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Latest Parasitology Stories

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2009-07-15 12:45:00

Information could lead to new treatments for schistosomiasisTwo international research teams have determined the complete genetic sequences of two species of parasitic flatworms that cause schistosomiasis, a debilitating condition also known as snail fever. Schistosoma mansoni and Schistosoma japonicum are the first sequenced genomes of any organism in the large group called Lophotrochozoa, which includes other free-living and parasitic flatworms as well as segmented roundworms, such as the...

2009-07-07 11:27:35

What's so great about sex? From an evolutionary perspective, the answer is not as obvious as one might think. An article published in the July issue of the American Naturalist suggests that sex may have evolved in part as a defense against parasites. Despite its central role in biology, sex is a bit of an evolutionary mystery. Reproducing without sex"”like microbes, some plants and even a few reptiles"”would seem like a better way to go. Every individual in an asexual...

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2009-07-01 16:50:24

The World Health Organization said Wednesday that a drug commonly used to treat pets with parasites may offer hope in eradicating river blindness. Moxidectin, prescribed for dogs, cats, cattle and horses to treat parasites, shows potential to destroy the worms that cause river blindness, an infectious disease that threatens 100 million people, the U.N. agency said.  The condition, whose formal name is onchocerciasis, comes with debilitating symptoms such as loss of sight, severe rashes...

2009-06-16 20:39:03

A Chicago man got an unexpected side dish with his sushi at a restaurant in August 2006 -- a 9-foot tapeworm, researchers say. Anthony Franz is one of a growing number of people infested with a salmon tapeworm, the journal The Emerging Infectious Diseases reports. Dr. Felipe C. Cabello, professor of microbiology and immunology at New York Medical College in Valhalla, indicated the worm is not particularly dangerous. He said, usually, with this particular worm, it produces discomfort, some...

2009-06-15 16:00:00

The Companion Animal Parasite Council heads West, driving home the importance of year-round parasite prevention to protect pets and people BEL AIR, Md., June 15 /PRNewswire/ -- Temperate climates, high pet populations and a regional love of the outdoors make the Western United States an ideal location for the upcoming second annual Companion Animal Parasite Council (CAPC) Education Road Show, June 27 - July 11. During eight stops in four states - Colorado, California, Oregon and Washington...

2009-06-04 13:56:12

Reed warblers learn from neighbors to defend their nests against parasitism from cuckoosReed warblers live with the threat that a cuckoo bird will infiltrate their nest, remove one of their eggs, and replace it with the cuckoo's own. This 'parasitism' enables the cuckoo to have its young raised by unsuspecting reed warblers.However, scientists at the University of Cambridge have discovered that reed warblers will attack or 'mob' cuckoos on their territory and so prevent the parasites from...

2009-06-03 12:27:36

U.S. scientists are warning of the possible consequences of coextinctions -- the loss of a species as well as the parasites or mutualists that depend on it. North Carolina State University biologist Rob Dunn and colleagues said mathematical models suggest coextinctions are very common, yet there have been few reported cases of coextinction in scientific literature. Since the diversity of parasitic or affiliated species -- which may include viruses, ticks, lice and bacteria "¦ but also...

2009-05-29 14:38:00

--Hidden Enemies Lurk Among Us, Wednesday, July 1, at 9 PM (ET/PT)-- SILVER SPRING, Md., May 29 /PRNewswire/ -- Not all monsters are big. In fact, some of the most deadly organisms in the world are invisible to the human eye. Using size to their advantage, microscopic parasites quietly invade their hosts without fear of inhibition or detection. Once inside, these creatures wait in concealment for months, or sometimes years, before striking--all the while, silently feeding off their victims....

2009-05-28 10:59:00

That's one conclusion from a new study that looked at how virulence evolves in parasites. The research examined whether parasites evolve to be more or less aggressive depending on whether they are closely connected to their hosts or scattered among more isolated clusters of hosts.The research was led by Geoff Wild, an NSERC-funded mathematician at the University of Western Ontario, with colleagues from the University of Edinburgh. Their paper will be published on Nature's Web site on May...

2009-05-22 13:58:00

LITTLE ROCK, Ark., May 22 /PRNewswire/ --Get ready for mosquito season and protect your freedom to enjoy the outdoors with a highly effective and affordable way to eliminate mosquitoes and other pesky bugs. Mosquito 86(TM) Pest Eradication System is a professional-grade mosquito elimination system that operates as an attachment to a common hand-held yard or leaf blower to turn it into an extraordinarily effective mosquito killing machine. (Logo:...


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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