Navigation Links
Rodent size linked to human population and climate change
Date:7/30/2009

You probably hadn't noticed -- but the head shape and overall size of rodents has been changing over the past century. A University of Illinois at Chicago ecologist has tied these changes to human population density and climate change.

The finding is reported by Oliver Pergams, UIC research assistant professor of biological sciences, in the July 31 issue of PLoS One.

Pergams said that such size-and-shape changes in mammals, occurring around the world in less than a century, are quite substantial.

He had done earlier studies on a century's worth of anatomic changes between two geographically isolated rodents -- Channel Island deer mice from coastal California and white-footed mice northwest of Chicago -- and noted fast change among both.

"I suspected they weren't unique examples," he said. "I wondered whether these changes were occurring elsewhere, whether they were global in nature, and what some of the causes may be."

Pergams examined specimen rodents from museums around the world, including the big collections held at Chicago's Field Museum and the Smithsonian in Washington. Altogether, he recorded more than 17,000 body and skull measurements from 1,300 specimens from 22 locations in Africa, the Americas and Asia. The animals were collected from 1892 to 2001, and Pergams compared those from before 1950 to those collected after.

He also compared specimens gathered from sparsely populated islands to those from the mainland, where human populations were denser.

Pergams found both increases and decreases in the 15 anatomic traits he measured, with changes as great as 50 percent over 80 years. Ten of the 15 traits were associated with changes in human population density, current temperature, or trends in temperature and precipitation.

"Rapid change, contrary to previous opinion, really seems to be happening quite frequently in a number of locations around the world," Pergams said. "Ther
'/>"/>

Contact: Paul Francuch
francuch@uic.edu
312-996-3457
University of Illinois at Chicago
Source:Eurekalert

Page: 1 2

Related biology news :

1. Novel anti-cancer mechanism found in long-lived rodents
2. Rodent fossils allows to determine climate of the Iberian Peninsula 6 million years ago
3. LSUHSC shows for first time infant inhalation of ultrafine air pollution linked to adult lung disease
4. Genetic marker linked to problem behaviors in adults with developmental disabilities
5. Early-life experience linked to chronic diseases later in life: UBC research
6. Further gene mutations linked to autism risk
7. Protein linked to change in tissue that surround and support breast tumors
8. Dioxins in food chain linked to breastfeeding ills
9. Scientists uncover mode of action of enzyme linked with several types of cancer
10. Protein linked to mental retardation controls synapse maturation, plasticity, CSHL team finds
11. UCSF discovers new glucose-regulating protein linked with diabetes
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/30/2014)... paving the way for a breakthrough that may ... exposed to poisonous chemicalsparticularly those in pesticides and ... current issue of the journal ChemBioChem ... compounds commonly used in pesticides and warfare agents. ... of Engineering Associate Professor of Chemical and Biological ...
(Date:7/30/2014)... studying the potential effects of climate change on ... on the wrong factors, according to a new ... Conservation Society, University of Queensland, and other organizations. ... science is missing the point when it comes ... of climate change scientists focus on the "direct" ...
(Date:7/30/2014)... pleased to announce its new relationship with the International ... CINP will partner to publish International Journal of ... journal. , Alan Frazer, Editor-in-Chief of IJNP ... of OUP will further facilitate the goal for the ... leading journals within neuropsychopharmacology. The conversion of the ...
Breaking Biology News(10 mins):Engineering a protein to prevent brain damage from toxic agents 2Conservation scientists asking wrong questions on climate change impacts on wildlife 2OUP to partner with the International College of Neuropsychopharmacology 2
... a research team from the National Institute of Standards ... has shown how to detect and monitor the tiny ... of an atomic force microscope probe, and in so ... of the instruments measurements under ambient conditions. Their recently ...
... have learned to manipulate the proportion of females and ... mapped the entire genome of a bacterium that infects ... published in PNAS, reveal extremely high frequencies of gene ... it is hoped that it will be possible to ...
... DC, March 25, 2009 - Critically endangered hawksbill turtles ... the Dominican Republic after a powerful government campaign cracked ... 99 percent of these souvenirs have been withdrawn or ... A 2006 survey carried out by TRAFFIC found ...
Cached Biology News:Making a point: Picoscale stability in a room-temperature AFM 2Gene exchange common among sex-manipulating bacteria 2Turtles no longer turned into souvenirs 2
(Date:7/31/2014)... 2014 SoundConnect , an ... is proud to announce the addition of Adobe ... Connect’s elearning tools to quickly deploy and manage ... training tools for desktop and mobile learning solutions. ... the perfect online training solution, enabling organizations to ...
(Date:7/30/2014)... , July 30, 2014 Regulus ... biopharmaceutical company leading the discovery and development of innovative ... financial results and highlights for the quarter ended June ... U.S. financial markets close. Regulus will ... 6, 2014, at 5:00 pm Eastern Daylight Time to ...
(Date:7/30/2014)... July 30, 2014 A study presented ... safety and efficacy of CSL Behring,s C1 Inhibitor ... transplants in highly sensitized patients. C1-INH is a ... complement system. The study shows that ... in the levels of complement components 3 and ...
(Date:7/30/2014)... 30, 2014 Selexis SA , ... drug discovery and mammalian cell line development, announced today ... ™ will be presented at the 10th Annual ... September 8 – 10, 2014 at the Double Tree ... The following abstract will be presented during an oral ...
Breaking Biology Technology:SoundConnect Enhances Portfolio with Adobe Connect Learning Management System (LMS) 2Regulus Announces Timing for Second Quarter 2014 Financial Results Webcast and Conference Call 2Regulus Announces Timing for Second Quarter 2014 Financial Results Webcast and Conference Call 3Study Suggests C1-INH May Aid in Prevention of Antibody-Mediated Rejection Following Kidney Transplant 2Study Suggests C1-INH May Aid in Prevention of Antibody-Mediated Rejection Following Kidney Transplant 3Selexis SA to Present New Data and a Case Study at IBC’s Cell Line Development and Engineering Conference 2Selexis SA to Present New Data and a Case Study at IBC’s Cell Line Development and Engineering Conference 3
... County Representatives Unveil State-of-the-Art Facility ... ... Officials from Novavax,Inc. (Nasdaq: NVAX ), the State ... new state-of-the-art vaccine production,facility at the company,s headquarters in Rockville, ...
... Total Revenues of $62.0 Million, Up 55 Percent over First Quarter ... 2007, - First ... Before Non-Cash Charges of $1.13 per Basic Share, ... per Diluted Share, SILVER SPRING, Md., May 1 United Therapeutics,Corporation (Nasdaq: UTHR ) ...
... Strategic Transactions Increase EUSA,s Focus on Late-Stage and Marketed ... ... Products, DOYLESTOWN, Pennsylvania and OXFORD, England, May 1 ,EUSA ... pain control and critical care, today announced that,it has divested ...
Cached Biology Technology:Novavax Opens Its First U.S. Vaccine Plant 2Novavax Opens Its First U.S. Vaccine Plant 3Novavax Opens Its First U.S. Vaccine Plant 4United Therapeutics Reports First Quarter 2008 Financial Results 2United Therapeutics Reports First Quarter 2008 Financial Results 3United Therapeutics Reports First Quarter 2008 Financial Results 4United Therapeutics Reports First Quarter 2008 Financial Results 5United Therapeutics Reports First Quarter 2008 Financial Results 6United Therapeutics Reports First Quarter 2008 Financial Results 7EUSA Pharma Divests Monoclonal Antibody Research Business and Early-Stage Oncology Product 2EUSA Pharma Divests Monoclonal Antibody Research Business and Early-Stage Oncology Product 3
Many mammalian cell types and experimental situations create challenges for standard transfection experiments. The ViraPower Lentiviral Expression System overcomes these challenges with efficient...
Many mammalian cell types and experimental situations create challenges for standard transfection experiments. The ViraPower Lentiviral Expression System overcomes these challenges with efficient vir...
Src cDNA Expression Kit (wild type)...
Homogenizing Solution, 18ml Proteinase K - [50ug/l] 75 l...
Biology Products: