Leeches Current Events

Leeches Current Events, Leeches News Articles.
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Everything you ever wanted to know about leech sex but were afraid to ask
New research, published in Environmental Toxicology and Chemistry, sheds light on the effects the synthetic estrogens commonly found in birth control pills have on leeches. (2020-07-21)

Switching senses
Many meat-eating animals have unique ways of hunting down a meal using their senses. To find a tasty treat, bats use echolocation, snakes rely on infrared vision, and owls take advantage of the concave feathers on their faces, the better to help them hear possible prey. Leeches have not just one but two distinct ways of detecting dinner and, according to new findings from biologists at the California Institute of Technology, their preferred method changes as they age. (2011-11-01)

Leeches reduce the pain of osteoarthritis
Leeches may yet return to favour as a treatment to relieve pain and inflammation, suggests a pilot study on osteoarthritis of the knee, reported in the Annals of the Rheumatic Diseases. (2001-09-16)

Leeches are DNA bloodhounds in the jungle
Copenhagen Zoo and University of Copenhagen have in collaboration developed a new and revolutionary, yet simple and cheap, method for tracking mammals in the rainforests of Southeast Asia. They collect leeches from tropical jungles, which have been sucking blood from mammals, and subsequently analyze the blood for mammal DNA. By using this method, the researchers can get an overview of the biodiversity of the mammals without having to find them. The groundbreaking results are to be published in the prestigious scientific journal Current Biology. (2012-04-23)

New UCF study examines leeches for role in major disease of sea turtles in Florida
University of Central Florida researchers are homing in on the cause of a major disease of sea turtles, with some of their latest findings implicating saltwater leeches as a possible factor. The results, published recently in the journal Diseases of Aquatic Organisms, present the first evidence of a significant association between leeches and the disease in sea turtles, according to the researchers. (2021-02-18)

Researchers take a bloody good look at the medicinal leech genome
An international team of researchers, led by Royal Ontario Museum (ROM) scientist Sebastian Kvist, have announced the completion and results of their work to sequence the genome of Hirudo medicinalis, a European leech, and one of the most prominently used medicinal species. The team focused their efforts on unveiling the diversity and abundance of anticoagulants (blood thinners) in the leech genome. The results will guide future medical use of leeches by providing insights into which proteins are secreted by the leech during feeding. (2020-06-18)

Antibiotic resistance in a leech's gut
Plastic surgery patients were getting infections with antibiotic resistant bacteria, and no one knew why. UConn microbiologists found the answer in a leech's gut. Their research, published today in mBio, provides proof that tiny levels of antibiotics found in the environment can encourage bacterial resistance. (2018-07-24)

Leeches ferry infection among newts
Parasite-carrying bloodsucking leeches may be delivering a one-two punch to newts, according to biologists, who say the discovery may provide clues to disease outbreaks in amphibians. (2007-01-31)

Bloodsucker discovered: First North American medicinal leech described in over 40 years
Freshwater wetlands from Georgia to New York are home to a previously unrecognized species of medicinal leech, according to scientists at the Smithsonian's National Museum of National History. The new species was first identified from specimens collected in southern Maryland less than 50 miles from Washington, D.C., prompting a search through marshes and museum collections that revealed that the leech has long occupied a range that stretches throughout the eastern United States. (2019-08-15)

Report from the leech's gut: Even trace amounts of antibiotics boost resistant bacteria
An international team of researchers recently took a deep dive into the microbiome of blood-sucking medicinal leeches and made a surprising observation: low levels of antibiotics in the animal's environment improved the survival of antibiotic-resistant bacteria in its gut. Those resistant bacteria, in turn, displaced healthy bacteria. The findings, published this week in mBio, could help explain why antibiotic resistant infections have been found in patients who undergo medicinal leech therapy. (2018-07-24)

Tracking endangered mammals with the leeches that feed on them
A broad survey conducted across southern Asia reinforces the idea that the mammal biodiversity of an area can be determined by looking at the DNA found in leeches' blood meals. The new study, led by researchers at the American Museum of Natural History, also shows for the first time that DNA found in leeches can be used to identify certain ground birds and, possibly, some bats. (2018-02-27)

Misclassified for centuries, medicinal leeches found to be 3 distinct species
Genetic research has revealed that commercially available medicinal leeches used around the world in biomedical research and postoperative care have been misclassified for centuries. Until now, the leeches were assumed to be the species Hirudo medicinalis, but new research reveals they are actually a closely related but genetically distinct species, Hirudo verbana. (2007-04-11)

The new T. rex: A leech with an affinity for noses
A new leech species with ferociously large teeth -- recently discovered in noses of children that swam in Peruvian rivers -- is providing insight into the evolutionary relationships among all the leeches that have an affinity for mucus membranes and orifices. Tyrannobdella rex was discovered in the remote Upper Amazon; its regular host remains unknown. (2010-04-14)

Novel device takes over where leeches leave off
A new device improves on the centuries-old medicinal use of leeches and avoids the unpleasantness of having a blood-sucking parasite attached to your body. (2001-12-12)

Caltech and UCSD scientists establish leech as model for study of reproductive behavior
Researchers at Caltech and the University of California, San Diego, have discovered that injecting a simple hormone into leeches creates a novel way to study how hormones and the nervous system work together to produce species-specific reproductive behavior. A paper describing the work appears in the March 11 online edition of the journal Current Biology. (2010-03-16)

Leeches provide source for cardiovascular drugs
The leech has recently confirmed its biomedical interest for scientists by showing that it contains an extensive list of new potential molecules that may become useful tools in the treatment of cardiovascular diseases. The details of this research appear in the October issue of Molecular and Cellular Proteomics, an American Society for Biochemistry and Molecular Biology journal. (2005-10-24)

Reducing the adverse impact of water loss in cells
A University of Houston College of Medicine researcher has found how a protein inside the body reduces the adverse effects of hypertonicity, an imbalance of water and solutes inside cells, which leads to cell death. (2020-08-04)

Inspired by a soft body of a leech -- a wall-climbing robot
A research team led by Associate Professor Tomoaki Mashimo at Toyohashi University of Technology has successfully developed a leech-shaped robot, 'LEeCH,' which can climb vertical walls. LEeCH is capable of elongating and bending its body without any constraints; just like a leech. Thanks to its flexible body structure and the suction cups, the robot has successfully climbed a vertical wall and even reached to the other side of the wall. (2019-05-10)

Survey identifies sea turtle 'hitchhikers'
A recent survey documented the crustaceans, mollusks, algae and other marine organisms that make a home on the bodies Olive Ridley and green sea turtles living in the Pacific. (2011-11-08)

Gimme shelter: Seven new leech species call freshwater mussels home
The frequent presence of leeches with a hidden lifestyle in the mantle cavity of freshwater mussels has been recorded since the second half of the 19th century. Yet this was, until now, regarded as an accidental phenomenon. Recent research not only reveals seven mussel-associated leech species new to science, but also shows that their association evolved over millions of years. (2019-11-11)

Molecular biologists prune branches from the animal family tree
HHMI researchers and their colleagues are using genetic studies to overturn long-held beliefs about the evolution of the animal kingdom. The researchers propose a new family tree with only three branches, which they say reflects the three primary evolutionary lines from which animals evolved. (1999-06-24)

Native leech preys on invasive slug?
Citizen science has revealed the spread of the invasive giant slug Limax maximus and its potential native predator in Japan, providing new insights into predator-prey dynamics between introduced prey and native predators. (2017-07-20)

Crayfish species proves to be the ultimate survivor
Red swamp crayfish, known as one of the most successful invaders on earth, is able to feed off the land as well as getting food from its usual source in the water. (2012-08-03)

Evolution peaks on tropical mountain
Tropical mountains have an exceptionally high biodiversity. This is also the case for Mount Kinabalu in Sabah, Malaysian Borneo. During an expedition, organized by Naturalis Biodiversity Center and Sabah Parks, experts investigated the local fauna, flora, and fungi. They discovered that most of the unique species that occur in the area had evolved later than the age of the mountain itself, and that some had evolved from immigrant ancestors, whereas others evolved from local ancestors. These findings are published in Nature. (2015-08-12)

What do leeches, limpets and worms have in common? Now, a sequenced genome
A team of biologists report in this week's Nature the genome sequences of three organisms that represent more than one-quarter of marine species, including clams, octopuses and the segmented worms, including earthworms. The leech, limpet and polychaete worm all descended from animals that split off more than 500 million years ago and have evolved since, most still utilizing an old larval form, the trochophore - a tiny ciliated free-swimming phase that looks nothing like the adult. (2012-12-19)

Contrary to popular belief, investment banks do add value to M&As, new study shows
Investment banks add value to mergers and acquisitions and, in fact, produce important information for the M&A advisory process, according to new research by Matthew Cain, assistant professor of finance at the University of Notre Dame's Mendoza College of Business. (2012-05-21)

Sperm trading can resolve hermaphrodite mating conflicts
By directly manipulating mating performance in a tropical sea slug, Chelidonura hirundinina, researchers of the University of Tübingen have now shed light on the bizarre reproductive conflicts encountered by hermaphroditic animals. In some hermaphroditic species, such as C. hirundinina, mating partners may insist on copulating as a (2005-10-10)

Role reversal as humans suck life out of leeches
Global warming may be to blame for the gradual extinction of cold-loving species, and the European land leech in particular, according to a study which will be published in the December issue of Springer's journal Naturwissenschaften. The findings show that human-induced temperature increases over a 40-year period in the Graz region of Austria may have led to the near extinction of the local land leech Xerobdella lecomtei. (2007-09-05)

Once upon a time, scales were displayed in parlors, not hidden in bathrooms
Stepping onto a scale after a calorie-filled holiday season isn't an activity many 21st-century Americans relish. But in the late 19th century, scales were all the rage at festive gatherings -- the 1800s' answer to Guitar Hero. (2008-12-11)

A new fossil species found in Spain
In the '80s, Spanish researchers found the first fossils of Cloudina in Spain, a small fossil of tubular appearance and one of the first animals that developed an external skeleton between 550 and 543 million years ago. Now palaeontologists from the University of Extremadura have discovered a new species, Cloudina carinata, the fossil of which has preserved its 3-D shape. (2010-03-25)

Dodging elephants, scorpions, mudslides...UF researcher tracks tigers
Tiger experts are hailing a new study of the tiger population in Malaysia as something of a landmark in research and conservation of the animals. (2003-07-10)

Medicinal Leech May Offer Clues To Neural Regeneration
Purdue University researchers have found that nitric oxide synthase, or NOS, is activated when axons are damaged in the medicinal leech, an invertebrate known for its ability to regenerate its neural connections. The group is now conducting followup studies to see what role NOS may play in neural regeneration (1996-11-21)

Scientists use microRNAs to track evolutionary history for first time
A team of scientists from Yale University and Dartmouth College has used microRNA data to investigate the evolutionary relationships of annelids, which include earthworms, leeches and bristle worms, to show that this large animal group evolved as a single, unique evolutionary branch. Their work represents the first time that microRNAs have been used to study the evolutionary relationships between organisms. (2009-09-09)

Insect 'soup' serving up rapid biodiversity monitoring
Griffith University researchers have taken part in an international study which has discovered a fast but accurate means of identifying changes to the biodiversity of a region. And the secret lies in crushed up insect (2013-08-06)

400-million-year-old gigantic extinct monster worm discovered in Canadian museum
A previously undiscovered species of an extinct primordial giant worm with terrifying snapping jaws has been identified by an international team of scientists. (2017-02-21)

BioTorrents: An OA file sharing service and more
The following papers are featured in the latest issue of PLoS ONE: BioTorrents: A file sharing service; Evolutionary origins of mucosal leech infestations; and Differential brain activation to angry faces by elite warfighters. (2010-04-14)

Worm genomes reveal a link between ourselves and our distant relatives
Researchers from the Marine Genomics Unit at OIST, in collaboration with Okayama University, have decoded two worm genomes and found that they have several genetic similarities with the vertebrates. (2017-12-04)

Bacteria stop sheep dip poisoning fish and bees
Bacteria can be used to break down used sheep dip, preventing bees and fish from dying because of soil and river contamination, scientists heard today at the Society for General Microbiology's autumn meeting being held this week at Trinity College, Dublin. (2008-09-09)

Annals of Internal Medicine, tip sheet, November 4, 2003
Highlights of the November 4 edition of the Annals of Internal Medicine include vulnerable older adults needing special geriatric care to remain independent, leeches relieving pain in arthritic knees, and a study that looks at three ways to measure blood pressure for insight into mortality. (2003-11-03)

'Insect soup' holds DNA key for monitoring biodiversity
Scientists at the University of East Anglia have shown that sequencing the DNA of crushed up creepy crawlies can accelerate the monitoring and cataloging of biodiversity around the world. Research published today shows that a process known as (2013-08-05)

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