Navigation Links
Mother birds increase progesterone to hatch females

ing the first meiosis is the mechanism in birds that manipulates the sex ratio of offspring," says Adkins-Regan.

"Researchers think that birds such as the Seychelles warbler may bias the sex of their offspring when, for example, their territory has plenty of food and the mother bird needs help in feeding the next generation," says Correa. Since males disperse, the mother bird may adaptively bias her offspring to female so that plenty of females from one generation will be available to help raise the next generation.

Although the finding is not of practical use in the near future for the poultry industry, Correa and Adkins-Regan say that understanding the basic mechanism of biasing sex ratios in birds could provide the foundation for learning how to manipulate the sex ratio of avian offspring in the future. Research in this area is just beginning, they note, because the molecular methods used to determine the sex of the eggs has only recently been made available.


'"/>

Source:Cornell University News Service


Page: 1 2

Related biology news :

1. Antiretroviral Therapy May Prevent HIV Transmission From Breastfeeding Mothers To Infants
2. Mother birds give a nutritional leg up to chicks with unattractive fathers
3. Mother knows best: Plant knowledge key to childhood health in remote Amazon
4. Migratory songbirds have a specialized night-vision brain area
5. The lopsided brain: Attention bias is shared by humans and birds
6. Bobbing birds do it for a reason
7. Overbearing colored light may reveal a second mechanism by which birds interpret magnetic signals
8. Industrial contaminants spread by seabirds in High Arctic, new Canadian study shows
9. Displaced songbirds navigate in the high Arctic
10. Oil spills and climate change double the mortality rate of British seabirds
11. Wild birds help to create human flu vaccine
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Mother birds increase progesterone hatch females

(Date:9/18/2014)... tiny strands of nucleic acid that contain instructions for ... data, our DNA is copied into RNA molecules, which ... in our cells. , Several years ago, scientists ... other known RNAs, this molecule is circular, and was ... has been known about how they are produced. Moreover, ...
(Date:9/18/2014)... from several disciplines will be celebrated tonight at the ... in improving the health of premature infants and in ... The researchers, whose work was supported by the National ... former Atomic Energy Commission, will be honored at a ... A bipartisan group of Members of Congress will be ...
(Date:9/18/2014)... the ideal animal in which to study the genes ... into tens of thousands of freshwater streams and lakes ... adapt to the new environment. , Breeding studies between ... up one of the genes that controls tooth number, ... regulation in a freshwater population is associated with a ...
Breaking Biology News(10 mins):Scientists find how mysterious 'circular RNA' is formed, claim muscular dystrophy link 23rd annual Golden Goose award ceremony honors 8 researchers; Unusual work had big results 2Counting fish teeth reveals regulatory DNA changes behind rapid evolution, adaptation 2Counting fish teeth reveals regulatory DNA changes behind rapid evolution, adaptation 3
... at the University of South Florida (USF) College of Public ... rodent model that the earliest form of malaria parasites can ... recover, following treatment with the antimalarial drug artesunate. The ... PLoS ONE , suggests that this early-stage dormancy phenomenon ...
... 25, 2011 DST Health Solutions ... Community Health Plan (CCHP) has implemented its PowerMHC® ... Suite to help meet new market requirements and enhance ... implement a nurse assist line service for CCHP, which ...
... is getting even harder to find in the Sierra Nevada, ... the U.S. Forest Service and Oregon State University. A new ... have dropped 60 percent since the 1980sa decrease that may ... which they live, researchers say. Their findings appeared in the ...
Cached Biology News:Dormant malaria parsites in red blood cells may contribute to treatment failure 2DST Health Solutions' Integrated Care Management Suite Improves Care Quality, Population Management of 31,000+ Member Health Plan 2DST Health Solutions' Integrated Care Management Suite Improves Care Quality, Population Management of 31,000+ Member Health Plan 3Fewer marten detections in California forest linked to decline in habitat 2
(Date:9/18/2014)... Sept. 18, 2014 Research and Markets ... and Chinese Stem Cell Industry Report, 2014-2017" report ... undifferentiated biological cells that can differentiate into specialized cells ... cells. Stem cell therapy can be applied to treatment ... disease), nervous system diseases, damage or lesion of liver, ...
(Date:9/18/2014)... , Sept. 18, 2014 Research and ... "Global Companion Diagnostics (Polymerase Chain Reaction, In-situ hybridization, Immunohistochemistry) ... to their offering. The global companion ... of 22.7% from 2014 to 2019. Factors such as ... adoption of companion diagnostics by the pharmaceutical industry, support ...
(Date:9/18/2014)... DIEGO , Sept. 18, 2014  MEI Pharma, Inc. ... the clinical development of novel therapies for cancer, announced today ... Executive Officer, will present at BioCentury,s NewsMakers in the ... 8:30 a.m. Eastern time from the Millennium Broadway Hotel & ... live webcast of the presentation can be accessed at ...
(Date:9/18/2014)... , Pennsylvanie, 18 septembre 2014 /PRNewswire/ ... en 1974, a été depuis ... compléter les évaluations cliniques traditionnelles par des ... Outcomes) et sur les impacts économiques des ... A cours d,une ...
Breaking Biology Technology:Global and Chinese Stem Cell Industry Report, 2014-2017 2Global and Chinese Stem Cell Industry Report, 2014-2017 3Global Companion Diagnostics (Polymerase Chain Reaction, In-situ hybridization, Immunohistochemistry) Market - Trends & Forecasts to 2019 2Global Companion Diagnostics (Polymerase Chain Reaction, In-situ hybridization, Immunohistochemistry) Market - Trends & Forecasts to 2019 3MEI Pharma To Present At BioCentury's NewsMakers Conference 2MEI Pharma To Present At BioCentury's NewsMakers Conference 31974 - 2014 - Mapi fĂȘte ses 40 ans 2
... -- Cingular Wireless will invest more than $300 ... Wisconsin -- including turning on-air 110 new cell sites, ... will spend $6.2 billion to enhance and expand its ... year, Cingular put into service 22 cell ...
... Attorney Joe Hildebrandt has been a part of ... some close at home and others in the financial ... the years, Hildebrandt told a legislative committee last week, ... state" that neither wants nor welcomes investors. , ,Lately, ...
... Wis. - Milton Silva-Craig has joined the board ... reported on Monday. , ,Neurognostics, which spun out of ... resonance imaging (fMRI) products and services , ,Silva-Craig is ... which he joined in March, 2001. Emageon ...
Cached Biology Technology:State's investment in early-stage businesses is changing perceptions 2State's investment in early-stage businesses is changing perceptions 3
... The first SpeedVac to have active, ... Explorer SpeedVac System is the worlds first, ... components can be stacked together to form ... valuable benchspace. It is also the first ...
... RC Standard Bio for vacuum concentrator/centrifugal ... molecular biology and biochemistry for rapid and ... systems can be expanded with pumps, different ... of rotors (eliminating sample loss by transfer), ...
... dedicated concentrator for efficient drying of small ... integrated system combines the SpeedVac™ Concentrator and ... automatic pump and rotor control, and dual ... heater time), makes the DNA120 indispensable in ...
... MB (For small quantities of solvents with ... vacuum concentrator/centrifugal evaporator systems respond to specific ... rapid and safe concentration of heat-labile samples. ... pumps, different of cold traps and a ...
Biology Products: