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:8/20/2014)... a burning spiciness that is irresistible to some, but ... are using their findings to develop a new drug ... caused by inflammation or other problems. They reported their ... clinical trials, in ACS, Journal of Medicinal Chemistry ... ago, scientists had pegged a compound called capsaicin as ...
(Date:8/20/2014)... chairs, synthetic rugs and plastic bags could one day ... rather than petroleum, scientists are now reporting. The novel ... the world deal with its agricultural and plastic waste ... , Athanassia Athanassiou, Ilker S. Bayer and colleagues at ... popularity is constantly growing. In 2012, its production reached ...
(Date:8/20/2014)... A new gene therapy developed by researchers at ... shown to protect mice from a life-threatening heart condition ... new therapeutic avenue," said Yi Lai, Ph.D., the leading ... the MU School of Medicine,s Department of Molecular Microbiology ... we hope this could lead to a treatment for ...
Breaking Biology News(10 mins):Gene therapy protects mice from lethal heart condition, MU researchers find 2
... Using morphine to fight the pain associated with abdominal ... even tripling the amount of time it takes to ... the University of Colorado Boulder. The research team ... Grace, a postdoctoral research fellow, together with Erika Galer, ...
... from as many photons as possible is imperative. ... engineering researchers on a quest to boost the energy-absorption ... running up against limits set by the laws of ... of Pennsylvania and Drexel University have experimentally demonstrated a ...
... BURLINGTON, Mass. , Nov. 12, 2013  Decision Resources, ... for pharmaceutical and healthcare issues, finds that while most ... play a critical role in pharmaceutical development of chronic ... outside of oncology is building. The Strategic Insights report ...
Cached Biology News:Using morphine after abdominal surgery may prolong pain, CU-Boulder researchers find 2Penn and Drexel team demonstrates new paradigm for solar cell construction 2Penn and Drexel team demonstrates new paradigm for solar cell construction 3Penn and Drexel team demonstrates new paradigm for solar cell construction 4Penn and Drexel team demonstrates new paradigm for solar cell construction 5Use of Biomarkers in Clinical Trials for Drugs Outside of Oncology is Increasing 2
(Date:8/20/2014)... Toronto, Canada (PRWEB) August 20, 2014 ... wisdom that E&L studies should be performed late in ... system is known. But current regulatory trends suggest that, ... are on the rise. In recent years, multiple drug ... E&L packages or address specific questions during phase I/II. ...
(Date:8/20/2014)... August 20, 2014 GraphDB™ ... today including improvements to the enterprise replication cluster, ... for Lucene, SOLR and Elasticsearch. This release happens ... high performance triplestore – GraphDB™ was formerly known ... deploying the only mature enterprise resilient RDF triplestore ...
(Date:8/19/2014)... DANVILLE, Pa. , Aug. 19, 2014 ... C has been nominated for a Centers for Disease ... to addressing a major public health concern. ... Health System, is one of a team of researchers ... (CDC) Charles C. Shepard Science Award for Data Methods ...
(Date:8/19/2014)... (PRWEB) August 19, 2014 XenoTech ... fast and cost-effective metabolite production from bioactive small ... chemistry platform, the technology enables convenient and timely ... According to XenoTech’s Vice President of Commercial Operations, ... for assessing clinical risk can be measured directly ...
Breaking Biology Technology:Are Extractable and Leachables going Phase-Appropriate? New Webinar Hosted by Xtalks 2Ontotext Improves Its RDF Triplestore, GraphDB™ 6.0: Enterprise Resilience, Faster Loading Speeds and Connectors to Full-Text Search Engines Top the List of Enhancements 2Ontotext Improves Its RDF Triplestore, GraphDB™ 6.0: Enterprise Resilience, Faster Loading Speeds and Connectors to Full-Text Search Engines Top the List of Enhancements 3Ontotext Improves Its RDF Triplestore, GraphDB™ 6.0: Enterprise Resilience, Faster Loading Speeds and Connectors to Full-Text Search Engines Top the List of Enhancements 4Geisinger investigator nominated for federal award 2Geisinger investigator nominated for federal award 3Beyond Metabolite Identification, Testable Quantities Now Offered by XenoTech 2Beyond Metabolite Identification, Testable Quantities Now Offered by XenoTech 3
... Jan. 26 WellCentive, LLC,today announced that WellCentive ... Information Exchange) as its patient registry and disease,management ... use of WellCentive Registry, more than 1,000 my1HIE ... will be better able to,provide preventive care services ...
... Jan. 26 Sirion Therapeutics, Inc., a privately held ... Application (NDA) for ganciclovir ophthalmic gel, 0.15%, has been ... Administration (FDA). Sirion Therapeutics is seeking approval for ganciclovir ... caused by the herpes simplex virus. The FDA has ...
... YORK, Jan. 26 Netsmart Technologies, Inc., a ... health and human services organizations, today announced it ... the New York State Association of Alcoholism and ... company,s comprehensive education, online learning and learning management ...
Cached Biology Technology:my1HIE(sm) Implements WellCentive Registry 2my1HIE(sm) Implements WellCentive Registry 3Sirion Therapeutics New Drug Application for Ganciclovir is Accepted for Review by the FDA for the Treatment of Ocular Herpes 2Sirion Therapeutics New Drug Application for Ganciclovir is Accepted for Review by the FDA for the Treatment of Ocular Herpes 3Netsmart University Announces Partner Referral Agreement With New York Association of Alcohol and Substance Abuse Providers 2Netsmart University Announces Partner Referral Agreement With New York Association of Alcohol and Substance Abuse Providers 3
... kit for determining the absolute count of ... mobilized peripheral blood samples, and leukapheresis samples. ... nucleated cell count and a total CD45 ... for use in the BD Procount progenitor ...
... to Protein A and, until recently, no readily ... IgM purification. Standard methods for IgM purification generally ... effective for removing all of the major impurities ... Pierce has developed an easy-to-use affinity matrix ...
... compact and lightweight, the Moticam 2300 camera ... the eyepiece, eyetube, or trinocular port. Included ... use Plug-and-Play Images 2.0ML software offers quick ... tools to maximize resolution for examination or ...
... Merck KGaA. Physical form: Solution in 50% glycerol containing ... 2 , and 20 mM NaCl Preparation Unit Definition: ... acid-soluble oligonucleotides equivalent to a ΔA 260 of ... C (reaction volume 2.625 ml). Assay: SDS-PAGE ≥ ...
Biology Products: