HOME >> BIOLOGY >> NEWS
For some young fish, early gene expression is a clear harbinger of fated lifestyle

As juveniles, individuals of many fish species face a developmental choice that will profoundly affect their future: whether to adopt a sedentary or migratory lifestyle. Sedentary (or "residential") individuals remain in the region of their birth, while their migratory compatriots set forth on long open-water journeys. The developmental choice of the residential versus migratory "life history" is known to be influenced by environmental factors, but is not well understood at the genetic level. Researchers now report that fish that are very closely related genetically show dramatically different patterns of actual gene expression if they have adopted different lifestyle fates. Moreover, and perhaps more surprisingly, less-related individuals from geographically different populations nonetheless exhibit very similar patterns of gene expression if they have adopted the same fate--residential or migratory. Thus, the researchers found that levels of expression of a great many genes depend primarily on an individual's future lifestyle.

The findings, which illuminate how programs of gene expression have evolved to control profoundly different developmental outcomes, are reported in the April 18th issue of Current Biology by Drs. Thomas Giger, Carlo Largiadr, and Laurent Excoffier of the University of Bern, along with colleagues from France, Ireland, Denmark, and the UK.

Salmonid fish, which include trout and whitefish as well as salmon, show exceptional levels of life-history variation--that is, residential and migratory types often co-occur within a single population of young fish. Before reaching sexual maturity and leaving their natal stream, migratory individuals undergo dramatic morphological, physiological, and behavioral changes that prepare them for adulthood in open fresh and salty waters.

In their innovative work, which is based on studying the gene expression profiles of hundreds of genes at a time in different fish populations, the resear
'"/>

Contact: Heidi Hardman
hhardman@cell.com
617-397-2879
Cell Press
17-Apr-2006


Page: 1 2

Related biology news :

1. Universes stringy birth revealed by young Czech scientist in EURYI winning project
2. 2007 EURYI: 20 young researchers to receive Nobel Prize-sized awards for breakthrough ideas
3. High rates of HIV infection documented among young Nepalese girls sex-trafficked to India
4. Throwing motion in young baseball players may actually protect shoulder
5. Eavesdropping comes naturally to young song sparrows
6. Cannibalism of the young allows individual fish to specialize
7. Study to probe how healthy younger adults make use of genetic tests
8. Cat hair at home poses an allergy risk, particularly for young children
9. In young mice, gregariousness seems to reside in the genes
10. Three young scientists at Yale honored with Sloan Foundation Fellowships
11. PET imaging shows young smokers quick benefit of quitting

Post Your Comments:
(Date:11/21/2014)... According to a new market research report ... Control, Intrusion Detection, Parking Management, Under Vehicle Inspection), End ... - Global Forecasts to 2020", published by MarketsandMarkets, The ... $25 Billion in 2014 and is expected to reach ... 8.69%. Browse 116 market data Tables and ...
(Date:11/21/2014)... SAN JOSE, Calif. , Nov. 20, 2014 /PRNewswire/ ... a global leader in microcontroller (MCU) and touch technology ... digital temperature sensors with the widest V ... family delivers higher temperature accuracy and faster I 2 ... nonvolatile registers and serial EEPROM memory making them ideal ...
(Date:11/18/2014)... , Nov. 18, 2014   EyeLock ... authentication solutions, and MorphoTrust USA (Safran), ... services, today announced a strategic partnership to offer ... motor vehicle administration (MVA), airport screening and financial ... identity-related solutions, MorphoTrust serves consumers through a nationwide ...
Breaking Biology News(10 mins):Industrial Security Systems Market Worth $38 Billion by 2020 2Industrial Security Systems Market Worth $38 Billion by 2020 3Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 2Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 3Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 4EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 2EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 3
(Date:12/19/2014)... (PRWEB) December 18, 2014 Today, ... locate its pilot production facility and future company ... and produce innovative new materials that safely and ... not only because of its historic, strong support ... efforts to attract leading edge, technology-based companies such ...
(Date:12/19/2014)... December 18, 2014 iLab Solutions, the ... appointment of Siri Bryant as the new Director of ... of Core Implementations. These two new leadership positions were ... service by ensuring that iLab continues to meet the ... last four years, iLab has been deployed at over ...
(Date:12/19/2014)... -- Decision Resources Group finds that the Asia ... through 2023 as the aging population, increasing adoption of ... all spur procedure volumes. Growth will be particularly rapid ... and India , where rising ... a larger proportion of the population. Other ...
(Date:12/17/2014)... 16, 2014 The Activated Carbon ... which is why IBISWorld updated its original industry research ... benefit from an intensified focus on environmental policy. Over ... emission standards for power plants and a range of ... IBISWorld Industry Analyst Sarah Kahn, “a range of downstream ...
Breaking Biology Technology:Technology Company TiFiber™ to Establish Production Facility in Fort Smith, Arkansas with Support from Local Investors 2Technology Company TiFiber™ to Establish Production Facility in Fort Smith, Arkansas with Support from Local Investors 3Technology Company TiFiber™ to Establish Production Facility in Fort Smith, Arkansas with Support from Local Investors 4iLab Solutions Announces Two New Leadership Positions to Meet the Needs of Its Growing Customer Base 2Asia Pacific Dental Biomaterial Market Will Grow Strongly Through 2023 2Asia Pacific Dental Biomaterial Market Will Grow Strongly Through 2023 3Activated Carbon Manufacturing in the US Industry Market Research Report Has Been Updated from IBISWorld 2Activated Carbon Manufacturing in the US Industry Market Research Report Has Been Updated from IBISWorld 3
Cached News: