Navigation Links
American carnivores evolved to avoid each other, new study suggests
Date:3/10/2009

How do the many carnivorous animals of the Americas avoid competing for the same lunch, or becoming each other's meal?

A possible answer comes from a new study by a pair of researchers at the University of California, Davis. Their large-scale analysis shows that it's not just chance that's at play, but avoidance strategies themselves that have been a driving force in the evolution of many carnivores, influencing such factors as whether species are active daytime or nighttime, whether they inhabit forests or grasslands, or live in trees or on the ground.

The Americas are home to more than 80 species of terrestrial carnivores, including cats, dogs, bears, weasels, skunks and raccoons. Commonly, 20 or more species can occupy the same region.

"For the most part, these overlapping species all share the same prey base -- other animals -- which includes each other," said Jennifer Hunter, who conducted the study for her Ph.D. dissertation in ecology.

Hunter and co-author Tim Caro, professor of wildlife, fish and conservation biology, first plotted the known ranges of all of the American carnivores on one big digital map. Assuming that wherever ranges overlapped, competition and predation between those species was possible, they then compared those animals' behavioral characteristics, body sizes and coloration. By analyzing this huge matrix of information, they were able to tease out broad patterns of strategies employed by each family.

For example, their map showed that the bear and dog families shared ranges with the greatest number of potential competitors. Most species in these families are omnivores, which helps reduce competition for a meat diet.

Raccoon family members, although small, run the lowest risk of becoming prey, because most live out of harm's way in trees.

One of their most surprising findings, Hunter said, was that the most petite carnivores, skunks, along with some weasels, lack an av
'/>"/>

Contact: Liese Greensfelder
lgreensfelder@ucdavis.edu
530-752-6101
University of California - Davis
Source:Eurekalert  

Page: 1 2

Related biology news :

1. News from the March 2009 Journal of the American Dietetic Association
2. Many middle-aged and older Americans not getting adequate nutrition
3. American Institute of Physics announces awards for best science writing
4. Honest crabs, power to the hungry, nice mice and clever meerkats: News from the American Naturalist
5. Carnegies Doug Koshland elected Fellow of the American Academy of Microbiology
6. African-Americans aware and accepting, but often do not receive, the HPV vaccine
7. Statement by the Egg Nutrition Center and American Egg Board on Diabetes Care study on egg consumption
8. News from the February 2009 Journal of the American Dietetic Association
9. American Chemical Societys Weekly PressPac -- Jan. 28, 2009
10. Carnegies Joe Berry elected Fellow of the American Geophysical Union
11. American Association for Cancer Research hosts Science of Cancer Health Disparities conference
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
American carnivores evolved to avoid each other, new study suggests
(Date:9/30/2014)... aquatic environment on Earth, but when the climate changes ... the limit. The amount of time needed to adjust ... species cope in the future, reveals a new study ... the scientific journal Proceedings of the Royal Society ... increasing levels of greenhouse gases in the atmosphere. The ...
(Date:9/30/2014)... If you want your doctor to know what goes wrong ... a good idea to know what "normal" actually is. That,s ... issue of the FASEB Journal comes ... complete transcriptomea key set of molecules that can help scientists ... particular time. What,s more, they found never-before-detected gene activity and ...
(Date:9/30/2014)... People who suffer from asthma may think there,s not ... besides properly taking medications and avoiding allergic triggers. ... Annals of Allergy, Asthma and Immunology , the scientific ... Immunology (ACAAI), asthma sufferers can learn lessons about managing ... in the Annals article improved her asthma once she ...
Breaking Biology News(10 mins):Shape up quickly -- applies to fish, too! 2Scientists identify which genes are active in muscles of men and women 2Asthma symptoms kicking up? Check your exposure to air pollution 2
... used by bodybuilders could be the key to treating ... new research shows. The amino acid L-tyrosine had ... in laboratory tests on mice, significantly improving symptoms of ... New South Wales (UNSW) found. Trials showed that ...
... The EpiGen Consortium, an international alliance of the ... Sciences of the Agency for Science, Technology and ... Southampton, Medical Research Council Lifecourse Epidemiology Unit, ... announce the creation of a research collaboration with ...
... 22, 2011 /PRNewswire-iReach/ -- Researchers have demonstrated ... Curran eat significantly more fruits and vegetables and get ... 12 months ago.  By participating in the WellSteps ... in nutrition, physical activity, and sleep quality. Employees also ...
Cached Biology News:Hope for muscle wasting disease 2EpiGen announces collaboration with Nestlé 2New Study Shows Impact of Employee Wellness Efforts 2
(Date:10/2/2014)... BRIDGEWATER, N.J. , Oct. 2, 2014 /PRNewswire/ ... in synthetic biology, and Amneal Pharmaceuticals LLC ... volume in the U.S., today announced the formation ... a target active pharmaceutical ingredient (API).  Utilizing Intrexon,s ... collaboration is to develop a consistent, scalable, and ...
(Date:10/1/2014)...  Pressure BioSciences, Inc. (OTCQB: PBIO) ("PBI" or the ... of high pressure-based sample preparation systems to the life ... to present at the 2 nd  Global Life ... The Conference will take place at the Warsaw Stock ... Schumacher , President and CEO of PBI, will present ...
(Date:10/1/2014)... The participants committed to not only creating unique ... time adjusting, tweaking and testing virtual models and 3D ... judging. , “I enjoyed being involved as a judge,” ... entries showed a commendable range exploring the technical capabilities ... medium and the creativity of the contestants.” , Array ...
(Date:10/1/2014)... (PRWEB) October 01, 2014 Slone ... Clinical Therapeutics, Healthcare IT, and Laboratory Testing industries, reported ... positions at the director level and above from July ... to stay on top of rapid breakthroughs in diagnostics, ... many diagnostic companies have been forced to fold, consolidate, ...
Breaking Biology Technology:Intrexon and Amneal Expand Relationship with Second Product Collaboration 2Intrexon and Amneal Expand Relationship with Second Product Collaboration 3Pressure BioSciences, Inc. Invited to Present at the 2nd Global Life Sciences Conference in Warsaw, Poland 2Pressure BioSciences, Inc. Invited to Present at the 2nd Global Life Sciences Conference in Warsaw, Poland 3Pressure BioSciences, Inc. Invited to Present at the 2nd Global Life Sciences Conference in Warsaw, Poland 4Array Architects Challenges Staff to Create with 3D Printer 2Slone Partners Meets Growing Demand as Industry Focuses on Reimbursement & Regulation 2
... Karudapuram, Ph.D. and David Batey Ph.D. , ... , ... real-time quantitative PCR (qPCR) protocol was used on the MJ Research ... Two hydrolysis probes, one labeled with VIC and the other labeled with FAM, ...
... Ph.D.1, Richard Kurtz, Ph.D.2, David Batey, Ph.D.2 , ... Sciences, Stanford University, Stanford, CA , , ... , ... the amoA gene were used to measure the ammonia-oxidizing bacteria (AOB) population in soils maintained ...
... , AquaPure Genomic DNA Isolation Kit , ... DNA (15-ml tube prep), , Method ... 1. Add 1 ml body fluid (e.g., cerebrospinal fluid, plasma, saliva, serum, , ... , tube containing 5 ml cell lysis solution. Pipet up and ...
Cached Biology Technology:Rapid SNP Genotyping of the Pharmacogenomically Important Allele CYP2D6*4 Using Real-Time qPCR on the DNA Engine Opticon 2 System 2Rapid SNP Genotyping of the Pharmacogenomically Important Allele CYP2D6*4 Using Real-Time qPCR on the DNA Engine Opticon 2 System 3Rapid SNP Genotyping of the Pharmacogenomically Important Allele CYP2D6*4 Using Real-Time qPCR on the DNA Engine Opticon 2 System 4Rapid SNP Genotyping of the Pharmacogenomically Important Allele CYP2D6*4 Using Real-Time qPCR on the DNA Engine Opticon 2 System 5Rapid SNP Genotyping of the Pharmacogenomically Important Allele CYP2D6*4 Using Real-Time qPCR on the DNA Engine Opticon 2 System 6Rapid SNP Genotyping of the Pharmacogenomically Important Allele CYP2D6*4 Using Real-Time qPCR on the DNA Engine Opticon 2 System 7Monitoring Microbial Populations Using Real-Time qPCR on the MJ Research Opticon 2 System 2Monitoring Microbial Populations Using Real-Time qPCR on the MJ Research Opticon 2 System 3Monitoring Microbial Populations Using Real-Time qPCR on the MJ Research Opticon 2 System 4Monitoring Microbial Populations Using Real-Time qPCR on the MJ Research Opticon 2 System 5Monitoring Microbial Populations Using Real-Time qPCR on the MJ Research Opticon 2 System 6Monitoring Microbial Populations Using Real-Time qPCR on the MJ Research Opticon 2 System 7Genomic DNA Isolation From 1 ml of Body Fluid 2
... FailSafe™ PCR System is the only PCR ... time and every time. It provides accuracy, ... the source or the property of the ... PCR Enzyme Mix, a unique blend of ...
With L-glutamine and potassium bicarbonate. Sterile, Insect cell culture tested...
Mol wt: average mol wt12,360.96 Da by calculation...
Originally developed for the culture of Drosophila; suitable for culture of other dipteran cell lines. Powder, Insect cell culture tested...
Biology Products: