Navigation Links
Evolution drives many plants and animals to be bigger, faster
Date:3/7/2011

Durham, NC For the vast majority of plants and animals, the 'bigger is better' view of evolution may not be far off the mark, says a new broad-scale study of natural selection. Organisms with bigger bodies or faster growth rates tend to live longer, mate more and produce more offspring, whether they are deer or damselflies, the authors report.

Researchers working at the National Evolutionary Synthesis Center compiled and reviewed nearly 150 published estimates of natural selection, representing more than 100 species of birds, lizards, snakes, insects and plants. The results confirm that for most plants and animals, larger body size and earlier seasonal timing such as earlier breeding, blooming or hatching confer significant survival advantages.

"It's a very widespread pattern," said co-author Joel Kingsolver of the University of North Carolina at Chapel Hill.

What's puzzling, the authors say, is not why the 'bigger is better' model of evolution is so common, but why the 'Goldilocks' model is so rare: If organisms are supposedly well-adapted to their particular circumstances, then why is it so seldom the case that the individuals that survive and reproduce the best are the ones that are not too small, nor too big, but just right?

A classic example is human birth weight. Newborns of intermediate size are more likely to survive than newborns that are extremely large or extremely small. In lieu of driving organisms to be bigger and faster over time, the 'Goldilocks' model also known as stabilizing selection favors moderation, the authors explained. But for the vast majority of organismal traits, this pattern is the exception, not the rule. "Rarely is it the case that the individuals that survive and reproduce the best are the ones in the middle," Kingsolver said.

The result is puzzling because the conventional wisdom is that most creatures are well adapted to the environments in which they live. "When we look at na
'/>"/>

Contact: Robin Ann Smith
rsmith@nescent.org
919-668-4544
National Evolutionary Synthesis Center (NESCent)
Source:Eurekalert

Page: 1 2

Related biology news :

1. Worm genome offers clues to evolution of parasitism
2. Advance offers revolution in food safety testing
3. Mass extinctions and the evolution of dinosaurs
4. Egalitarian revolution in the Pleistocene?
5. Reproducing early and often is the key to rapid evolution in plants
6. Illuminating biology: An evolutionary perspective
7. Biologists, educators recognize excellence in evolution education
8. Revealing the evolutionary history of threatened sea turtles
9. Details of evolutionary transition from fish to land animals revealed
10. Genetic based human diseases are an ancient evolutionary legacy
11. Wake Forest plays integral role in effort to revolutionize vehicle safety
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/31/2015)... , July 31, 2015 The 10 th ... held by BGI from October 22-25, 2015, in Shenzhen ... The conference is celebrating its 10 th anniversary this year. ... the world,s most influential annual meetings in the ,omics, fields, ... scientific gatherings. ICG-10 focuses on recent breakthroughs ...
(Date:7/23/2015)... BEDFORD, Mass., July 23, 2015 Aware, Inc. (NASDAQ: ... services, today reported financial results for its second quarter ended ... quarter of 2015 was $4.5 million, a decrease of 33% ...  Net income in the second quarter of 2015 was $0.3 ... million, or $0.04 per diluted share, in the same period ...
(Date:7/21/2015)... NEW YORK , July 21, 2015 /PRNewswire/ ... critical systems, as seen in the recent U.S. ... enterprises a solution to the infosec conundrum, but ... data is stored. To address this dilemma, Biometrics-as-a-Service ... of its Biometric Tokenization SDK for third party ...
Breaking Biology News(10 mins):The 10th International Conference on Genomics (ICG-10) to Open in October 2Aware, Inc. Reports Second Quarter 2015 Financial Results 2Aware, Inc. Reports Second Quarter 2015 Financial Results 3Aware, Inc. Reports Second Quarter 2015 Financial Results 4Aware, Inc. Reports Second Quarter 2015 Financial Results 5Aware, Inc. Reports Second Quarter 2015 Financial Results 6HYPR Corp. Launches Industry First Biometric Tokenization Platform 2HYPR Corp. Launches Industry First Biometric Tokenization Platform 3HYPR Corp. Launches Industry First Biometric Tokenization Platform 4
... a new way of looking beneath the ocean surface ... shrinking. , A remote sensor system developed by Associate ... at MIT, Northeastern University and the Naval Research Laboratory, ... as well as small schools, over a 10,000-square-kilometer area ...
... of Pennsylvania, demonstrate that biodegradable nano-particles containing two ... breast tumors. The unique properties of the ... to deliver two distinct drugs, paclitaxel, the leading ... Taxol, and doxorubicin directly to tumors implanted in ...
... have found a way to keep a protein "watchdog" on ... - if they can keep it on a leash of ... team of scientists including Purdue University's Susan M. Mendrysa has ... has the ability to halt the progression of intestinal tumors ...
Cached Biology News:One fish, two fish: New MIT sensor improves fish counts 2Nano-particles effective in killing cancer with one-two punch of chemotherapeutics 2Loosen leash on cancer protein 'watchdog,' researchers say 2Loosen leash on cancer protein 'watchdog,' researchers say 3Loosen leash on cancer protein 'watchdog,' researchers say 4
(Date:7/30/2015)... the globe, ISN improves the efficiency and effectiveness of contractor management systems. ISN,s online ... contractors in over 80 countries. ... ... Over 60,000 Worldwide Customers In More Than 80 Countries ... in Dallas, TX , ISN has additional offices in Calgary ...
(Date:7/30/2015)... Pa. , July 30, 2015  Discovery ... that it has received the second $1.0M tranche ... Innovation Research (SBIR) grant valued at up to ... company,s aerosolized KL4 surfactant as a potential medical ... injury.  Discovery Labs was awarded an initial $1.0 ...
(Date:7/29/2015)... July 30, 2015 Sanofi, ... for the second quarter of 2015. CEO ... and its performance in different businesses. ... http://www.eurobusinessmedia.com/ceo-direct/sanofi/sanofi-h1-2015-results-interview-with-ceo-olivier-brandicourt?utm_source=ceo-direct&utm_medium=wire Topics covered in ... - Performance drivers - ...
(Date:7/29/2015)... July 29, 2015 US-Australian drug discovery company, ... confirmed it is committed to progressing its ground-breaking technology ... practicable and to ensure the Company delivers the best ... Iain Ross , said the Company currently had ... pre-clinical programs, discovery programs and academic partnerships and initiatives, ...
Breaking Biology Technology:ISN Reaches Over 60,000 Worldwide Customers 2ISN Reaches Over 60,000 Worldwide Customers 3Discovery Labs Receives $1.0 million under an SBIR Grant in Continuing Support of the Development of Aerosolized KL4 Surfactant to Address Radiation-Induced Lung Injury 2Discovery Labs Receives $1.0 million under an SBIR Grant in Continuing Support of the Development of Aerosolized KL4 Surfactant to Address Radiation-Induced Lung Injury 3Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 2Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 3Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 4Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 5Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 6Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 7Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 8Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 9Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 10
... a privately-held company focused on advancing women,s reproductive health, today ... A financing, bringing the total funding to $20 million. The ... the round include Kleiner Perkins Caufield and Byers, TPG Biotech ... the last year, we have executed an aggressive operating plan ...
... 2012   Reportlinker.com announces that a new market ... U.S. Tissue Engineering Markets ... The scope of this research service primarily ... the wound care and surgery space. Surgery ...
... Feb. 1, 2012 Sangamo BioSciences, Inc. (Nasdaq: ... fourth quarter and full year 2011 financial results on Wednesday, ... will be followed by a conference call at 5:00 p.m. ... and webcast. During the conference call, the company will review ...
Cached Biology Technology:Auxogyn Completes $20 Million In Series A Funding 2Auxogyn Completes $20 Million In Series A Funding 3U.S. Tissue Engineering Markets 2U.S. Tissue Engineering Markets 3Sangamo BioSciences Announces Fourth Quarter and Full Year 2011 Conference Call and Webcast 2
IEX-1 S/L (H-20)...
Mouse monoclonal [1.T.4] to WAVE 1 ( Abpromise for all tested applications). Antigen: His6 fusion protein corresponding to full-length rat WAVE1. Entrez Gene ID: 8936...
For the differentiation of mouse embryonic stem cells tooligodendrocytes....
VAP-1 (S-13)...
Biology Products: