehrlichia-chaffeensis-in-wisconsin-2008-2015
#9
Megan Christenson, Xia Lee, Scott Larson, Diep Hoang Johnson, Julia Jensen, Megan Meller, Susan Paskewitz
Because of the increasing incidence of human ehrlichiosis in Wisconsin, we assessed reports of human infections by Ehrlichia chaffeensis and the distribution of its vector, the lone star tick (Amblyomma americanum (L.)). From 2008 through 2015, 158 probable and confirmed human cases of E. chaffeensis infections were reported to the Wisconsin Department of Health Services. Five cases without travel history outside of Wisconsin were confirmed as E. chaffeensis by polymerase chain reaction. Surveillance for the vector occurred from 2008 through 2015 and was based on active and passive methods, including examination of white-tailed deer, collections from live-trapped small mammals, submissions of ticks removed from wild and domestic animals through the Wisconsin Surveillance of Animals for Ticks (SWAT) program, digital or physical submissions by the public to the University of Wisconsin Insect Diagnostic or Medical Entomology laboratories, and active tick dragging...
December 23, 2016: Journal of Medical Entomology
https://www.readbyqxmd.com/read/27999317/high-accuracy-acquisition-of-3-d-flight-trajectory-of-individual-insect-based-on-phase-measurement
#10
Cheng Hu, Yunkai Deng, Rui Wang, Changjiang Liu, Teng Long
Accurate acquisition of 3-D flight trajectory of individual insect could be of benefit to the research of insect migration behaviors and the development of migratory entomology. This paper proposes a novel method to acquire 3-D flight trajectory of individual insect. First, based on the high range resolution synthesizing and the Doppler coherent processing, insects can be detected effectively, and the range resolution and velocity resolution are combined together to discriminate insects. Then, high accuracy range measurement with the carrier phase is proposed...
December 17, 2016: Sensors
https://www.readbyqxmd.com/read/27997861/comparative-fly-species-composition-on-indoor-and-outdoor-forensic-cases-in-malaysia
#11
Rizal Abdullah Syamsa, Baharudin Omar, Firdaus Mohd Salleh Ahmad, Othman Hidayatulfathi, Abd Wahid Shahrom
Forensic entomology refers to the science of collection and analysis of insect evidence in order to determine the minimum time period since death. This study aimed to investigate the occurrence of forensically important flies on 34 human remains referred to Universiti Kebangsaan Malaysia Medical Centre over a period of three years. Entomological specimens were collected at the death scenes and/or during autopsies. Live specimens were reared into adults while preserved specimens were processed for species identification...
January 2017: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/27992990/papular-urticaria-a-review-of-causal-agents-in-colombia
#12
Ana Milena Lozano, Juan Felipe López, Josefina Zakzuk, Elizabeth García
Papular urticaria is a chronic allergic reaction induced by insect bites, which is common in the tropics. The objective of this review was to deepen on epidemiological and immunological aspects of this disease, focused on data published in Latin American countries.We conducted a non-systematic review of the literature through electronic search on the epidemiology of papular urticaria, the entomological characteristics of the causative agents and associated immunological mechanisms.Several reports from medical centers suggest that papular urticaria is common in Latin America...
December 1, 2016: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/27974065/evaluation-of-the-impacts-of-climate-change-on-disease-vectors-through-ecological-niche-modelling
#13
B M Carvalho, E F Rangel, M M Vale
Vector-borne diseases are exceptionally sensitive to climate change. Predicting vector occurrence in specific regions is a challenge that disease control programs must meet in order to plan and execute control interventions and climate change adaptation measures. Recently, an increasing number of scientific articles have applied ecological niche modelling (ENM) to study medically important insects and ticks. With a myriad of available methods, it is challenging to interpret their results. Here we review the future projections of disease vectors produced by ENM, and assess their trends and limitations...
December 15, 2016: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/27940072/optimising-crime-scene-temperature-collection-for-forensic-entomology-casework
#14
Ines M J Hofer, Andrew J Hart, Daniel Martín-Vega, Martin J R Hall
The value of minimum post-mortem interval (minPMI) estimations in suspicious death investigations from insect evidence using temperature modelling is indisputable. In order to investigate the reliability of the collected temperature data used for modelling minPMI, it is necessary to study the effects of data logger location on the accuracy and precision of measurements. Digital data logging devices are the most commonly used temperature measuring devices in forensic entomology, however, the relationship between ambient temperatures (measured by loggers) and body temperatures has been little studied...
January 2017: Forensic Science International
https://www.readbyqxmd.com/read/27912247/molecular-evolution-of-insect-sociality-an-eco-evo-devo-perspective
#15
Amy L Toth, Sandra M Rehan
The evolution of eusociality is a perennial issue in evolutionary biology, and genomic advances have fueled steadily growing interest in the genetic changes underlying social evolution. Along with a recent flurry of research on comparative and evolutionary genomics in different eusocial insect groups (bees, ants, wasps, and termites), several mechanistic explanations have emerged to describe the molecular evolution of eusociality from solitary behavior. These include solitary physiological ground plans, genetic toolkits of deeply conserved genes, evolutionary changes in protein-coding genes, cis regulation, and the structure of gene networks, epigenetics, and novel genes...
January 31, 2017: Annual Review of Entomology
https://www.readbyqxmd.com/read/27873335/lip-b-1-is-a-novel-allergenic-protein-isolated-from-the-booklouse-liposcelis-bostrychophila
#16
O Ishibashi, K Sakuragi, Y Fukutomi, Y Kawakami, Y Kamata, M Sakurai, S Nakayama, H Uchiyama, H Kobayashi, H Kojima, T Inui
BACKGROUND: Booklice, belonging to the order Psocoptera, are small household insect pests that are distributed worldwide. Liposcelis bostrychophila (L. bostrychophila), a common home-inhabiting species of booklouse, infests old books, sheets of paper and stored food. Recent entomological and serological studies demonstrated that L. bostrychophila accounted for the majority of detectable insects in house dust and could be a potent inducer of respiratory allergy. Our recent proteomic analysis identified a potent allergenic protein from L...
November 22, 2016: Allergy
https://www.readbyqxmd.com/read/27860524/insect-pathogenic-fungi-genomics-molecular-interactions-and-genetic-improvements
#17
Chengshu Wang, Sibao Wang
Entomopathogenic fungi play a pivotal role in the regulation of insect populations in nature, and representative species have been developed as promising environmentally friendly mycoinsecticides. Recent advances in the genome biology of insect pathogenic fungi have revealed genomic features associated with fungal adaptation to insect hosts and different host ranges, as well as the evolutionary relationships between insect and noninsect pathogens. By using species in the Beauveria and Metarhizium genera as models, molecular biology studies have revealed the genes that function in fungus-insect interactions and thereby contribute to fungal virulence...
January 31, 2017: Annual Review of Entomology
https://www.readbyqxmd.com/read/27860521/phylogeny-and-evolution-of-lepidoptera
#18
Charles Mitter, Donald R Davis, Michael P Cummings
Until recently, deep-level phylogeny in Lepidoptera, the largest single radiation of plant-feeding insects, was very poorly understood. Over the past two decades, building on a preceding era of morphological cladistic studies, molecular data have yielded robust initial estimates of relationships both within and among the ∼43 superfamilies, with unsolved problems now yielding to much larger data sets from high-throughput sequencing. Here we summarize progress on lepidopteran phylogeny since 1975, emphasizing the superfamily level, and discuss some resulting advances in our understanding of lepidopteran evolution...
January 31, 2017: Annual Review of Entomology
https://www.readbyqxmd.com/read/27813669/micrornas-and-the-evolution-of-insect-metamorphosis
#19
Xavier Belles
MicroRNAs (miRNAs) are involved in the regulation of a number of processes associated with metamorphosis, either in the less modified hemimetabolan mode or in the more modified holometabolan mode. The miR-100/let-7/miR-125 cluster has been studied extensively, especially in relation to wing morphogenesis in both hemimetabolan and holometabolan species. Other miRNAs also participate in wing morphogenesis, as well as in programmed cell and tissue death, neuromaturation, neuromuscular junction formation, and neuron cell fate determination, typically during the pupal stage of holometabolan species...
January 31, 2017: Annual Review of Entomology
https://www.readbyqxmd.com/read/27813668/learning-in-insect-pollinators-and-herbivores
#20
Patricia L Jones, Anurag A Agrawal
The relationship between plants and insects is influenced by insects' behavioral decisions during foraging and oviposition. In mutualistic pollinators and antagonistic herbivores, past experience (learning) affects such decisions, which ultimately can impact plant fitness. The higher levels of dietary generalism in pollinators than in herbivores may be an explanation for the differences in learning seen between these two groups. Generalist pollinators experience a high level of environmental variation, which we suggest favors associative learning...
January 31, 2017: Annual Review of Entomology
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