Download and buy this stock image: Female of the Asian Tiger Mosquito Aedes albopictus biting on human skin and bloodfeeding to... - L95-1631456 from age fotostocks photo library of over 50+ million high resolution stock photos, stock pictures, videos and stock vectors
Author Summary The Asian tiger mosquito, Aedes albopictus, is a highly invasive mosquito and has spread from South East Asia to Europe, the United States and northern areas of Asia in the past 30 years. Aedes mosquitoes transmit a range of viral diseases, including dengue and chikungunya. Aedes albopictus is generally considered to be somewhat less of a concern in this regard than Aedes aegypti. However a recent mutation in the chikungunya virus dramatically increased its transmission by Aedes albopictus, causing an important outbreak in the Indian Ocean in 2006 that eventually reached Italy in 2007. This highlights the potential importance of this mosquito, which can thrive much further from the Equator than can Aedes aegypti. This paper describes the first genetic engineering of the Asian tiger mosquito. This is an essential step towards the development of genetics-based control methods against this mosquito, and also an invaluable tool for basic research. We describe both transposon-based and site
The mosquito genus Aedes includes the following species. Where known, the listings indicate whether the species bites humans, and any pathogens that the species is known to carry. names Aedes australis Aedes aboriginis - northwest coast mosquito Bites humans Aedes aegypti - yellow fever mosquito Bites humans, carries chikungunya, dengue fever, heartworm, Murray Valley encephalitis, Ross River virus, West Nile virus, Yellow Fever, Zika virus Aedes africanus Aedes albolineatus Aedes alboniveus Aedes albopictus - Asian tiger mosquito Bites humans, carries Cache Valley virus, chikungunya, dengue fever, Eastern equine encephalitis, West Nile virus, Yellow Fever, Zika virus Aedes albolineatus Aedes alboscutellatus Aedes aloponotum Aedes amesii Aedes annulipes Aedes arboricola Aedes argenteoventralis Aedes atlanticus Carries Keystone virus, West Nile virus Aedes atropalpus also spelled Aedes atropalpos Bites humans, carries La Crosse virus, Plasmodium gallinaceum, St. Louis encephalitis, West Nile ...
Arbovirus Summary Archives. (2008). Repellents, Traps, Virus Information, Maps, etc. Pest Alert. http://entomology.ifas.ufl.edu/pestalert/arbovirus/arbovirus.htm (14 May 2008). Barrera R. 1996. Competition and resistance to starvation in larvae of container-inhabiting Aedes mosquitoes. Ecological Entomology. 21: 117-127. Carpenter SJ, LaCasse WJ. 1955. Mosquitoes of North America (North of Mexico). University of California Press, Berkeley, CA. 360 pp. Centers for Disease Control. (2007). Chikungunya fever fact sheet. Division for Vector-borne Infectious Diseases: Centers for Disease Control. http://www.cdc.gov/ncidod/dvbid/chikungunya/ (13 May 2008). Centers for Disease Control. (2016). Surveillance and Control of Aedes aegypti and Aedes albopictus in the United States. Division of Vector-Borne Diseases: Centers for Disease Control. http://www.cdc.gov/chikungunya/resources/vector-control.html (4/8/2016).. Clements AN. 1999. The Biology of Mosquitoes, Vol. II. Egg laying. Cabi, Wallingford. ...
Which mosquitoes are targeted using SIT technology?. Mosquito control agencies are public health entities that control nuisance mosquitoes and the spread of mosquito-borne diseases. SIT and similar male release strategies are being explored to target the yellow fever mosquito (Aedes aegypti) and the Asian tiger mosquito (Aedes albopictus), two invasive insects in the United States that are capable of transmitting pathogens causing dengue fever, yellow fever, Zika, and chikungunya. By minimizing these mosquitoes, disease concerns could be greatly reduced.. How are SIT mosquitoes produced?. SIT was traditionally a form of radiation-based sterilization of male insects, but has begun to include other techniques that achieve the same goal. Key organizations involved in work being conducted in the United States include: United States Department of Agriculture, University of Florida Institute of Food and Agricultural Sciences, and companies such as MosquitoMate, Verily, and Oxitec. Three male release ...
Oxitec has achieved a world first by transforming the Asian tiger mosquito (Aedes albopictus), an important vector of the viral disease chikungunya. Oxitec
The Asian tiger mosquito, Aedes albopictus, is a highly successful invasive species that transmits a number of human viral diseases, including dengue and Chikungunya fevers. This species has a large genome with significant population-based size variation. The complete genome sequence was determined for the Foshan strain, an established laboratory colony derived from wild mosquitoes from southeastern China, a region within the historical range of the origin of the species. The genome comprises 1,967 Mb, the largest mosquito genome sequenced to date, and its size results principally from an abundance of repetitive DNA classes. In addition, expansions of the numbers of members in gene families involved in insecticide-resistance mechanisms, diapause, sex determination, immunity, and olfaction also contribute to the larger size. Portions of integrated flavivirus-like genomes support a shared evolutionary history of association of these viruses with their vector. The large genome repertory may ...
Aedes aegypti mosquito feeding on skin. Footage of the mosquito Aedes aegypti, feeding on human skin. Female mosquitoes feed on vertebrate blood to produce their eggs. If the mosquito is infected with a parasite or other pathogen, the saliva will transmit this to her host. The abdomen swells and turns red as the mosquito feeds on the blood of her human host. The Aedes aegypti mosquito, found throughout tropical Africa and in parts of South America, is a vector of Zika fever, yellow fever and dengue fever. - Stock Video Clip K005/6324
The Asian tiger mosquito or forest mosquito is native to the tropical and subtropical areas of Southeast Asia.. However in the past couple of decades this species has invaded many countries. Aedes albopictus is an epidemiologically important vector for the transmission of many viral pathogens, including the Yellow fever virus, dengue fever and Chikungunya fever, as well as several filarial nematodes such as Dirofilaria immitis.. ...
The Goriška region and the town of Nova Gorica itself are a hotspot for reproduction and further spreading of many plant or animal non-native species. The reason for this are its transitional position and its mild climate. In recent years an invasive species known as the tiger mosquito (Aedes albopictus Skuse, 1894) has colonized this area. Here it successfully reproduces and maintains its population. In this paper we studied the seasonal dynamics of its reproduction from the appearance of first eggs until the development of the species larvae in various urban, suburban and forested locations. We studied the presence of tiger mosquito larvae in different surroundings and tried to determine its most suitable microhabitat. In order to acquire appropriate results we used ovitraps, which are commonly used to monitor mosquito larvae in their natural environment. At the end we examined the ratio between larvae of indigenous species and tiger mosquito larvae. The data were compared to shed light on ...
This is the mouth parts of the aquatic third-stage larva of an Asian tiger mosquito, newed behin a microscope. Its been magnified 800 times. The asian tiger
The Centers for Disease Control and Prevention (CDC) reports that the chikungunya virus has not reached the U.S., but there were confirmed cases on the Caribbean Island of St. Martin in December 2013. At the time of publication, at least three travelers from the U.S. to the Caribbean have contracted the chikungunya virus. It wont be long before the Asian tiger mosquito makes its way onto U.S. soil. The CDC states that other mosquitoes that can spread the chikungunya virus and dengue are in the United States. These mosquitoes include Aedes aegypti and Aedes albopictus. Entomologists have found the species as far south as Floridas Gulf Coast and as far north and west as Chicago, Illinois.. ...
Aedes aegypti mosquitoes are primary vectors of dengue, yellow fever, chikungunya and Zika viruses. Ae. aegypti is highly anthropophilic and relies nearly exclusively on human blood meals and habitats for reproduction. Socioeconomic factors may influence the spread of Ae. aegypti due to its close relationship with humans. This paper describes and summarizes the published literature on how socioeconomic variables influence the distribution of Ae. aegypti mosquitoes in the mainland United States. A comprehensive search of PubMed/Medline, Scopus, Web of Science, and EBSCO Academic Search Complete through June 12, 2019 was used to retrieve all articles published in English on the association of socioeconomic factors and the distribution of Ae. aegypti mosquitoes. Additionally, a hand search of mosquito control association websites was conducted in an attempt to identify relevant grey literature. Articles were screened for eligibility using the process described in the Preferred Reporting Items for
Dengue is of great concern in various parts of the world, especially in tropical and subtropical countries where the mosquito vectors Aedes aegypti and Aedes albopictus are present. The transmission of this virus to humans, by what is known as horizontal transmission, occurs through the bite of infected females of one or other of the two mosquito species. Furthermore, an infected female or male parent, by what is known as vertical transmission, can transfer this arbovirus to some part of their offspring. Considering that vertical transmission may represent an important strategy for maintaining the circulation of arboviruses in nature, the verification of this phenomenon worldwide is extremely important and necessary to better understand its dynamic. In the present study, we conducted a literature review of the presence of natural vertical transmission of dengue virus in Ae. aegypti and Ae. albopictus worldwide. Searches were conducted in MEDLINE, sciELO and Lilacs and all the studies published in
Basseterre, St. Kitts, September 21, 2016 (SKNIS): Local retired entomologist Dr. Sam Rawlins said that it is possible to reduce the prevalence of the zika-carrying aedes aegypti mosquito if all members of the community become involved in what he terms "integrated vector management.". "Im preaching the message of integrated vector management for disease transmission interruption," Dr. Rawlins said. "And what I mean by that, is using all the tools that we have and using them in a rational combination of all the methods. We and our partners can collaborate in reducing these habitats and using the various tools because theres a whole range of tools that we have.". Dr. Rawlins explained that while there are approximately 13 species of mosquito on-island, the one that causes the greatest threat is the aedes aegypti mosquito because of its disease-carrying capability.. The integrated method includes using tools such as environmental control that involves emptying and removing containers that can ...
CITY NEWS SERVICE. EL MONTE - An aggressive species of mosquito responsible for outbreaks of dengue virus in Florida, Hawaii and Texas has been found in El Monte, officials said Tuesday.. Asian tiger mosquitoes are aggressive biters and active during daylight hours, as well as at dusk and dawn, according to the San Gabriel Valley Mosquito and Vector Control District, the agency responsible for mosquito control in the area.. "Our goal is to eradicate this population," said Kenn Fujioka, the districts assistant manager. "We definitely do not want this mosquito to become established in our communities.". The black-and-white striped insect, about a quarter-inch long, is a native of tropical and subtropical Southeast Asia and has not been seen in the San Gabriel Valley since 2001, when they were accidentally imported in shipments of plants called "Lucky Bamboo.". The pest can transmit many serious diseases, including dengue fever, yellow fever; chikungunya, which is similar to dengue fever; ...
Background Dengue and chikungunya are global re-emerging mosquito-borne diseases. In Singapore, sustained vector control coupled with household improvements reduced domestic mosquito populations for the past 45 years, particularly the primary vector Aedes aegypti. However, while disease incidence was low for the first 30 years following vector control implementation, outbreaks have re-emerged in the past 15 years. Epidemiological observations point to the importance of peridomestic infection in areas not targeted by control programs. We investigated the role of vectors in peri-domestic areas. Methods We carried out entomological surveys to identify the Aedes species present in vegetated sites in highly populated areas and determine whether mosquitoes were present in open-air areas frequented by people. We compared vector competence of Aedes albopictus and Aedes malayensis with Ae. aegypti after oral infection with sympatric dengue serotype 2 and chikungunya viruses. Mosquito saliva was tested ...
Oxitec scientists have reported the creation of a new flightless strain of the Asian tiger mosquito, Aedes albopictus. The breakthrough, reported in the jo
Some photographs of me donating blood. The first is, I think, an Asian rock pool mosquito (Ochlerotatus japonicus japonicus; formerly known as Aedes japonicus japonicus). The second is an Asian tiger mosquito (Aedes albopictus). Introduced to New Jersey in 1998 and Texas in 1985, respectively. Both photographs were taken in Pennsylvania. ...
Aedes aegypti is the principal vector of the etiological agents of yellow fever, dengue fever and chikungunya fever. In 1901, Walter Reed and colleagues showed that yellow fever was transmitted by Aedes aegypti. Their work was based on Carlos Finlays hypothesis that mosquito bites could transmit the organism causing the disease. Due to its easy adaptation to laboratory culture it is the most studied species within the Culicinae, and has extensively contributed to our understanding of mosquito biology, physiology, genetics, and vector competence.. The Aedes aegypti complete genome sequence was first published in 2007. About 47% of the genome consists of transposable elements, probably contributing to the expansion in size and organization of the Aedes aegypti genome over time. ...
Experts say an extremely aggressive and an obnoxious breed of mosquitoes called the Asian Tiger Mosquito is going to swarm New Jersey.
The extremely invasive mosquito Aedes (Stegomyia) albopictus Skuse 1894, a known vector of various human pathogens like dengue and chikungunya viruses, is gradually extending its distribution to colder climate regions [1]. At present, the northernmost breeding populations of this species in Europe occur in Freiburg [2], Heidelberg and Jena, Germany (Norbert Becker, personal communication, June 2016). A further spread of Ae. albopictus into the Rhine rift valley and parts of Bavaria and North Rhine-Westphalia, Germany, is very likely due to climatic habitat suitability and man-made features [3, 4]. Apart from the frequently suboptimal low temperatures in these regions, the establishment of Ae. albopictus may be modulated by interactions with resident container-breeding mosquitoes [5-7].. Aedes albopictus was shown to be a strong competitor for resident mosquito species such as Aedes triseriatus as well as exotic species like Aedes aegypti in the United States of America [7, 8]. However, ...
Arthropod-borne viruses (arboviruses) can persistently infect and cause limited damage to mosquito vectors. RNA interference (RNAi) is a mosquito antiviral response important in restricting RNA virus replication and has been shown to be active against some arboviruses. The goal of this study was to use a recombinant Sindbis virus (SINV; family Togaviridae; genus Alphavirus) that expresses B2 protein of Flock House virus (FHV; family Nodaviridae; genus Alphanodavirus), a protein that inhibits RNAi, to determine the effects of linking arbovirus infection with RNAi inhibition. B2 protein expression from SINV (TE/32J) inhibited the accumulation of non-specific small RNAs in Aedes aegypti mosquito cell culture and virus-specific small RNAs both in infected cell culture and Ae. aegypti mosquitoes. More viral genomic and subgenomic RNA accumulated in cells and mosquitoes infected with TE/32J virus expressing B2 (TE/32J/B2) compared to TE/32J and TE/32J virus expressing GFP. TE/32J/B2 exhibited increased
73. Andrew J Maynard, Luke Ambrose, Robert D Cooper, Weng K Chow, Joseph B Davis, Mutizwa O Muzari, Andrew F van den Hurk, Sonja Hall-Mendelin, Jeomhee M Hasty, Thomas R Burkot, Michael J Bangs, Lisa J Reimer, Charles Butafa, Neil F Lobo, Din Syafruddin, Yan Naung Maung Maung, Rohani Ahmad, Nigel W Beebe. (2017). Tiger on the prowl: Invasion history and spatio-temporal genetic structure of the Asian tiger mosquito Aedes albopictus (Skuse 1894) in the Indo-Pacific. PLOS Neglected Tropical Diseases 11 (4), e0005546 ...
TY - JOUR. T1 - The Aedes aegypti glutathione transferase family. AU - Somboon, P.. AU - Severson, D. W.. AU - Lumjuan, N.. AU - Stevenson, B. J.. AU - Prapanthadara, L.. AU - Ranson, H.. AU - Brophy, Peter M.. AU - Loftus, B. J.. N1 - Lumjuan, N., Stevenson, B. J., Prapanthadara, L., Somboon, P., Brophy, P. M., Loftus, B. J., Severson, D. W., Ranson, H. (2007). The Aedes aegypti glutathione transferase family. Insect Biochemistry and Molecular Biology, 37, (10), 1026-1035.. PY - 2007/10. Y1 - 2007/10. N2 - In this report, we describe the glutathione transferase (GST) gene family in the dengue vector Aedes aegypti and suggest a novel role for a new class of mosquito GSTs. Twenty-six GST genes are present in Ae. aegypti, two of which are alternatively spliced to give a total of 29 transcripts for cytosolic GSTs. The six classes identified in other insect species are all represented and, as in Anopheles gambiae, the majority of the mosquito GSTs belong to the insect-specific Delta and Epsilon ...
Abstract. Diurnal temperature fluctuations can fundamentally alter mosquito biology and mosquito-virus interactions in ways that impact pathogen transmission. We investigated the effect of two daily fluctuating temperature profiles on Aedes aegypti vector competence for dengue virus (DENV) serotype-1. A large diurnal temperature range of 18.6°C around a 26°C mean, corresponding with the low DENV transmission season in northwestern Thailand, reduced midgut infection rates and tended to extend the virus extrinsic incubation period. Dissemination was first observed at day 7 under small fluctuations (7.6°C; corresponding with high DENV transmission) and constant control temperature, but not until Day 11 for the large diurnal temperature range. Results indicate that female Ae. aegypti in northwest Thailand are less likely to transmit DENV during the low than high transmission season because of reduced DENV susceptibility and extended virus extrinsic incubation period. Better understanding of DENV
Meksianis Zadrak Ndii, Roslyn I Hickson, Geoffry N Mercer Abstract Infecting Aedes aegypti mosquitoes with the bacteria Wolbachia has been proposed as an innovative new strategy to reduce the transmission of dengue fever. Field trials are currently being undertaken in Queensland, Australia. However, few mathematical models have been developed to consider the persistence of Wolbachia-…
TY - JOUR. T1 - Evolutionary enhancement of Zika virus infectivity in Aedes aegypti mosquitoes. AU - Liu, Yang. AU - Liu, Jianying. AU - Du, Senyan. AU - Shan, Chao. AU - Nie, Kaixiao. AU - Zhang, Rudian. AU - Li, Xiao Feng. AU - Zhang, Renli. AU - Wang, Tao. AU - Qin, Cheng Feng. AU - Wang, Penghua. AU - Shi, Pei Yong. AU - Cheng, Gong. PY - 2017/5/25. Y1 - 2017/5/25. N2 - Zika virus (ZIKV) remained obscure until the recent explosive outbreaks in French Polynesia (2013-2014) and South America (2015-2016). Phylogenetic studies have shown that ZIKV has evolved into African and Asian lineages. The Asian lineage of ZIKV was responsible for the recent epidemics in the Americas. However, the underlying mechanisms through which ZIKV rapidly and explosively spread from Asia to the Americas are unclear. Non-structural protein 1 (NS1) facilitates flavivirus acquisition by mosquitoes from an infected mammalian host and subsequently enhances viral prevalence in mosquitoes. Here we show that NS1 ...
Trinidad and Tobago, May 5, 2017 - Port of Spain - "Community participation is critical to the success of any programme designed to eliminate breeding sites of the Aedes aegypti mosquito. Efforts are doomed to failure if even one household is negligent." So said Dr C James Hospedales, Executive Director of the Caribbean Public Health Agency (CARPHA), as he commented on the importance of Caribbean Mosquito Awareness Week, which is being observed from May 8-12. In his assessment of the mosquito prevention efforts in the Region thus far, Dr Hospedales noted that strategies for the control of the mosquito, which causes Dengue, Chikungunya and Zika are failing, and stated that what is needed is an "all hands onboard approach." Dr Karen Polson Edwards, CARPHA Assistant Director of Surveillance, Disease Prevention Control, supports this "all hands onboard approach perspective" as she said, "mosquitoes are social creatures and we are their preferred host. Their breeding sites are mostly man-made water ...
Zika virus is spread through the bite of infected mosquitoes in the Aedes genus, the same mosquitoes that carry dengue fever and chikungunya.. The primary carrier, Aedes aegypti, also called yellow fever mosquito, is found predominantly in tropical and sub-tropical regions of the United States.. Aedes albopictus mosquitoes are also presumed to transmit the virus. This species, commonly known as the Asian tiger mosquito, has a much wider distribution in the U.S and in addition to the southeast, is found in northeastern and mid-west states.. Other diseases transmitted by mosquitoes, include Malaria, West Nile virus, Yellow fever, Filariasis, Dengue fever and Encephalitis kill and debilitate millions of persons worldwide even with todays advances in medicine.. ...
Maintain strong emphasis on prevention form being bitten by Mosquito. Use long sleeves, light coloured clothes, trousers, socks and closed shoes at the mosquito´s most active period (sunrise and sunset) and repellents containing DEET, as well as reducing and eliminating breeding grounds for the Aedes aegypti mosquito, vector of the Dengue fever ...
The Aedes aegypti mosquito can transmit the viruses that cause dengue fever. The female mosquito lays eggs in containers with water and plants near the home. It bites people and animals. This species can survive year round in tropical and subtropical climates ...
We know that Aedes aegypti and Aedes albopictus mosquitoes prefer not to share their oviposition sites with each other. However, they are excited to share amongst individuals of their own species. We will touch more on this phenomenon in a future post. It is also reasonable to assume that we cannot control all potential oviposition sites in a real world scenario. Can these pieces be used in a solution?. A 2003 study at North Carolina State University found that the insect growth regulator pyriproxyfen was effective at inhibiting the development from larva to adult Aedes mosquito. At only 0.2 parts per billion (approximately 0.2 micrograms per liter water), pyriproxyfen kept 50% of Aedes albopictus larvae from reaching adulthood. This is such a small amount of pyriproxyfen that it could be transferred to an untreated or uncontrolled oviposition site on the legs of ovipositing mosquitoes. A single female visiting a clean container reduced adult emergence by 4-30%, but it could reduce adult ...
The ovitrap has been used in several countries to monitor Aedes spp.88 Beserra EB, Ribeiro OS, Oliveira SA. Flutuação populacional e comparação de métodos de coleta de Aedes (Stegomyia) aegypti (Diptera, Culicidae). Iheringia, Sér. Zool. 2014; 5(4):418-425.,99 Roque RA. Avaliação de armadilhas iscadas com infusões de gramíneas como atraentes e/ou estimulantes de oviposição do mosquito Aedes (Stegomyia) sp. (Diptera: Culicidae) [dissertação]. Belo Horizonte: Universidade Federal Minas Gerais; 2002.,1111 Gomes ADC. Medidas dos níveis de infestação urbana para Aedes (Stegomyia) aegypti e Aedes (Stegomyia) albopictus em programa de vigilância entomológica. Info. Epid. do SUS 1998; 17(7):49-57.. In the municipality of Dili, the ovitrap proved to be a highly sensitive tool for monitoring Aedes infestation, providing data at short (weekly) intervals and continuously.. The weekly monitoring highlighted the Dom Aleixo Administrative Post with 62.5% of the eggs collected compared to the ...
Five species of invasive Aedes mosquitoes have recently become established in Europe: Ae. albopictus, Ae. aegypti, Ae. japonicus japonicus, Ae. koreicus and Ae. atropalpus. These mosquitoes are a serious nuisance for people and are also competent vectors for several exotic pathogens such as dengue and chikungunya viruses. As they are a growing public health concern, methods to control these mosquitoes need to be implemented to reduce their biting and their potential for disease transmission. There is a crucial need to evaluate methods as part of an integrated invasive mosquito species control strategy in different European countries, taking into account local Aedes infestations and European regulations. This review presents the control methods available or in development against invasive Aedes mosquitoes, with a particular focus on those that can be implemented in Europe. These control methods are divided into five categories: environmental (source reduction), mechanical (trapping), biological ...
A study has found a track by Skrillex, the electronic artist known for his dubstep music, could be an effective way to protect against mosquitoes.Insect and disease scientists from around the world played the electronic music to yellow fever mosquitoes (aedes aegypti) to investigate the effects.
Read the full review here Community mobilisation programmes are an effective intervention to reduce Aedes aegypti entomological indices. Aedes aegypti mosquito is the vector for dengue fever, yellow fever, chikungunya, and zika viruses. ...
The control of dengue fever depends on the level of Aedes aegypti infestation and thus relies heavily on the measures for controlling the vector. Quite recently, despite the implementation of mosquito control measures, the Aedes aegypti population has still escalated. The vector apparently has adapted to or resisted most of the control methods. The failure of Aedes aegypti control programmes has been blamed on the vectors biological features fostering the development of species resistance to chemical control or environmental factors favouring the increase of the Aedes aegypti population at a faster rate than the control methods can reduce them. Nevertheless, many Aedes aegypti control programmes are improperly planned and implemented or the control measures are often used as reactive methods of controlling dengue fever outbreaks, rather than as continuous proactive strategies preventing disease. Aedes aegypti breeding is basically a problem of domestic sanitation and therefore communities have ...
Abstract: The Asian tiger mosquito is an invasive species showing a continuous expansion in the Mediterranean basin in general and in Spain in particular. The first detection of Aedes albopictus in mainland Spain was reported in 2004. Eight years later, in 2012, this mosquito species was detected in the Balearic archipelago, specifically on Majorca. In 2014 it was detected on Eivissa, another island from this archipelago. In this paper we report for the first time the presence of Ae. albopictus on the island of Minorca. Journal of the European Mosquito Control Association 34: 5-9, 2016. ...
Zika is primarily spread by the female Aedes aegypti mosquito, which is active mostly in the daytime.[44][45] The mosquitos must feed on blood to lay eggs.[46]:2 The virus has also been isolated from a number of arboreal mosquito species in the genus Aedes, such as A. africanus, A. apicoargenteus, A. furcifer, A. hensilli, A. luteocephalus, and A. vittatus, with an extrinsic incubation period in mosquitoes around 10 days.[21]. The true extent of the vectors is still unknown. Zika has been detected in many more species of Aedes, along with Anopheles coustani, Mansonia uniformis, and Culex perfuscus, although this alone does not incriminate them as vectors.[45] To detect the presence of the virus usually requires genetic material to be analysed in a lab using the technique RT-PCR. A much cheaper and faster method involves shining a light at the head and thorax of the mosquito, and detecting chemical compounds characteristic of the virus using near-infrared spectroscopy.[47]. Transmission by A. ...
The Aedes albopictus ("Asian Tiger") mosquitoes which can transmit Zika, Chikungunya, and Dengue Fever viruses, have adapted very well to human habitats, by being able to lay eggs that survive long periods without water and that can hatch and grow into larvae after a rain shower in a container as small as a bottle cap. Differing greatly in habitat from the more familiar marsh mosquitos that thrive near marshes in tidal zones, the Asian Tiger mosquitos, with recognizable white striped legs, feeds during daylight hours when people are most likely to be outside, versus the marsh mosquitoes that primarily feed at dusk.. There are many things that families on the Eastern Shore of Virginia can do to protect themselves from mosquitos on their own property and in their community:. 1. Reduce mosquito breeding grounds by eliminating standing water on your property ...
Aedes albopictus larvae cells (C6/36). Need Help, please. - posted in Cell Biology: Hi, everyone, I have a problem with my C636 cells, today all of them seemed dead. Well, Im using Leibovitz - 15 medium with no buffer system. Incubation at 28 °C with no CO2. And additional of conjugated Penicillin/Streptomycin and Anfotericin B. I dont know what happened, the cells was just fine in one bottle, and then, after subculture to 2 new flasks: all dead. Beside...
Link to Pubmed [PMID] - 30753180. PLoS Negl Trop Dis 2019 Feb;13(2):e0007116. BACKGROUND: Transmission of dengue virus (DENV) from humans to mosquitoes represents a critical component of dengue epidemiology. Examinations of this process have generally been hampered by a lack of methods that adequately represent natural acquisition of DENV by mosquitoes from humans. In this study, we assessed artificial and natural blood feeding methods based on rates of DENV infection and dissemination within mosquitoes for use in a field-based epidemiological cohort study in Iquitos, Peru.. METHODOLOGY/PRINCIPAL FINDINGS: Our study was implemented, stepwise, between 2011 and 2015. Participants who were 5 years and older with 5 or fewer days of fever were enrolled from ongoing clinic- and neighborhood-based studies on dengue in Iquitos. Wild type, laboratory-reared Aedes aegypti were fed directly on febrile individuals or on blood collected from participants that was either untreated or treated with EDTA. ...
Beyond Pesticides, May 1, 2017) The Florida Keys Mosquito Control District released 20,000 male mosquitoes infected with Wolbachia bacteria near Key West, as a trial strategy to manage mosquitoes that carry Zika and other viruses. The district and others have been exploring new ways to suppress infected Aedes aegypti mosquito populations, which thrive in urban environments and can spread Zika, dengue fever, and chikungunya. It is unclear what impacts, if any, these infected mosquitoes will have on non-target organisms or public health. The trial is the second U.S. test conducted with the naturally occurring Wolbachia bacteria in Aedes aegypti mosquitoes, developed by the Kentucky-based company MosquitoMate. The first test occurred in Clovis, California, last year. In September 2016, the U.S. Environmental Protection Agency (EPA), which registers mosquito control products, approved and expanded an experimental use permit (EUP) for Wolbachia pipientis-infected Aedes aegypti mosquitoes (not to be ...
On Tuesday, April 19, at their public meeting on or after 9:00 a.m. the County Board of Supervisors reviewed a report presented by the Agricultural Commissioners Mosquito and Vector Control (MVC) district, in collaboration with the Health Services Agency, about local response plans for invasive mosquitoes and exotic diseases new to California.. In addition to our native mosquitoes, there are two invasive mosquitoes species that have recently been found in parts of California: Aedes aegypti (the yellow fever mosquito) and Aedes albopictus (the Asian tiger mosquito).. These mosquitoes are more aggressive than our native mosquitoes, are black-and-white striped, and tend to bite people during the day. They lay their eggs in very small containers of water (bottles, buckets, plant saucers) and prefer living in and around homes. They are responsible for transmitting the diseases dengue, chikungunya, and most recently Zika in various parts of the world.. Currently, all California cases of these ...
Abstract Dispersal of Aedes aegypti aegypti adults within Shauri Moyo, an African village in the Rabai area north of Mombasa, Kenya, was studied using the mark-release-recapture method. A total of 920 mosquitoes were captured and uniquely marked, of which 828 (90%) were released and 332 (40%) recaptured. A great majority of mosquitoes were recaptured once, but some individuals were recaptured up to 10 times. Most females visited 1 or 2 houses (40.8%, 44.9%, respectively), but there were females that visited as many as 5 houses. Mosquito movement among houses of the village is summarized in tables. Dispersal ability of Aedes aegypti females was d = 0.592 and males d = 0.433. The maximum distance females and males moved per 24 hr was 154 m and 113 m, respectively. The mean distance rate was 57.0 m/day for females and 44.2 m/day for males. The size of the mosquito population at Shauri Moyo village was estimated to be 331.1 ± 146.5 using the Lincoln index method, 533.3 by the Fisher and Ford method, 270.3
The susceptibility of field collected Aedes aegypti larvae was evaluated in terms of median lethal time (LT50) and final mortality, when treated with temephos, Bacillus thuringiensis var israelensis as well as mixtures of these two agents. Third instar larvae were shown to be more susceptible than early and late fourth instar ones to the entomopathogen. Survival of some individuals when exposed to temephos suggest possible resistance. Temporal synergism in early fourth instar larvae was detected when they were exposed to mixtures of Bti-temephos. The possibility of this integrated treatment is commented on ...
TY - JOUR. T1 - Quantifying Aedes aegypti dispersal in space and time. T2 - a modeling approach. AU - Marcantonio, Matteo. AU - Reyes, Trinidad. AU - Barker, Christopher M.. PY - 2019/12/1. Y1 - 2019/12/1. N2 - The dispersal of the invasive mosquito Aedes aegypti in urbanized areas has received attention due to the hazard that this species poses to human health. However, we know little about this process at temperate latitudes, especially in recently colonized semi-arid regions of the southwestern United States that differ ecologically from more typical habitats in the tropics. We collected data on Ae. aegypti dispersal through a mark-release-recapture (MRR) study in Central California. We employed stable isotopes of carbon and nitrogen to mark released mosquitoes. We characterized Ae. aegypti dispersal capacity using both traditional measures of central tendency and dispersal kernel theory coupled with space-time models, allowing for effects of environmental factors to provide more reliable ...
Aedes aegypti is arguably the most studied of all mosquito species in the laboratory and is the primary vector of both Dengue and Yellow Fever flaviviruses in the field. A large number of transcriptional studies have been made in the species and these usually report transcript quantities observed at a certain age or stage of development. However, circadian oscillation is an important characteristic of gene expression in many animals and plants, modulating both their physiology and behavior. Circadian gene expression in mosquito species has been previously reported but for only a few genes directly involved in the function of the molecular clock. Herein we analyze the transcription profiles of 21,494 messenger RNAs using an Ae. aegypti Agilent® microarray. Transcripts were quantified in adult female heads at 24 hours and then again at 72 hours and eight subsequent time points spaced four hours apart. We document circadian rhythms in multiple molecular pathways essential for growth, development, immune
Dear Editor,. Aedes aegypti aegypti, commonly abbreviated as Ae. aegypti, can be differentiated from Ae. aegypti formosus, a purely sylvatic species in sub-Saharan Africa, whose immature forms mostly inhabit holes in stones and trees, and have also been collected in bamboo traps1. Aedes aegypti eggs show good adaptation ability to other vessels and strong resistance to desiccation, which has facilitated its transportation to several regions worldwide by humans2. It invaded the American continent through trading and slaving ships, subsequently adapting to a large area and transmitting yellow fever virus in cities across the continent, ranging from Baltimore in the United States to Buenos Aires in Argentina3, and has since been incriminated in the transmission of several arboviruses4. It has also been reported to rarely invade sylvatic environments in Rio de Janeiro5, as well as in rock holes in Anguilla and in tree holes in New Orleans6, and was found in tree holes in the Caribbean among 12 types ...