HOME >> BIOLOGY >> NEWS
Study in Royal Society journal on holly as an indicator of climate change

ida, 140 Seventh Ave. South, ST. PETERSBURG, FLORIDA, 33701, United States

Genetic Diversity Predicts Pathogen Resistance and Cell-mediated Immunocompetence in House Finches by Ms DM Hawley, Dr. KV Sydenstricker, Dr GV Kollias and Professor AA Dhondt
Scientists have long suspected that genetic diversity influences individual health, but this idea had not been tested in an experimental setting where the playing field is leveled. We investigated whether house finches with less genetic variation become more severely diseased in response to a pathogen challenge. Finches with lower genetic variation showed more severe eye symptoms that are characteristic of infections from this naturally-occurring pathogen. The stronger symptoms may reflect compromised immunity: when we challenged birds with a T-cell stimulant, less genetically variable birds mounted weaker responses. Our study provides direct support that genetic variation impacts individual disease resistance and immunity.
Contact: Ms DM Hawley, Ecology and Evolutionary Biology, Cornell University, Corson Hall, ITHACA, NEW YORK, 14853, United States

No sex difference in yolk steroid concentrations of avian eggs at laying by Dr KM Pilz, Professor E Adkins-Regan and Dr H Schwabl
Bird eggs contain steroids of maternal origin. These maternal steroids affect offspring development, and have been hypothesised to influence offspring sex. However, previous studies of the sex-determination hypothesis have examined steroid levels in incubated eggs, which may not accurately reflect maternal steroid levels. We conducted the first study relating steroid concentrations in unincubated eggs with the embryonic sex of offspring, as determined by genetic sexing. Steroid concentrations of male and female eggs were not different in unincubated eggs, but were different in incubated eggs. Thus, maternal steroids do not appear to play a critical role in avian sex determination.
Contact
'"/>

Contact: Tim Watson
tim.watson@royalsoc.ac.uk
44-207-451-2508
Royal Society
28-Jun-2005


Page: 1 2 3 4 5 6 7 8

Related biology news :

1. Study begins to reveal clues to the cause and progression of sepsis
2. Study finds gender differences in renal and other genes contributing to blood pressure
3. Study suggests estrogen deficiency can lead to obesity-induced high blood pressure after menopause
4. Study: Sticking to the sand might not be such good, clean fun for beachgoers
5. Study points to new way to predict death risk from torn aorta
6. Study identifies new gene therapy tools for inherited blindness
7. Study finds contaminated water reaching Floridas offshore keys
8. Study sheds light on why humans walk on two legs
9. Study explains how pathogens evolve to escape detection
10. Study finds hereditary link to premenstrual depression
11. Study identifies energy efficiency as reason for evolution of upright walking

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/5/2017)... NEW YORK , April 5, 2017 ... security, is announcing that the server component of the ... is known for providing the end-to-end security architecture that ... customers. HYPR has already secured over 15 ... system makers including manufacturers of connected home product suites ...
(Date:3/30/2017)... 2017  On April 6-7, 2017, Sequencing.com will host ... hackathon at Microsoft,s headquarters in Redmond, ... on developing health and wellness apps that provide a ... Genome is the first hackathon for personal genomics ... companies in the genomics, tech and health industries are ...
(Date:3/28/2017)... 2017 The report "Video Surveillance ... Servers, Storage Devices), Software (Video Analytics, VMS), and Service ... Forecast to 2022", published by MarketsandMarkets, the market was ... projected to reach USD 75.64 Billion by 2022, at ... base year considered for the study is 2016 and ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... BioMedGPS ... the addition of its newest module, US Hemostats & Sealants. , SmartTRAK’s US ... absorbable hemostats, fibrin sealants, synthetic sealants and biologic sealants used in surgical applications. ...
(Date:10/11/2017)... ... October 11, 2017 , ... The CRISPR-Cas9 system ... experiments and avoiding the use of exogenous expression plasmids. The simplicity of programming ... systematic gain-of-function studies. , This complement to loss-of-function studies, such as with ...
(Date:10/11/2017)... 2017  VMS BioMarketing, a leading provider of patient support ... Nurse Educator (CNE) network, which will launch this week. The ... health care professionals to enhance the patient care experience by ... other health care professionals to help women who have been ... ...
(Date:10/11/2017)... ... 11, 2017 , ... Singh Biotechnology today announced that the ... its novel anti-STAT3 (Signal Transducer and Activator of Transcription 3) B VHH13 single ... the cell membrane and bind intracellular STAT3 and inhibit its function. Dysregulation of ...
Breaking Biology Technology:
Cached News: