Navigation Links
Scientists find city rats are loyal to their 'hoods
Date:5/26/2009

In the rat race of life, one thing is certain: there's no place like home. Now, a study just released in Molecular Ecology finds the same is true for rats. Although inner city rodents appear to roam freely, most form distinct neighborhoods where they spend the majority of their lives.

Like any major city, Baltimore has many lively neighborhoods each with its own personality. But scientists from the Johns Hopkins Bloomberg School of Public Health say humans aren't the only Baltimoreans loyal to their 'hoods. The researchers found that rats typically stay close to home, rarely venturing more than a city block. In the face of danger, however, some rodents can travel as far as 7 miles to repopulate abandoned areas.

Wild Norway rats also called wharf rats, sewer rats or brown rats can weigh nearly 2 pounds and transmit a variety of diseases to humans. Despite expensive eradication efforts, the number of rats in Baltimore has remained unchanged over the past 50 years. To understand why, researchers trapped nearly 300 rats from 11 residential areas of Baltimore and conducted genetic studies to see how the rats were related.

The scientists found that East Baltimore rats are separated from their unrelated West-side counterparts by a large waterway known as the Jones Falls. Within these hemispheres, rat families form smaller communities of about 11 city blocks. Each community is further divided into neighborhoods that span little more than the length of an average alley. And to a city rat, this is home sweet home.

The findings suggest that while rats rarely migrate, neighborhood eradication efforts may backfire by encouraging the rodents to repopulate other areas and further spread disease. When you smell a rat, the researchers say, the best solution may be to tackle the problem on a much larger scale perhaps by targeting entire families at once. Rat race won.


'/>"/>

Contact: F. Galligan
fgalligan@wiley.com
Wiley-Blackwell
Source:Eurekalert

Page: 1

Related medicine news :

1. New prion protein discovered by Canadian scientists may offer insight into mad cow disease
2. Scientists Probe Sepsis Deadly Secrets
3. Scientists puzzled by severe allergic reaction to cancer drug in the middle Southern US
4. Scientists Develop Natural Protection for Stored Foods
5. Scientists detect presence of marburg virus in african fruit bats
6. Scientists Spot Brains Free Will Center
7. Scientists ID Likely Culprit in Popcorn Lung
8. Scientists explain how insulin secreting cells maintain their glucose sensitivity
9. Scripps Research scientists shed new light on how antibodies fight HIV
10. Scientists, physicians present latest findings in personalized cancer treatment and prevention
11. Scientists demonstate link between genetic variant and effectiveness of smoking cessation meds
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/11/2014)... TX (PRWEB) July 11, 2014 Plasma ... of blood products industry. Although the closure of 16 ... major disruption to domestic blood products market, the total ... 2.8% year on year and total lot release volume ... due to stock consumption, insufficient utilization of new plasma ...
(Date:7/11/2014)... Even the hot Texas sun won’t keep ... . The school had previously invested in a ... from APCPLAY, but recently asked for an innovative solution to ... Godley Elementary School chose a Rectangular Shade from APCPLAY as ... on their playground. The shade measures 24’W x 34’H ...
(Date:7/11/2014)... Based in Pearland, Prime Urgent Care has ... County and surrounding counties. Recently, it improved access to ... from Northbound Highway 288 and Feeder Road. , Prime ... get low-cost urgent care of high quality. Although low-cost ... that can match the quality service level of the ...
(Date:7/10/2014)... July 10, 2014 Fatigue, lack ... an increasing number of accidents in the workplace, ... Reboot. The articles highlight safety issues that contribute ... million accidents occur on the job annually, according ... continue to explore "preventable workplace accidents." , Safety ...
(Date:7/10/2014)... July 11, 2014 According to ... Market by Platforms (Land, Airborne, Naval), Application (Software ... & by Geography (North America, Asia-Pacific, Europe, the ... (2014-2019)", published by MarketsandMarkets, the market is estimated ... expected to register a CAGR of 5.56% to ...
Breaking Medicine News(10 mins):Health News:Chinese Blood Product Industry Report 2014-2017 Focuses Plasma Volume & Stations Says A New Research Available at ChinaMarketResearchReports.com 2Health News:Chinese Blood Product Industry Report 2014-2017 Focuses Plasma Volume & Stations Says A New Research Available at ChinaMarketResearchReports.com 3Health News:Chinese Blood Product Industry Report 2014-2017 Focuses Plasma Volume & Stations Says A New Research Available at ChinaMarketResearchReports.com 4Health News:Cool Fun Under the Texas Sun: Godley Elementary School Purchases Shade Structure from APCPLAY© 2Health News:Prime Urgent Care Announces New Access to the Clinic, Available from Northbound Highway 288 2Health News:Safety Reboot Magazine Focuses on: Why Extended Hours is Dangerous in the Workplace; Why Custodial Work Can be Dangerous; and Improving Safety for Roofers 2Health News:Safety Reboot Magazine Focuses on: Why Extended Hours is Dangerous in the Workplace; Why Custodial Work Can be Dangerous; and Improving Safety for Roofers 3Health News:Portable Communication Systems Market Projected to Reach $39.52 Billion by 2019 - New Report by MarketsandMarkets 2Health News:Portable Communication Systems Market Projected to Reach $39.52 Billion by 2019 - New Report by MarketsandMarkets 3Health News:Portable Communication Systems Market Projected to Reach $39.52 Billion by 2019 - New Report by MarketsandMarkets 4
... artemisinin yield from the herb Artemisia annua by specifying ... ,The two developments could bring down the ... Organization to treat malaria. Over 100 countries use it ... the drug chloroquine. ,A study, published in ...
... Legionnaires’ disease. // ,Jack Russell was admitted to ... of the bacteria Legionella pnuemophila, which causes the disease. ... It takes its name from the first known outbreak, which ... the Pennsylvania Department of the American Legion in 1976. ...
... of Pennsylvania School of Veterinary Medicine have derived uniparental ... eggs or two// sperm - and, for the first ... with healthy cells in adult mice. Their ... in an adult organ and could provide a less ...
... genes associated with the risk of developing Type II ... at risk a step closer. ,Researchers have ... that correspond to a risk of developing this life ... nearly 400,000 mutations in nearly 6,500 people. ...
... composer is just one of many blind people around the ... , Scientists working for the Doheny Eye ... a previous invention released in 2002; a prototype artificial retina. ... its successor, the Argus II Retinal Prosthesis System. ...
... come out with a device which is likely// to ... control issues. ,They have named this ... circuit in spinal cord which is responsible for the ... sustain continence. This device is extremely useful in patients ...
Cached Medicine News:Health News:Scientists Boost Production of Cheap Malaria Drugs 2Health News:Convict Felled by Legionnaires 2Health News:'single–parent' stem cells to replace adult mice organ 2Health News:'single–parent' stem cells to replace adult mice organ 3Health News:Genetic Test for Type II Diabetes Moves Closer 2Health News:Genetic Test for Type II Diabetes Moves Closer 3Health News:Bionic Eye may Restore Sight to the Blind 2Health News:Bladder Pacemaker For Incontinence 2Health News:Bladder Pacemaker For Incontinence 3
(Date:1/15/2014)... the leading health care supply chain expertise, analytics and ... national contracts that expand its portfolio to provide hospital ... These include manufacturer product and service agreements, as well ... IT consulting support. New Novation agreements ...
(Date:1/15/2014)... Jan. 15, 2014 Massachusetts General Hospital (MGH), ... AMGN ) announced today that they have launched ... new therapeutic targets and develop novel therapies for ... affects millions worldwide. The MGH-Broad-Amgen collaboration brings together ...
(Date:1/15/2014)... 15, 2014  Humberto C. Antunes,  Galderma  worldwide CEO, will ... Journal of Drugs in Dermatology (JDD) at ... The event is January 17-20, 2014, at the Omni Orlando Resort ... The ODAC is a distinguished event that ...
Breaking Medicine Technology:New Novation Information Technology VAR Contracts Offer Significant Savings to Hospitals 2Mass. General, Broad Institute and Amgen Will Work to Discover New Drugs for Inflammatory Bowel Disease 2Mass. General, Broad Institute and Amgen Will Work to Discover New Drugs for Inflammatory Bowel Disease 3Mass. General, Broad Institute and Amgen Will Work to Discover New Drugs for Inflammatory Bowel Disease 4Galderma's global leader honored with a "Lifetime in Dermatology Achievement Award" by Journal of Drugs in Dermatology 2Galderma's global leader honored with a "Lifetime in Dermatology Achievement Award" by Journal of Drugs in Dermatology 3Galderma's global leader honored with a "Lifetime in Dermatology Achievement Award" by Journal of Drugs in Dermatology 4
... is a national reference laboratory and a ... development. ARUP offers an extensive test menu ... in clinical and anatomic pathology. Owned by ... include more than half of the nation's ...
... national reference laboratory and a worldwide leader ... offers an extensive test menu of highly ... and anatomic pathology. Owned by the University ... than half of the nation's university teaching ...
... reference laboratory and a worldwide leader in ... an extensive test menu of highly complex ... anatomic pathology. Owned by the University of ... half of the nation's university teaching hospitals ...
... ARUP Laboratories is a national reference laboratory ... research and development. ARUP offers an extensive ... medical tests in clinical and anatomic pathology. ... Laboratories' clients include more than half of ...
Medicine Products: