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Latest Parasitism Stories

2011-10-25 20:06:23

Researchers at the University of South Florida (USF) College of Public College Health have shown for the first time in a rodent model that the earliest form of malaria parasites can lay dormant in red blood cells and “wake up,” or recover, following treatment with the antimalarial drug artesunate. The study, which appears today in the online journal PLoS ONE, suggests that this early-stage dormancy phenomenon contributes to the failure of artesunate alone, or even combined with...

A Hitchhiker's Guide To The Galápagos
2011-10-03 04:48:30

Co-evolution of Galápagos mockingbirds and their parasites Along with the famous finches the Galápagos mockingbirds had a great influence on Charles Darwin's theory of evolution. Now, 176 years later, three of the four mockingbird species are among the rarest birds in the world. New research published in BioMed Central's open access journal BMC Evolutionary Biology untangles the evolutionary relationships between Galápagos mockingbirds and provides...

2011-09-21 19:08:10

Toxoplasma gondii parasites can invade your bloodstream, break into your brain and prompt behavioral changes from recklessness to neuroticism. These highly contagious protozoa infect more than half the world's population, and most people's immune systems never purge the intruders. Cornell researchers recently discovered how T. gondii evades our defenses by hacking immune cells, making it the first known parasite to control its host's immune system. Immunologists from the College of...

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2011-09-14 18:55:27

How diseases are transmitted among humans, other animals, the environment is focus New research aimed at controlling the transmission of diseases among humans, other animals and the environment is being made possible by grants from a collaboration among U.S. and U.K. funding agencies. By improving our understanding of the factors affecting disease transmission, the projects will help produce models to predict and control outbreaks. Funding is from the U.S. National Science Foundation...

2011-09-09 13:07:29

Important implications for global pest-control The diamondback moth, Plutella xylostella, is one of the world's most destructive crop pests. It has developed resistance to many chemical and biological pesticides, and the estimated global cost of controlling this insect is approximately US$1billion annually. In a new article published in the open access journal BMC Genomics, researchers from Australia have identified the genes expressed when the diamondback moth is attacked by a...

2011-09-01 11:58:38

An investigation into the mysterious inner workings of the malaria parasite has revealed that it survives and proliferates in the human bloodstream thanks in part to a single, crucial chemical that the parasite produces internally. According to scientists at the University of California, San Francisco (UCSF) and Stanford Medical School, reporting today in the journal PLoS Biology, this insight immediately provides a powerful new tool for discovering and designing drugs to treat malaria,...

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2011-08-19 15:56:23

When a male rat senses the presence of a fetching female rat, a certain region of his brain lights up with neural activity, in anticipation of romance. Now Stanford University researchers have discovered that in male rats infected with the parasite Toxoplasma, the same region responds just as strongly to the odor of cat urine. Is it time to dim the lights and cue the Rachmaninoff for some cross-species canoodling? "Well, we see activity in the pathway that normally controls how male...

2011-08-18 14:41:32

A press release from PLoS ONE New research shows how a brain parasite can manipulate rodent fear responses for the parasite's own benefit. The study, authored by Patrick House and Dr. Robert Sapolsky of Stanford University and released this week in PloS One, addressed how the single-celled parasite Toxoplasma gondii makes infected rodents more likely to spend time near cat odors. The study finds Toxoplasma-infected male rats have altered activation in brain regions involved in fear and...

2011-08-16 13:32:00

BEL AIR, Md., Aug. 16, 2011 /PRNewswire/ -- Lyme disease and heartworm are endemic to the Upper Midwest, which is where the nonprofit Companion Animal Parasite Council (CAPC) is headed for its fourth annual Parasite Education Road Show, July 20 - August 3. (Photo: http://photos.prnewswire.com/prnh/20110816/CG53219) During stops in 13 cities - Omaha, Neb.; Des Moines; Minneapolis; Chicago; Madison, Wis.; Milwaukee; Grand Rapids, Mich.; Lansing, Mich.; Toledo; Pittsburgh; Columbus,...

2011-08-15 22:21:01

A recent study suggests that parasites in fish, including threatened species of Oregon coho salmon, may have more profound impacts on fish health than has been assumed, and could be one of the key mechanisms by which habitat and land use changes cause salmon mortality. It's not just the presence or absence of parasites that is important, the research found, but their numbers that can build up over years or decades and ultimately cause major impacts. The study will be published soon in the...


Latest Parasitism Reference Libraries

Lancet Liver Fluke, Dicrocoelium dendriticum
2014-01-12 00:00:00

The lancet liver fluke (Dicrocoelium dendriticum) is a parasitic worm that is classified within the Platyhelminthes phylum. It is thought to be native to over thirty countries including Switzerland, Spain, Germany, Iran, China, Vietnam, Japan, Ghana, and Nigeria, among many other areas. It is also found in South and North America and in Australia. It is typically found in cattle or other grazing species, so it is thought to prefer a habitat that supports these species. It is similar in...

Profilicollis
2014-01-05 00:00:00

Profilicollis is a genus of acanthocephalan parasites that are found in crustaceans and shorebirds. Profilicollis parasites use decapod crustaceans as intermediate hosts and species of shorebirds as definitive hosts. The parasite first develops in mole crabs of North and South America. After it infects a mole crab, it becomes dormant until the crab is eaten by a suitable bird, such as a Surf scoter or Herring Gull. Once the parasite has passed through the stomach of the bird, it develops...

Moniliformis moniliformis
2014-01-05 00:00:00

Moniliformis moniliformis is a species of acanthocephalan parasite that can infect humans, though it rarely does. Human infections have been reported in the United States, Iran, Iraq, and Nigeria. It has been found in rats all over the world, and usually is found in cats, dogs and, in Poland, red foxes. Intermediate hosts are usually beetles and cockroaches. This parasite, like other acanthocephalans, does not have a digestive tract. It absorbs nutrients through the tegument (external...

Giant Thorny-headed Worm, Macracanthorhynchus hirudinaceus
2014-01-05 00:00:00

The Giant Thorny-headed Worm (Macracanthorhynchus hirudinaceus) is a species of acanthocephalan parasite found in the intestines of pigs and other hoofed animals, and can occasionally appear in humans and dogs. The eggs of this parasite are usually found in scarabaeoid or hydrophilid beetles and other similar insects. Worms of this species range in size from less than four-hundredths of an inch to over 15 inches. It causes enteritis, gastritis or peritonitis in affected hosts. While it...

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Word of the Day
bibliopole
  • A bookseller; now, especially, a dealer in rare and curious books.
This word comes from a Greek phrase meaning 'book seller.'
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