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:
*Name:
*Comment:
*Email:


(Date:12/5/2018)... NEW YORK (PRWEB) , ... December 03, 2018 ... ... with Cartessa Aesthetics , an emerging leader in the distribution and marketing ... has experienced rapid growth, projecting $20MM in sales for 2018. Cartessa’s success ...
(Date:12/5/2018)... ... 2018 , ... The new program allows 3rd ... innovative solutions for which high-speed imaging is a necessary albeit challenging component. , ... and instrumentation, allowing partner companies to dedicate their resources on their core strengths ...
(Date:11/27/2018)... ... 2018 , ... PulseEd™ uses researched technology, published in the Journal of ... flow to the penis. Regular and unimpeded blood flow to the blood vessels of ... function. The recorded results of SWT (sound wave therapy), indicated that almost 80% of ...
Breaking Biology News(10 mins):
(Date:11/11/2018)... ... , ... Triple W, an innovator of connected health devices, today announced that ... DFree ®, the first health tech wearable device for incontinence that monitors how full ... The announcement was made during CES Unveiled New York, an invite-only tech event bringing ...
(Date:11/9/2018)... ... November 08, 2018 , ... IC ... a machine-learning powered approach to increasing recovery rates by creating a comprehensive contact ... Collections (AIC) product developed by NLP Logix, a Jacksonville, Florida-based AI solutions company, ...
(Date:11/7/2018)... ... November 07, 2018 , ... ... a campaign to increase awareness of the adult tissue stem cell counting problem ... of November, the company is intensifying this effort with new educational publications and ...
(Date:11/6/2018)... ... November 06, 2018 , ... Crucial Data ... data collection and management. TrialKit ™, an eClinical platform, has incorporated Apple’s ... quickly and easily sign in to the app via facial recognition or fingerprint ...
Breaking Biology Technology:
Cached News: