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Latest Parasitology Stories

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2009-03-06 13:51:22

The means by which most deadly malaria parasites are detected and killed by the mosquitoes that carry them is revealed for the first time in research published yesterday (March 5) in Science Express. The discovery could help researchers find a way to block transmission of the disease from mosquitoes to humans. Mosquitoes become infected with malaria when they feed on the blood of an infected person. Young malaria parasites then grow and develop inside the mosquito for two weeks. New human...

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2009-02-15 15:05:00

Temperature is an important factor in the spread of malaria and other mosquito-borne diseases, but researchers who look at average monthly or annual temperatures are not seeing the whole picture. Global climate change will affect daily temperature variations, which can have a more pronounced effect on parasite development, according to a Penn State entomologist. "We need higher resolution environmental and biological data to understand how climate change will affect the spread of the malaria...

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2009-01-08 15:40:00

New research from Cornell University finds that Aedes aegypti mosquitoes, the kind that spread diseases such as dengue and yellow fever, change their wing vibrations as a mating symbol.Ronald R. Hoy, who authored a report about the study, said the discovery could pave the way to better methods of controlling mosquitoes.  Indeed, one such way to control mosquitoes is by releasing sterile males to prevent reproduction.  By monitoring their mating signals, researchers would have a way...

2008-09-15 15:00:11

British and Scottish scientists say they've come up with a better way to separate parasites from their host cells, allowing detailed studies of their proteins. The researchers, led by Toni Aebischer of the Institute of Immunology and Infection Research at the University of Edinburgh, said their new method will allow a thorough analysis of proteins involved in parasitic organisms. That, in turn, might be tremendously useful for drug or vaccine development, Aebischer said. Until now, the...

2008-07-04 03:00:02

CHICAGO - Do you ever feel like a mosquito magnet? About 10 percent of the population actually qualifies, according to entomologist Jerry Butler, a professor emeritus at the University of Florida. These are the people who get covered in bites while their porch partners or biking buddies are left unscathed. Many of them get exaggerated skin reactions to the bugs - hard red welts or hives that can itch for days. Children are more susceptible to these reactions, which can cause...

2008-07-03 15:00:00

By LINDSEY TANNER, THE ASSOCIATED PRESS CHICAGO First came the floods now the mosquitoes. An explosion of pesky insects are pestering clean-up crews and just about anyone venturing outside in the waterlogged Midwest. In some parts of Iowa, there are 20 times the normal number and in Chicago, up to five times more than usual. The good news is these are mostly floodwater mosquitoes, not the kind that usually carry West Nile virus and other diseases. But they are very hungry, and...

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2008-07-02 18:30:00

Due to the recent flooding in parts of the Midwest, explosions of pesky mosquitoes are pestering clean-up crews and just about anyone venturing outside. Areas of Iowa have reported 20 times the normal number, and in Chicago up to five times more than usual. Fortunately, they're not the kind of mosquitoes that carry West Nile virus and other diseases. But they are very hungry, and sometimes attack in swarms with a stinging bite. Heavy rain followed by high temperatures creates ideal conditions...

2008-06-19 00:00:30

On Thursday, Allegheny County Health Department crews will fan out across the county to treat stormwater catch basins with pesticide to stop mosquito larvae from growing into biting adults. The treatments are meant to stem the spread of mosquito-borne diseases, such as West Nile virus, which has not been detected in Allegheny County this year. Health Department staff will disperse nontoxic pesticide into 22,000 catch basins where standing water creates an ideal home for mosquito larvae....

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2008-05-14 09:05:00

It's a paradox that has confounded evolutionary biologists since Charles Darwin published On the Origin of Species in 1859: Since parasites depend on their hosts for survival, why do they harm them?A new University of Georgia and Emory University study of monarch butterflies and the microscopic parasites that hitch a ride on them finds that the parasites strike a middle ground between the benefits gained by reproducing rapidly and the costs to their hosts. The study, published in the early...

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2006-07-14 07:15:00

Scientists have discovered that parasites are surprisingly important in food webs and their findings appear in a report published this week in the Early Edition of the on-line version of the Proceedings of the National Academy of Sciences. Scientists with the University of California, Santa Barbara, the U.S. Geological Survey, and Princeton University contributed. The report describes a study performed in Santa Barbara County at the Carpinteria Salt Marsh. Carpinteria Salt Marsh Reserve is...


Latest Parasitology Reference Libraries

Pork Tapeworm, Taenia solium
2014-01-12 00:00:00

The pork tapeworm (Taenia solium), also known simply as a tapeworm, is a species of parasitic worm that is classified within the Platyhelminthes phylum. This species infects pigs and humans in many areas of the world including Africa, Southern Europe, Asia, South America, and some areas of North America. This species can cause cysticercosis in its larval stage, which is one of the major causes of seizures in humans. The pork tapeworm can reach an average body length between 2 to 3 meters, but...

Paragonimus westermani
2014-01-12 00:00:00

Paragonimus westermani is a species of fluke, or flatworm that is classified within the Platyhelminthes phylum. This species is abundant in South America and Asia and affects the lungs of humans and other hosts. It was first discovered in 1878 in Europe after two Bengal tigers died. In 1879, Ringer found this species in the lungs of a human. Manson and Erwin von Baelz identified the sputum and eggs separately in 1880, after which Manson asserted that a snail was most likely the worm's...

Echinococcus multilocularis
2014-01-12 00:00:00

Echinococcus multilocularis is a species of tapeworm that is classified within the Platyhelminthes phylum. It is one of a few worms that cause echinococcosis, a disease that affects many canid species including wolves, coyotes, foxes, jackals, domesticated dogs. Humans can also contract this disease. Adult members of this species can reach an average length of .2 inches, and like other species of tapeworm, its body is segmented by three proglottids. Its head, or scolex, is equipped with...

Trichinella spiralis
2014-01-12 00:00:00

Trichinella spiralis, sometimes known as the pork worm, is a parasite within the Nematoda class. It can be found in pigs, rats, humans, and bears. This worm causes trichinosis in humans, most often from consuming undercooked pork. This species is the smallest within its class, reaching an average body length of .16 centimeters. Females are twice as large as males, displaying a sexual dimorphism. The reproductive organs of females are unique to the species in that the front end holds developed...

Guinea Worm, Dracunculus medinensis
2014-01-12 00:00:00

The Guinea worm (Dracunculus medinensis) is a species of roundworm with the Nematoda phylum. This species is once ranged throughout Asia and Africa, including the west coasts of Africa in Guinea. Although it is not present in this range anymore, the species retains its common name. It was identified in this area by Carl Linnaeus, who discovered the parasite in many merchants along the coast. Its scientific name was also given due to a large population in one area, called Medina. Dracunculus...

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Word of the Day
penuche
  • A fudgelike confection of brown sugar, cream or milk, and chopped nuts.
'Penuche' is a variant of 'panocha,' a coarse grade of sugar made in Mexico. 'Panocha' probably comes from the Spanish 'panoja, panocha,' ear of grain.
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