Iconocast Logo

Welcome To Iconocast

How to add a URL link from your web site to the Iconocast web sites

Virtual tour of Southern California

 

Recent News and Articles on the Keywords: 468 + queenbee + life  Related to the article below (Last Update: 8/5/2008)

Man Rescued After Truck Rollover
WLBT-TV, MS -
This morning, traffic was held up on Highway 468 just southwest of Whitfield as rescue workers scrambled to help a man trapped upside down in his truck. ...
Truck Goes Off Rankin County Bridge WAPT
Truck Lands Upside-Down in Ditch WLBT-TV
all 3 news articles »
Raymond man injured in Pearl wreck
Rankin Ledger, MS -
By Justin Fritscher Joseph Chism sustained a fractured rib when his Dodge Ram veered off Mississippi 468, where it hit a guard rail and then landed upside ...
School's Out: Sorting out feelings
Stockton Record, CA - Aug 4, 2008
San Joaquin County Behavioral Health Services (209-468-9370) can help young people apply for low-cost medical insurance that includes mental-health coverage ...
Migrant office marks 40 years Stockton Record
all 3 news articles »
24-hour blood banks coming in city
Times of India, India - Aug 1, 2008
The Cabinet Committee on Economic Affairs (CCEA) cleared the setting up of the blood banks at a cost of Rs 468 crore out of which Rs 228 crore will be used ...
Metro cities to get blood banks Economic Times
Setting up of four Metro Blood Banks as Centres of Excellence in ... Press Information Bureau (press release)
Government to set up four state-of-art blood banks Thaindian.com
DailyIndia.com
all 15 news articles »
Anadarko Announces Second-Quarter Results
WELT ONLINE, Germany -
... Average Number of Common Shares Outstanding - Basic 468 465 468 464 Average Number of Common Shares Outstanding - Diluted 471 467 471 466 Exploration ...APC - BOM:500312 - WAR:CFL

Gothamist
MTA Head Says Poor Conditions Are Here to Stay
Gothamist, NY - Aug 3, 2008
NYC Transit President Howard Roberts Jr. doesn't seem to have a very positive self-image when it comes to the 468 subway stations he governs over. ...
SUBWAY BOSS: IT WON'T IMPROVE New York Post
all 17 news articles »
Your weekly planner
Bucyrus Telegraph Forum,  United States -
For details, call Joel Sanchez at 419-468-7985 or to register to attend. New Life support group -- 7-8 pm, 1340 Cullen Ave. This group is for men and women ...
Reading party set at Galion library Lancaster Eagle Gazette
all 2 news articles »
Area golf calendar
Dallas Morning News, TX - Jul 30, 2008
1-3 ? TGA Stableford, Riverhill CC, Kerrville, 214-468-8942, www.txga.org MONDAY, AUG. 4 ? US Amateur qualifying, Great Southwest GC, Grand Prairie MONDAY, ...
Daingerfield teen wins boys state junior title Dallas Morning News
all 4 news articles »
HDFC first quarter profit rises 26 % to Rs. 468 cr.
Hindu, India - Jul 16, 2008
CHENNAI: Housing Development Finance Corporation (HDFC) has reported a 26 per cent increase in its net profit after tax at Rs. 468.11 crore for the first ...
HDFC Q1 net profit up 26% at Rs 468 cr Times of India
all 16 news articles »  BOM:500010
Cabinet communique
Israel Ministry of Foreign Affairs (press release), Israel -
... the release of five Palestinian prisoners who meet the criteria approved in Cabinet Decision 468, 6 July 2003 and Cabinet Decision 606, 27 July 2003. ...
Source: Google News

[PDF] HONEY BEE LAB, BATON ROUGE REPRINT LIST
AH No - American Bee Journal - ars.usda.gov
... Disappearing Disease ? II: Effects of Certain Protein Sources on Brood Rearing and
Length of Life in the ... The Instrumental Insemination of the Queen Bee. ...
-

Control of Sex and Sex-Limited Polymorphism in the Hymenoptera -
SE Flanders - Quarterly Review of Biology, 1946 - JSTOR
... individual), should be more strongly differentiated than queen bee and worker ... The
life history of Aphkllum avenae (Hal.) a braconid parasite of ... Nat., 74: 468-471 ...

[BOOK] Sexual Life in Ancient Greece
H Licht, P Brandt - 1975 - Greenwood Press

Pharmacologically Active Peptides and Proteins from Bee Venom -
PN Strong, JDF Wadsworth - Animal Toxins: Facts and Protocols, 2000 - books.google.com
... 49, 1459-1 468 14. ... Hugues et al.(1982) Life Sci ... Using a queen bee venom cDNA library,
clones with inserts coding for secapin precursors have been iso- lated and ...
-

[BOOK] THE GARDENER'S MAGAZINE -
JC LOUDON - 1839 - books.google.com
... as regards the Destruction of vegetable Life in the ... Coesey Hall' - - - - 25 On the
Queen Bee that leaves ... 468 Ingpen's Instructions for collecting, rearing, and ...

Social Insect Pheromones: Their Chemistry and Function -
MS BLUM, JM BRAND - Integrative and Comparative Biology, 1972 - Soc Integ Comp Biol
... The mandibular glands of the queen bee have also been demonstrated to be the source
of a second primer pheromone which works in concert with (?)-9-oxo-2 ...

[CITATION] Golden Cross Operations PTY. LTD.
W TANK
-

Forthcoming in Computers and Operations Research -
PVS Balakrishnan, R Gupta, VS Jacob - faculty.washington.edu
... best string in the current generation as one of the parents which is referred
to as the ?Queen bee?, while the other parent is ...
-

[PDF] IMPORT RISK ANALYSIS: HONEY BEE (Apis mellifera) GENETIC MATERIAL -
B Authority, N Zealand - biosecurity.govt.nz
... There is no record of ova (the mature reproductive cell while still within the queen
bee?s ovaries) being used for transfer of A. mellifera genetic material. ...

An investigation of mating and population maintenance strategies in hybrid genetic heuristics for … -
PV Balakrishnan, R Gupta, VS Jacob - Computers and Operations Research, 2006 - Elsevier
... and a second based on always choosing the best string in the current generation
as one of the parents which is referred to as the ?Queen bee?, while the ...
-

Source: Google Scholar
 

Researchers at Illinois explore queen bee longevity

Diana Yates, Life Sciences Editor
217-333-5802; diya@uiuc.edu

Released 5/8/07

CHAMPAIGN, Ill. — The queen honey bee is genetically identical to the workers in her hive, but she lives 10 times longer and – unlike her sterile sisters – remains reproductively viable throughout life. A study from the University of Illinois sheds new light on the molecular mechanisms that account for this divergence. The study appears in the online edition of the Proceedings of the National Academy of Sciences.

The research centers on the interplay of three factors known to have a role in reproduction, growth and/or longevity. The first, vitellogenin (Vg), is a yolk protein important to reproduction but which also has been found to contribute to longevity in worker bees. The second, juvenile hormone, contributes to growth and maturation. The third, an insulin-IGF-1 signaling pathway, regulates aging, fertility and other important biological processes in invertebrates and vertebrates.

The study explores these factors in queen honey bees. How, the researchers wanted to know, could the queen achieve such a long life compared with her sisters while also devoting so much energy to reproduction?

Article continues below and (thank you)
 


“Many times the way organisms achieve longevity is via a tradeoff with reproduction,” said entomology professor Gene Robinson, principal investigator on the study. “In general, life forms that postpone reproduction until later in life live longer. But the queen bee has her cake and eats it too. She’s an egg-laying machine. She lays 2,000 eggs a day and yet lives 10 times longer than individuals that stem from the same genome and yet do not reproduce.”

The researchers knew from studies of the fruit fly and nematode that the insulin-signaling pathway had a role in longevity. Down-regulation of insulin-IGF-1 signaling (IIS) in those species was associated with increases in longevity – but at the expense of fertility.

They also knew that manipulating fat body cells in the head of the fruit fly influenced longevity. Because Vg is synthesized in fat body cells in honey bees, the team decided to look at Vg expression in the head and thorax as well as the abdomen.

This led to an important discovery. Expression of Vg was high in the abdomen in the young queen and declined over time, but increased with age in the head and thorax. Old queens showed much higher Vg expression than young queens.

Worker bees had much lower levels of Vg expression than queens, and Vg in worker heads was also low compared with queens. Previous studies in workers had shown that Vg reduced oxidative stress in honey bees by scavenging free radicals that can lead to aging or illness. Not surprisingly, queens were more resistant to oxidative stress than workers.

Whether this is the actual mechanism by which queens achieve both fertility and long life remains to be seen, Robinson said. In any event, this study suggests that vitellogenin plays a vital role in queen bee longevity, he said, particularly since the honey bee lacks many antioxidants commonly found in other species.

“There are implications here (for other species) in the sense that here is an organism that is reproductively active and long-lived,” said Robinson, who is also affiliated with the Institute for Genomic Biology. “And we see novel and conserved factors that are part of a large regulatory network. The queen has her cake and eats it too. And humans want to know how that works.”

Editor’s note: To reach Gene Robinson, call 217-333-6843; e-mail: generobi@uiuc.edu.
 
 
 
Google
Web www.iconocast.com
 
 
Continue News With: News6 ; News7 ; News8 ; News9 ; News9A


ADVERTISEMENT

Iconocast is about learning and teaching without borders; we offer eMarketing, Internet Advertising, Internet Marketing, Search Engine Optimization, Search Engine Marketing, Online Branding, and eMarketing News Services.

 

Iconocast Home Page

 © 2002-2006

Keywords:

Contact Iconocast