Navigation Links
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 Largiadèr, 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, t
'"/>

Source:Cell Press


Page: 1 2

Related biology news :

1. Live fast, die young true for forests too
2. High rates of sexually transmitted infections found in young drug users
3. Sharp older brains are not the same as younger brains
4. Thinner and younger
5. Even fish dont swim well when theyre young!
6. Life and death in the hippocampus: what young neurons need to survive
7. Wild meerkats school their young
8. PET imaging shows young smokers quick benefit of quitting
9. In young mice, gregariousness seems to reside in the genes
10. Agilent Technologies introduces advanced zebrafish, mouse microarrays for stem cell and developmental biology research
11. Sudden change in social status triggers genetic response in male fish, study finds
Post Your Comments:
(Date:3/30/2015)... --Research and Markets ( http://www.researchandmarkets.com/research/lc9bnl/global_gesture ) has ... Market in Automotive Sector 2014-2018" report to their ... Recognition market in Automotive Sector to grow at a ... Gesture recognition is the ability of a device to ... Gesture recognition technology can be 2D-based or 3D-based. It ...
(Date:3/24/2015)... 24, 2015   NexID Biometrics LLC, whose ... needs, today announced the beginning of shipments of version ... The company, based in Potsdam, N.Y. ... Connect:ID Expo, which began here today at the Walter ... 2.0 of its SDK boosts the accuracy rate range ...
(Date:3/23/2015)... , March 23, 2015  In the 2014 fiscal ... case conviction losses. This figure accounts for a fraction ... to The Nilson Report, exceeds $11 billion globally. The ... after a crime has occurred. Investor Mark Saint ... expert Joe Paolella partnered to administer the ...
Breaking Biology News(10 mins):Global Gesture Recognition Market in Automotive Sector Report 2015 - Growing Number of Partnerships 2NexID Begins Shipments Of Version 2.0 Fake-Finger-Detection Solution 2Polygraph Test Now Used to Protect Investors From Fraud 2Polygraph Test Now Used to Protect Investors From Fraud 3
... closely associated with the African savanna -- fierce lions, ... players when it comes to shaping the ecosystem. ... be the termite, say ecologists who,ve found that these ... Kenya via a network of uniformly distributed colonies. Termite ...
... study finds heterotrophic bacteria counts, in more than 70 ... specified by the United States Pharmacopeia (USP). Researchers ... 110th General Meeting of the American Society for Microbiology ... water a large number of urban Canadians are switching ...
... animals most closely associated with the African savanna -- ... relatively minor players when it comes to shaping the ... to be the termite, say ecologists who,ve found that ... central Kenya via a network of uniformly distributed colonies. ...
Cached Biology News:The star of Africa's savanna ecosystems may be the lowly termite 2The star of Africa's savanna ecosystems may be the lowly termite 3Study finds high level of bacteria in bottled water in Canada 2Lowly termite, not the lion or elephant, may be the star of Africa's savanna 2Lowly termite, not the lion or elephant, may be the star of Africa's savanna 3
(Date:4/1/2015)... , April 1, 2015  Adaptive Biotechnologies ... The Lancet Oncology showing that ... company,s next-generation sequencing-based minimal residual disease (MRD) detection ... MRD test) accurately identifies patients with diffuse large ... relapse after initial treatment, usually several months before ...
(Date:4/1/2015)... 01, 2015 Park Systems, ... selected to receive the prestigious “Best Analytic Instrumentation ... NX10 is the premium research-grade True Non-Contact AFM, ... linearity, closed-loop detector noise, and minimized thermal drift. ... n, which allows images with a single click, ...
(Date:4/1/2015)... /PRNewswire/ - Portage Biotech Inc. ("Portage") (OTC Market: ... announce that Biohaven Pharmaceutical Holding Company Limited (Biohaven), ... an agreement with inVentiv Health for the operational ... lead compound (BHV-0223). Biohaven is ... stage neuroscience compounds targeting the glutamatergic system. Clinical ...
(Date:4/1/2015)... FORT LAUDERDALE, Fla. , April 1, 2015 /PRNewswire/ ... nothing at all about oral cancer (68 percent) and ... at their last dental check-up, according to findings from ... Inc. ("Vigilant"), a leading innovator and developer of ... of cancer. The online survey polled 1,050 ...
Breaking Biology Technology:Adaptive Biotechnologies' clonoSEQ Minimal Residual Disease Test Predicts Relapse in Diffuse Large B-Cell Lymphoma Patients by Sensitively Detecting Circulating Tumor DNA 2Adaptive Biotechnologies' clonoSEQ Minimal Residual Disease Test Predicts Relapse in Diffuse Large B-Cell Lymphoma Patients by Sensitively Detecting Circulating Tumor DNA 3Adaptive Biotechnologies' clonoSEQ Minimal Residual Disease Test Predicts Relapse in Diffuse Large B-Cell Lymphoma Patients by Sensitively Detecting Circulating Tumor DNA 4Adaptive Biotechnologies' clonoSEQ Minimal Residual Disease Test Predicts Relapse in Diffuse Large B-Cell Lymphoma Patients by Sensitively Detecting Circulating Tumor DNA 5Park Systems Awarded the New Economy Magazine “Best Analytic Instrumentation Company 2014” 2Portage's Biohaven Announces Agreement with inVentiv Health 2Portage's Biohaven Announces Agreement with inVentiv Health 3National Oral Cancer Awareness Survey Reveals Greater Need for Education and Screening Tools for Oral Cancer Among U.S. Adults 2National Oral Cancer Awareness Survey Reveals Greater Need for Education and Screening Tools for Oral Cancer Among U.S. Adults 3National Oral Cancer Awareness Survey Reveals Greater Need for Education and Screening Tools for Oral Cancer Among U.S. Adults 4
... of our nation,s long-term clean-energy future, but the technology ... Japan,s recent Fukushima disaster. Indeed, many nations have called ... are operating safely. In the United States, ... percent of the electricity from emission-free sources, including renewable ...
... Mediabrands, IPG Media Lab and Affectiva today announced, ... results of the first annual Neuromarketing Awards. Utilizing ... record and measure viewers, tacit, non-verbal response to ... features are established and are then measured and ...
... ,   The randomised, ... efficacy and safety of,the monoclonal antibody rituximab (RTX) ... that in patients with,severe AAV a single course ... period of 18 months proved to be as ...
Cached Biology Technology:Berkeley scientists pioneer nanoscale nuclear materials testing capability 2The IPG Media Lab and Affectiva Announce Winners of First Annual Neuromarketing Awards 2The IPG Media Lab and Affectiva Announce Winners of First Annual Neuromarketing Awards 3ERA-EDTA Congress 2011: Late Breaking Clinical Trials I 2
... (Intein Mediated Purification with an Affinity Chitin-binding ... engineered protein splicing elements (termed inteins) to ... column (1-4) (Figures 1 and 2). This ... systems by its ability to separate a ...
... Analysis Note: The kit contains all ... convenient determination of NADPH-cytochrome c reductase activity ... purified microsomes [endoplastic reticulum (ER)]. It has ... tissues such as liver, kidney, brain, spleen, ...
... provides the reagents to efficiently differentiate ... myotubes. By efficiently promoting myogenic differentiation, ... in studies examining myogenesis, transcription factor ... muscle cell replacement therapy. By providing ...
... CHEMICON's Cell Transformation Detection Assay is an ... is considered the most stringent assay for ... this assay, cells (pre-treated with carcinogens or ... in soft agar medium for 21-28 days. ...
Biology Products: