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PubMed Journals Articles About "Manipulating Mosquito Tolerance Arbovirus Control" - Page: 2 RSS

02:24 EST 15th November 2019 | BioPortfolio

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Showing "Manipulating Mosquito Tolerance Arbovirus Control" PubMed Articles 26–50 of 17,000+

On lifestyle trends, health and mosquitoes: Formulating welfare levels for control of the Asian tiger mosquito in Greece.

The expansion of urban ecosystems and climate change, both outcomes of massive lifestyle changes, contribute to a series of side effects such as environmental deterioration, spread of diseases, increased greenhouse gas emissions and introduction of invasive species. In the case of the Athens metropolitan area, an invasive mosquito species-the Asian tiger mosquito (Aedes albopictus)-has spread widely in the last decade. This spread is favoured within urban environments and is also affected by changing climat...


Identification of gravid mosquitoes from changes in spectral and polarimetric backscatter cross-sections.

Improving the survey of mosquito populations is of the utmost importance to further enhance mitigation techniques that protect human populations from mosquito-borne diseases. While mosquito populations are generally studied using physical traps, stand-off optical sensors allow to study insect ecosystems with potentially better spatial and temporal resolution. This can be greatly beneficial to eco-epidemiological models and various mosquito control programs. In this contribution, we demonstrate that the grav...

Enhanced vector surveillance to control arbovirus epidemics in Colombia.

In the wake of the Zika epidemic, there has been intensified interest in the surveillance and control of the arbovirus vectors and , yet many existing surveillance systems could benefit from improvements. Vector control programs are often directed by national governments, but are carried out at the local level, resulting in the discounting of spatial heterogeneities in ecology and epidemiology. Furthermore, entomological and epidemiological data are often collected by separate governmental entities, which ...


Impact of Storage and Handling Temperatures On the Activities of Mosquito Larvicides.

Larvicides based on , (formerly ), and insect growth regulators such as methoprene, and a few others are the most commonly used mosquito control products in the United States and elsewhere because of their relative specificity and high effectiveness against target organisms, safety to nontarget species, and compatibility with the environment. Using standard laboratory bioassay, we have evaluated the loss of larvicidal activities of various formulations after being exposed to different storage and handling...

Assessing Mosquito Breeding Sites and Abundance Using An Unmanned Aircraft.

An unmanned aircraft system (UAS; i.e., drone) with an attached multispectral camera was used to quantify accumulated surface water on a 0.54-km tidal marsh that abuts San Francisco Bay, CA, USA. The results of the survey showed unequal accumulation of surface water and provided information for focused inspections of potential mosquito breeding areas and identified areas where existing ditches needed improvement for increasing water circulation in the marsh to reduce mosquito breeding. The UAS was also outf...

A Population Dynamics Model of Mosquito-Borne Disease Transmission, Focusing on Mosquitoes' Biased Distribution and Mosquito Repellent Use.

We present an improved mathematical model of population dynamics of mosquito-borne disease transmission. Our model considers the effect of mosquito repellent use and the mosquito's behavior or attraction to the infected human, which cause mosquitoes' biased distribution around the human population. Our analysis of the model clearly shows the existence of thresholds for mosquito repellent efficacy and its utilization rate in the human population with respect to the elimination of mosquito-borne diseases. Fur...

Evaluation of Barrier Sprays for Controlling Mosquitoes in Eastern North Carolina: Can Land Cover and Spatial Analyses Improve Predictions of Efficacy?

Mosquitoes can be a nuisance and can transmit pathogens causing numerous diseases. Homeowners may hire private companies that use barrier sprays to alleviate mosquito-related issues, especially in areas where government funding for mosquito control programs is limited. Here, the spatial distribution of mosquitoes was evaluated in a suburban neighborhood during successive treatments with either Bifen Insecticide/Termiticide (active ingredient: bifenthrin) or Suspend Polyzone (active ingredient: deltamethrin)...

Field Trials to Evaluate the Effectiveness of the Biogents®-Sweetscent Lure in Combination with Several Commercial Mosquito Traps and to Assess the Effectiveness of the Biogents-Mosquitaire Trap with and Without Carbon Dioxide.

A series of field experiments was conducted in Florida, California, and Louisiana in order to investigate whether adding the Biogents® (BG)-Sweetscent lure to several commercially available mosquito traps increases their catch rates and to evaluate the BG-Mosquitaire trap with and without CO. Adding the BG-Sweetscent to the SkeeterVac Bite-Guard SVE6211, MosClean UV LED (ultraviolet light-emitting diode), Flowtron® Galaxie PV 75, Dynatrap® DT2000XL, Bite Shield Protector, and Black Flag® BZ-40 increase...

Ophthalmic manifestations of arbovirus infections in adults.

Emerging arbovirus infections have classic symptoms such as fever, arthralgia, or rash. As some of them have ophthalmic symptoms/signs, the main objective is to evaluate whether these findings could help to clarify the clinical diagnosis.

Toxicity and Repellency of Two Anthranilates against Aedes albopictus Skuse (Diptera: Culicidae).

The ability of Aedes albopictus Skuse to transmit several pathogens to humans makes it a very important mosquito with public health significance. Ecofriendly products as alternatives to synthetic chemicals for the control of mosquito vectors are needed. Therefore, the larvicidal and repellent effects of two nontoxic chemicals, butyl anthranilate (BA) and ethyl anthranilate (EA), at different concentrations were compared in Ae. albopictus. The repellency persistence of BA and three commercial mosquito repell...

2018 Highlights of Mosquito and Vector Biology and Control in Latin America.

The 28th Annual Latin American Symposium presented by the American Mosquito Control Association (AMCA) was held as part of the 84th Annual Meeting of the AMCA held in Kansas City, MO, in February 2018. The Latin American Symposium promotes the participation of vector control specialists, public health workers, and academic members from Latin America and the sharing of scientific data between continents. Generally, presentations are in Spanish with simultaneous translation into English. The majority of prese...

A Model of Abundance Constructed Using Routine Surveillance and Treatment Data in Tarrant County, Texas.

Mosquito surveillance and pesticide treatment data can be combined in statistical models to provide insight into drivers of mosquito population dynamics. In cooperation with the county-based public health authority, multiple municipalities in Tarrant County, Texas, supplied surveillance and pesticide treatment data available from the 2014 mosquito season for analysis. With these data, general linear mixed modeling was used to model population dynamics of the primary vector for West Nile virus. Temporally l...

Wolbachia prevalence, diversity, and ability to induce cytoplasmic incompatibility in mosquitoes.

To protect humans and domestic animals from mosquito borne diseases, alternative methods to chemical insecticides have to be found. Pilot studies using the vertically transmitted bacterial endosymbiont Wolbachia were already launched in different parts of the world. Wolbachia can be used either in Incompatible Insect Technique (IIT), to decrease mosquito population, or to decrease the ability of mosquitoes to transmit pathogens. Not all mosquito species are naturally infected with Wolbachia: while in Culex ...

Genomic Epidemiology as a Public Health Tool to Combat Mosquito-Borne Virus Outbreaks.

Next-generation sequencing technologies, exponential increases in the availability of virus genomic data, and ongoing advances in phylogenomic methods have made genomic epidemiology an increasingly powerful tool for public health response to a range of mosquito-borne virus outbreaks. In this review, we offer a brief primer on the scope and methods of phylogenomic analyses that can answer key epidemiological questions during mosquito-borne virus public health emergencies. We then focus on case examples of ou...

Liaisons dangereuses: cross-border gene flow and dispersal of insecticide resistance-associated genes in the mosquito Aedes aegypti from Brazil and French Guiana.

In recent years, South America has suffered the burden of continuous high impact outbreaks of dengue, chikungunya and Zika. Aedes aegypti is the main mosquito vector of these arboviruses and its control is the only solution to reduce transmission.

A fungal pathogen deploys a small silencing RNA that attenuates mosquito immunity and facilitates infection.

Insecticidal fungi represent a promising alternative to chemical pesticides for disease vector control. Here, we show that the pathogenic fungus Beauveria bassiana exports a microRNA-like RNA (bba-milR1) that hijacks the host RNA-interference machinery in mosquito cells by binding to Argonaute 1 (AGO1). bba-milR1 is highly expressed during fungal penetration of the mosquito integument, and suppresses host immunity by silencing expression of the mosquito Toll receptor ligand Spätzle 4 (Spz4). Later, upon en...

Novel odor-based strategies for integrated management of vectors of disease.

The proven ability of vector mosquitoes to adapt to various strategies developed to control them has enabled mosquito-borne diseases such as malaria, dengue, and lymphatic filariasis to remain entrenched as public health threats all over the world. Rather than continuing to seek a miracle cure for all mosquito vector problems among the ranks of single mode-of-action chemical pesticides, today's developers of vector control strategies are increasingly turning to more integrated, varied techniques, relying on...

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Linking nutrient stoichiometry to Zika virus transmission in a mosquito.

Food quality and quantity serve as the basis for cycling of key chemical elements in trophic interactions; yet the role of nutrient stoichiometry in shaping host-pathogen interactions is under appreciated. Most of the emergent mosquito-borne viruses affecting human health are transmitted by mosquitoes that inhabit container systems during their immature stages, where allochthonous input of detritus serves as the basal nutrients. Quantity and type of detritus (animal and plant) were manipulated in microcosms...

AMCA Bylaws.

Prediction of mosquito species and population age structure using mid-infrared spectroscopy and supervised machine learning.

Despite the global efforts made in the fight against malaria, the disease is resurging. One of the main causes is the resistance that mosquitoes, vectors of the disease, have developed to insecticides. must survive for at least 10 days to possibly transmit malaria. Therefore, to evaluate and improve malaria vector control interventions, it is imperative to monitor and accurately estimate the age distribution of mosquito populations as well as their population sizes. Here, we demonstrate a machine-learning...

Comparative study of the key enzymes and biochemical substances involved in the energy metabolism of Pacific white shrimp, Litopenaeus vannamei, with different ammonia-N tolerances.

Pacific white shrimp, Litopenaeus vannamei (9.38 ± 0.17 cm, 10.08 ± 0.35 g), with different ammonia-N tolerances were exposed to NH (1.61 mg/L) for 192 h, and the levels of key enzymes and biochemical substances involved in energy metabolism were compared to assess the role of the regulation of energy metabolism on the shrimp's adaptation to ammonia-N stress. Higher ammonia-N tolerance in the shrimp (Tolerance group) was achieved through nutritional fortification, whereas shrimp that were ...

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