Navigation Links
New discovery: Molecular variation in one gene affects the growth of natural populations

For the first time, ecologists have been able to show that molecular variation in one gene may affect the growth of a population in its natural habitat. Research Professor Ilkka Hanski, University of Helsinki, and Dr Ilik Saccheri, University of Liverpool, UK, discovered that the population growth of the Glanville fritillary butterfly (Melitaea cinxia) is affected by the allelic composition of the phosphoglucose isomerase (Pgi) enzyme. The result challenges previous views according to which allelic variation in populations, and possible consequent differences in individual performance, would be of no significance for population growth.

It has been observed in previous studies on the Glanville fritillary and Colias butterflies that the individuals' Pgi genotype affects their flight metabolic rate and reproductive performance. The present result proves that these differences between individuals also have repercussions at the population level. The role of Pgi is emphasised by the fact that variation in the other genes studied showed no connection to population growth.

How strongly the differences in Pgi alleles affect population growth depends on ecological factors. The size of the habitat patch and its connectivity to existing populations affect migration and gene flow between populations. The study shows that genetic factors and the structure of the habitat together influence variation in population growth. The results also show that the structure of the habitat and the dynamics of the species in a fragmented habitat maintain variation in the gene encoding for the Pgi enzyme

According to previously held views, populations dynamics in natural populations is mainly influenced by environmental factors and demography, that is birth rate, death rate and migration. Genetic variation and natural selection have been thought to have no direct effect on population growth or a weak effect at most.

Scientists analysed hundreds of well-cha
'"/>

Source:University of Helsinki


Page: 1 2

Related biology news :

1. New discovery: If it werent for this enzyme, decomposing pesticide would take millennia
2. Molecular biology fills gaps in knowledge of bat evolution
3. Molecular machine may lead to new drugs to combat human diseases
4. Molecular Motors Cooperate In Moving Cellular Cargo, Study Shows
5. Molecular models advance the fight against malaria
6. Molecular fossils uncover link between viruses and the immune system
7. Molecular thermometers on skin cells detect heat and camphor
8. Molecular messengers perform a crucial role in the ability of injured nerve cells to heal themselves
9. Molecular steps involved in the creation of gene-silencing microRNAs identified
10. Molecular miners find pain relief drugs from the sea
11. Molecular mechanism of feather formation found
Post Your Comments:
(Date:10/15/2014)... the pandemic risk from strains of influenza virus increases ... ourselves to become complacent that the most substantial threats ... , Influenza pandemics arise when a new virus strain ... immunity – spreads in the human population. There have ... the worst of which – the 1918 Spanish Flu ...
(Date:10/15/2014)... University Mainz (JGU) as a full member, ensuring ... a significant nationwide standing in the field of ... Gutenberg University Mainz as a full member of ... and international competition for the best minds and ... proud that Mainz University has been recognized as ...
(Date:10/15/2014)... increased resistance to bacterial pneumonia in female mice to ... , Females are naturally more resistant to respiratory infections ... shown that increased resistance to bacterial pneumonia in female ... 3 (NOS3). They also show that this enzyme is ... hormone estrogen. , The team, lead by Professor Lester ...
Breaking Biology News(10 mins):Scientists 'must not become complacent' when assessing pandemic threat from flu viruses 2Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 2Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 3
... when a mouse repeatedly experiences defeat by a dominant ... memory molecule in a brain circuit for social learning, ... National Institute of Mental Health (NIMH) have discovered. ... welcome strangers in spite of repeated social defeat. Their ...
... cure rate for the once almost universally fatal childhood ... in the near future, thanks to improvements in diagnosis ... investigators at St. Jude Children's Research Hospital. Almost 4,000 ... each year, about two-thirds of which are in children ...
... in repairing damaged DNA causes mice to develop the ... have discovered. , Scientists at OHSU, the University of ... that generating mice that lack the gene encoding the ... obesity and reach nearly twice the weight of their ...
Cached Biology News:Mice lacking social memory molecule take bullying in stride 2Mice lacking social memory molecule take bullying in stride 3St. Jude projects 90 percent cure rate for ALL 2St. Jude projects 90 percent cure rate for ALL 3St. Jude projects 90 percent cure rate for ALL 4St. Jude projects 90 percent cure rate for ALL 5Removing DNA repair gene causes metabolic syndrome 2Removing DNA repair gene causes metabolic syndrome 3
(Date:10/25/2014)... 24, 2014 ... has announced the addition of the  "The ... Other 2-D Nanomaterials "  report to their ... ,CNTs and graphene are the strongest, lightest ... with a performance-per-weight greater than any other ...
(Date:10/22/2014)... The Americas Inorganic Refrigerants Market report defines ... with analysis and forecast of revenue. , Browse ... Market report, to get an idea of the ... of the segmentation in the Americas inorganic refrigerants ... figures. , http://www.micromarketmonitor.com/market/americas-inorganic-refrigerants-4191654241.html , Inorganic ...
(Date:10/22/2014)... October 22, 2014 WriteResult, LLC ... – has been working with a team of researchers ... Haven Farms Community Farming Collaborative to provide electronic questionnaire ... The study, which started in May, aims to ... provides participants weekly exposure to and participation in urban ...
(Date:10/22/2014)... According to new market research report "Cloud ... Deployment & Support), by Service Model (SaaS, PaaS, ... (Hybrid & Community)) - Global Forecast to 2019", ... Professional Services Market into various sub-segments with an ... identifies the drivers and restraints for this market ...
Breaking Biology Technology:The Global Market for Carbon Nanotubes, Graphene and Other 2-D Nanomaterials 2The Global Market for Carbon Nanotubes, Graphene and Other 2-D Nanomaterials 3The Global Market for Carbon Nanotubes, Graphene and Other 2-D Nanomaterials 4The Americas Inorganic Refrigerants Market is estimated to grow to $71.6 million by 2018 - New Report by MicroMarket Monitor 2The Americas Inorganic Refrigerants Market is estimated to grow to $71.6 million by 2018 - New Report by MicroMarket Monitor 3myPROpad™ Topic of Panel Discussion at the Yale Food Systems Symposium 2myPROpad™ Topic of Panel Discussion at the Yale Food Systems Symposium 3Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 2Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 3Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 4Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 5
... 10, 2011 Boston Scientific Corporation (NYSE: ... a clinical education program and online resource center for ... spinal cord stimulation (SCS) technology, procedures and techniques.  The ... the International Spine Intervention Society (ISIS) occurring this week ...
... Verenium Corporation (Nasdaq: VRNM ), a leading industrial ... enzymes, today reported a summary of recent Company highlights and ... June 30, 2011. "I am very pleased with ... partnership negotiations in the first half of the year," said ...
... NEW YORK, Aug. 9, 2011 Reportlinker.com ... is available in its catalogue: ...     http://www.reportlinker.com/p0591346/ ... Biochips, DNA Chips, Genosensors, Microarrays and Labs-on-the-Chip ...
Cached Biology Technology:Boston Scientific Launches Neuromodulation Learning Institute To Enhance Clinical Education For Spinal Cord Stimulation 2Boston Scientific Launches Neuromodulation Learning Institute To Enhance Clinical Education For Spinal Cord Stimulation 3Boston Scientific Launches Neuromodulation Learning Institute To Enhance Clinical Education For Spinal Cord Stimulation 4Verenium Reports Financial Results for the Second Quarter and Six Months Ended June 30, 2011 2Verenium Reports Financial Results for the Second Quarter and Six Months Ended June 30, 2011 3Verenium Reports Financial Results for the Second Quarter and Six Months Ended June 30, 2011 4Verenium Reports Financial Results for the Second Quarter and Six Months Ended June 30, 2011 5Verenium Reports Financial Results for the Second Quarter and Six Months Ended June 30, 2011 6Verenium Reports Financial Results for the Second Quarter and Six Months Ended June 30, 2011 7Verenium Reports Financial Results for the Second Quarter and Six Months Ended June 30, 2011 8Verenium Reports Financial Results for the Second Quarter and Six Months Ended June 30, 2011 9Biochips: Genosensors, Microarrays, Labs-On-The-Chip 2
... The FDSS6000 System is an ... assays, assay development and high throughput ... and luminescence modalities., The Hamamatsu light ... highlight our companys decades-long experience in ...
...
... supplies, for 10 chips, provides the ... high-sensitivity RNA analysis (picogram levels) with ... electrophoresis system. Supplied are 1,250 microliters ... stain, 20 microliters RNA ladder, 900 ...
... 3-(3,5-Dibromo-4-hydroxy-benzoyl)-2-ethyl-benzofuran-6-sulfonicacid-(4-(thiazol-2-ylsulfamyl)-phenyl)-amide White solid. ... GAS. A cell-permeable sulfanamido-benzbromarone compound that ... non-competitive allosteric inhibitor of PTP1B (IC ... 8 μM for PTP1B 403 ...
Biology Products: