Navigation Links
City rats loyal to their 'hoods, scientists discover
Date:5/27/2009

In the rat race of life, one thing is certain: there's no place like home.

Now, a study published this week in the journal Molecular Ecology finds the same is as true for rats as for humans.

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, Md., has many lively neighborhoods--each with its own personality. But scientists from the Johns Hopkins University Bloomberg School of Public Health say humans aren't the only Baltimoreans loyal to their 'hoods.

Rats typically stay close to home, rarely venturing more than a city block away. In the face of danger, however, some rodents can travel as far as seven miles to repopulate abandoned areas.

An understanding of how rats in urban areas are connected provides information about which populations may spread disease, according to Sam Scheiner, program director in the National Science Foundation (NSF)'s Division of Environmental Biology, which funded the research through the joint NSF-National Institutes of Health Ecology of Infectious Diseases program.

Baltimore's port was a once major delivery point for grain, likely how Norway rats were first introduced to the city. Norway rats, also called wharf rats, sewer rats or brown rats, can weigh nearly two 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, says scientist Greg Glass of Johns Hopkins, who co-authored the Molecular Ecology paper with other researchers from Johns Hopkins and the Yale University School of Medicine.

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
'/>"/>

Contact: Cheryl Dybas
cdybas@nsf.gov
703-292-7734
National Science Foundation
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Opposites attract -- how genetics influences humans to choose their mates
2. The importance of being helpful -- Cooperative cichlids boost their own reproductive success
3. Athletes with asthma need more help from their team trainers
4. Our brains make their own marijuana: Were all pot heads deep inside
5. Food security for leaf-cutting ants: Workers and their fungus garden reject endophyte invaders
6. Genes that make bacteria make up their minds
7. Children who are dissatisfied with their appearance often have problems with their peer group
8. Female mammals follow their noses to the right mates
9. Female birds jam their mates flirtatious songs
10. Caltech and UCSD researchers shed light on how proteins find their shapes
11. Why dont more animals change their sex?
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
City rats loyal to their 'hoods, scientists discover
(Date:12/11/2014)... --Research and Markets , ... ) has announced the addition of the ... to their offering. One major ... technology. With continuous advances in technology, it is ... standard that meets the needs and expectations of ...
(Date:12/10/2014)... , Dec. 9, 2014  Valencell, a leader in ... seeing a staggering demand from its licensees for highly ... revealed, is not solely coming from fitness and health ... "A wearable is only as useful as ... is the ultimate driver in long-term mass consumer adoption ...
(Date:12/5/2014)... , Dec. 4, 2014 Increased emphasis ... investments in new testing and inspection technologies. The ... rise to a range of innovative test solutions. ... of Generation Y, which is generally more inclined ... result, product development strategies of test equipment vendors ...
Breaking Biology News(10 mins):Biometrics Market in the APAC Region 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2Wearable Technology Products Demand Highly Accurate Biometric Technology 2Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 2Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 3Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 4
... PITTSBURGH Nov. 9, 2007 Researchers at Childrens Hospital ... trial currently underway to study the effectiveness of oral insulin ... in people at risk for the disease. The researchers ... prevent or delay the onset of type 1 diabetes in ...
... will convene at the Institute of Ecosystem Studies ... future of biofuel production in the United States. ... biofuel experts, including Drs. David Pimentel (Cornell University), ... State)., Corn and soy-based ethanol have been touted ...
... barbecue knows that hot dogs are inexplicably packaged in different ... 10 hot dog buns. Put in ecological terms, this means ... are worthless without hot dogs to fill them. ... phosphorus or nitrogen limits plant production in most ecosystems. According ...
Cached Biology News:Children's Hospital studying drug with the potential to prevent/delay onset of type 1 diabetes 2Can plant-based ethanol save us from our fossil fuel addiction? 2At the root of nutrient limitation, ecosystems are not as different as they seem 2At the root of nutrient limitation, ecosystems are not as different as they seem 3
(Date:12/24/2014)... The report expects global cell isolation and expansion ... provides a carefully analyzed data about the vital drivers, ... , Full Copy of Report @ http://bit.ly/1yUxy0T ... cell expansion will keep witnessing growth at an impressive ... be driven by rapid technological advancements, government funding and ...
(Date:12/24/2014)... 23, 2014 China Biologic Products, Inc. ... leading fully integrated plasma-based biopharmaceutical company in ... majority-owned subsidiary, Shandong Taibang Biological Products Co. Ltd., ... the China Food and Drug Administration (the "CFDA") ... previously disclosed in the Company,s public filings, the ...
(Date:12/24/2014)... -- PharmaBoardroom,s new report, , Healthcare ... for free download , digs deep into this vibrant ... the sector today. One area where ... developing a homegrown pharmaceutical manufacturing base, even if the government,s ... way off. A cursory comparison with neighboring Morocco ...
(Date:12/24/2014)... SARASOTA, Fla. , Dec. 23, 2014  Rock ... today that it has filed a Clinical Trial Application ... Medicines Healthcare products Regulatory Agency (MHRA) seeking regulatory approval ... its lead molecule, Anatabine Citrate. Contingent on ... to conduct a Phase I trial to assess the ...
Breaking Biology Technology:The Cell Expansion Market is Expected to Reach $14.8 billion by 2019 - New Research Report by MarketsandMarkets 2The Cell Expansion Market is Expected to Reach $14.8 billion by 2019 - New Research Report by MarketsandMarkets 3China Biologic Receives GMP Certification for New Coagulation Factor Facility 2China Biologic Receives GMP Certification for New Coagulation Factor Facility 3PharmaBoardroom Releases New Algeria Pharmaceuticals Report 2PharmaBoardroom Releases New Algeria Pharmaceuticals Report 3Rock Creek Pharmaceuticals Files Clinical Trial Application in the UK for Clinical Trials of Anatabine Citrate Formulations 2Rock Creek Pharmaceuticals Files Clinical Trial Application in the UK for Clinical Trials of Anatabine Citrate Formulations 3
... Neurosciences, Inc. (OTCBB:ILNS), a biopharmaceutical company engaged in ... for the treatment of Alzheimer,s and other neurological ... collaboration agreement with the University California, Irvine to ... vaccine candidate to induce an immune response against ...
... Conference: May 21-24, 2012 ,Exhibition: May 22-24, 2012 ,Pennsylvania ... Medical Design and Manufacturing (MD&M) East Conference have announced ... Convention Center, May 21 - 24, 2012. The conference ... dedicated to medical design and manufacturing professionals, featuring presentations ...
... CMC Biologics is a leading contract manufacturing organization (CMO) ... process development and cGMP manufacture of ... growth factors), as well as monoclonal antibodies. CMC ... characterization capabilities, expertise in continuous perfusion systems and ...
Cached Biology Technology:Intellect Neurosciences Enters Collaboration Agreement with Leading Alzheimer's Research Group at University of California Irvine to Test First in Class Dual Target Vaccine 2Intellect Neurosciences Enters Collaboration Agreement with Leading Alzheimer's Research Group at University of California Irvine to Test First in Class Dual Target Vaccine 3Intellect Neurosciences Enters Collaboration Agreement with Leading Alzheimer's Research Group at University of California Irvine to Test First in Class Dual Target Vaccine 4MD&M East 2012 to Feature FDA and Medical Technology Development Leaders 2CMC Biologics Highlights Technical Acumen at Upcoming Conferences 2CMC Biologics Highlights Technical Acumen at Upcoming Conferences 3CMC Biologics Highlights Technical Acumen at Upcoming Conferences 4CMC Biologics Highlights Technical Acumen at Upcoming Conferences 5
... new product number, created to easily match ... yet, please order under the old Sigma-Aldrich ... assistance. ID clarifier: tissue-culture treated ... cm 2 D H 245 ...
... Novagens PhageMaker System is optimized for maximum ... ligated with any bacteriophage l vector. Using a ... > 10^7 pfu/g arms (> 4 x 10^8 ... This one-tube system is extremely easy to use; ...
Mouse monoclonal [7B9] to beta II Tubulin ( Abpromise for all tested applications). Antigen: Synthetic peptide, CEEEEGEDEA found at the c-terminus of beta II tubulin. Entrez GeneID: 10383 ...
Polymerase (RNA) II (DNA directed) polypeptide L...
Biology Products: