Another new mosquito species has made its way across the tropics into Florida, making a permanent home in at least three counties. Scientists are concerned because of the rate of new mosquitoes arriving in Florida and the ...
Plants & Animals
Mar 22, 2023
0
328
The appearance of infectious diseases in new places and new hosts, such as West Nile virus and Ebola, is a predictable result of climate change, says a noted zoologist affiliated with the Harold W. Manter Laboratory of Parasitology ...
Ecology
Feb 15, 2015
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1153
If you think there were more mosquitoes this year than usual, you're not wrong.
Plants & Animals
Sep 22, 2023
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50
(Phys.org)—Mosquito-borne infectious diseases are a huge public health burden, which carry high human and economic costs. Malaria, Chikungunya, West Nile virus and dengue are difficult to treat, and controlling the disease ...
Despite decades of decline, a genetic analysis of ruffed grouse reveals that Pennsylvania's state bird harbors more genetic diversity and connectivity than expected. The findings suggest that the iconic game bird could be ...
Ecology
Oct 4, 2023
0
127
The itchy marks left by the punctured bite of a mosquito are more than pesky, unwelcomed mementos of a day at the lake.
Plants & Animals
Jul 16, 2015
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843
Studies of a protein that fruit flies use to sense heat and chemicals may someday provide solutions to human pain and the control of disease-spreading mosquitoes.
Cell & Microbiology
Dec 6, 2011
0
0
Scientists estimate that there is a minimum of 320,000 viruses in mammals awaiting discovery. Collecting evidence of these viruses, or even a majority of them, they say, could provide information critical to early detection ...
Cell & Microbiology
Sep 3, 2013
0
0
People in Britain feed up to 196 million birds a year with 60,000 tonnes of bird food, at a total cost of £300 million. All those garden feeders have helped boost populations of dozens of bird species, including the garden ...
Ecology
May 28, 2020
0
88
A study led by UC Santa Cruz researchers has found that drought dramatically increases the severity of West Nile virus epidemics in the United States, although populations affected by large outbreaks acquire immunity that ...
Ecology
Feb 7, 2017
0
201
West Nile virus (or WNV) is a virus of the family Flaviviridae. Part of the Japanese encephalitis (JE) antigenic complex of viruses, it is found in both tropical and temperate regions. It mainly infects birds, but is known to infect humans, horses, dogs, cats, bats, chipmunks, skunks, squirrels, and domestic rabbits. The main route of human infection is through the bite of an infected mosquito.
Image reconstructions and cryoelectron microscopy reveal a 45–50 nm virion covered with a relatively smooth protein surface. This structure is similar to the dengue fever virus; both belong to the genus Flavivirus within the family Flaviviridae. The genetic material of WNV is a positive-sense, single strand of RNA, which is between 11,000 and 12,000 nucleotides long; these genes encode seven non-structural proteins and three structural proteins. The RNA strand is held within a nucleocapsid formed from 12 kDa protein blocks; the capsid is contained within a host-derived membrane altered by two viral glycoproteins.
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