Navigation Links
Pathway found that lets mosquitoes fatten up, slow down for winter
Date:4/24/2008

se.

On the other end of the diapause spectrum, the scientists disrupted the function of the FOXO gene in mosquitoes that already had entered a dormant state. Within four days, these mosquitoes stopped retaining accumulated fat, killing more than 80 percent of them within three weeks.

Diapause is critical to the survival of the species, as these mosquitoes hold onto their immature eggs through the winter and wait until spring to develop them to maturity and deposit them. Similarly, the West Nile virus appears to be carried within the female from one season to another. Though newly infected birds also could be responsible for the viruss emergence in a given year, it appears that propagation of the virus may be dependent on these mosquitoes survival, Denlinger said.

Though there is limited evidence so far, other research has suggested the insulin signaling pathway affects dormancy in the roundworm and fruit fly.

These are very different organisms with a very different evolutionary history yet theyre using this common pathway of insulin signaling to regulate their dormancy. So an important aspect of this is the suggestion that this might be a common pathway used by lots of organisms to regulate their dormancy period, Denlinger said.

Warmer temperatures are identified as the signal that brings mosquitoes out of their dormant state, he said. At this stage, they produce a hormone called juvenile hormone, which implies another shift in the insulin signaling pathway at the end of diapause that enables this hormone production.


'/>"/>
Contact: David Denlinger
Denlinger.1@osu.edu
614-292-8209
Ohio State University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Proteins that stop a major signaling pathway can also generate new proteins
2. Stem cells and cancer: cancer pathways that also control the adult stem cell population
3. Researcher discovers pathway plants use to fight back against pathogens
4. Newly defined signaling pathway could mean better biofuel sources
5. MIT applies engineering approach to studying biological pathways
6. Researchers reveal HIV peptides possible pathway into the cell
7. Paired microbes eliminate methane using sulfur pathway
8. Rong Li Lab reports protein interactions of MAP kinase signaling pathway
9. Salk scientists identify key nerve navigation pathway
10. Study identifies pathway required for normal reproductive development
11. Old developmental pathways spawn revolutionary evolutionary changes

Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/20/2009)...Mass., November 19, 2009 The estimated 4.6 millio... at risk of developing respiratory symptoms due to...uestionnaire study undertaken earlier this year by...ol of Veterinary Medicine. , The studywhich poll...d that 50 percent of individuals working in barns ...
(Date:11/20/2009)...s available in German . , In the current on...on , Dr. Stefanie Eyerich and Dr. Kilian Eyerich t...e London and Istituto Dermopatico dell,Immacolata ...t represents a milestone on the way to developing ...es such as psoriasis and allergic reactions and po...
(Date:11/20/2009)... In a new study, researchers report that a class ... a helpful, or harmful, effect on the heart, depen...hich appears in the journal Circulation Research ...pha- and beta-receptors on the heart muscle offer ...that target only the beta-receptors can actually u...
Breaking Biology News(10 mins):Barn personnel experience higher-than-average rates of respiratory symptoms 2Discovery of new type of immune cells regulating inflammation in chronic diseases 2Carvedilol shown to have unique characteristics among beta blockers 2New data from 10 year global flea monitoring program confirms imidacloprid remains highly effective 54458 1New data from 10 year global flea monitoring program confirms imidacloprid remains highly effective 54458 2Protein plays unexpected role protecting chromosome tips 54456 1Protein plays unexpected role protecting chromosome tips 54456 2Protein plays unexpected role protecting chromosome tips 54456 3Canadian scientists identify gene that makes water striders glide across water 9567 1
... Earth Institute at Columbia University have disco... Asian elephants in India is actually two genetica...ch appear in the current issue of the journal Anim...ons in conservation plans for the endangered eleph... , Prithiviraj Fernando, a post-doctoral researche...
...ares disability from acute stroke may be delivered...standard ?a potential advance needed to benefit mo... of South Florida found that human umbilical cord ...g a stroke greatly curbed the brain,s inflammatory...ulting in greatly improved recovery. The rats, inf...
...search project is coordinated from FinlandIn sprin...ork was establishedto investigate the causes and i... as from the social point of view. This EU-finance... sociological effects of sleep restriction" will l...Porkka-Heiskanen (Stenberg) MD, PhD, at theUnivers...
Other Biology News:Genetic analysis of Asian elephants in India reveals some surprises 2Cord blood cells may widen treatment window for stroke 2Do the Europeans turn ill sitting up so late? 2
(Date:11/19/2009)...9 Danish Prince Joachim inaugurate...lant in Kalundborg, Denmark, on Wednesday, Novembe... largest 2nd generation ethanol demonstration bior... in the plant,s innovative process for converting ...s the first to market with commercial enzymes for ...
(Date:11/19/2009)...ov. 19 Dr. Mate Hidvegi, inventor ...o a press release issued on November 17 by Biropha...king false and self-serving statements about its U...dvegi stated from his office in Budapest, Hungary:...mar does not apply to AveULTRA, www.aveultra.com...
(Date:11/19/2009)... NeoStem, Inc. (NYSE Ame...llowing letter to its shareholders, discussing the...ina Biopharmaceuticals Holdings, Inc. (CHBP), an i...People,s Republic of China. The merger gives NeoSt...aceutical Co. Ltd., CHBP,s primary operating subsi...
(Date:11/19/2009)...and WALTHAM, Mass., Nov. 19 Arling... find that the leading driver of antibiotic select...ctrum activity against gram-positive and gram-nega...at can cause nosocomial pneumonia, surveyed Europe...agents that provide appropriate coverage against c...
Breaking Biology Technology:DONG Energy and Inbicon Inaugurate One of the World's Largest Demo Plants for 2nd Generation Biofuel 2American BioSciences Rebuts Misleading Statements Made by Hungarian Competitor 2NeoStem Outlines to Shareholders Near-term and Long-term Business Strategies Following Acquisition of Chinese Pharmaceutical Company 2NeoStem Outlines to Shareholders Near-term and Long-term Business Strategies Following Acquisition of Chinese Pharmaceutical Company 3Broad-Spectrum Antibacterial Activity is the Most Important Driver of Antibiotic Selection for Nosocomial Pneumonia In Europe 2Broad-Spectrum Antibacterial Activity is the Most Important Driver of Antibiotic Selection for Nosocomial Pneumonia In Europe 3
...sionals and Addressing the Issues ..., April 4, 2008 Clinical laboratory,professionals...itiative to,raise international awareness of the r... health care and their vital contribution to impro... Are Vital(TM), sponsored by,Abbott (NYSE: ABT ),...
...8 at 8:30 a.m. EDT - Rec... sales increased 21.2% year-over-year to ... guidance: revenue of $360 million to $370 million... million, - Net beds served increased 21% year-ove... pharmacy operations center in Deerfield Beach, Fl...
...ASDAQ Stock Market, OAKLAND, Calif., April 3, 200...ion (WorldHeart or Corporation) announced,today th... fiscal year,ended December 31, 2007 contained a g...endent registered public accounting firm, Burr Pil...o comply with NASDAQ Marketplace Rule,4350(b)(1)(B...
Other Biology Technology:International Federation of Clinical Chemistry Forms Partnership With the Labs Are Vital(TM) Initiative 2International Federation of Clinical Chemistry Forms Partnership With the Labs Are Vital(TM) Initiative 3Chem Rx Corporation Reports Full Year 2007 Financial Results 2Chem Rx Corporation Reports Full Year 2007 Financial Results 3Chem Rx Corporation Reports Full Year 2007 Financial Results 4Chem Rx Corporation Reports Full Year 2007 Financial Results 5Chem Rx Corporation Reports Full Year 2007 Financial Results 6Chem Rx Corporation Reports Full Year 2007 Financial Results 7Chem Rx Corporation Reports Full Year 2007 Financial Results 8Chem Rx Corporation Reports Full Year 2007 Financial Results 9Chem Rx Corporation Reports Full Year 2007 Financial Results 10Chem Rx Corporation Reports Full Year 2007 Financial Results 11Chem Rx Corporation Reports Full Year 2007 Financial Results 12Chem Rx Corporation Reports Full Year 2007 Financial Results 13Chem Rx Corporation Reports Full Year 2007 Financial Results 14Chem Rx Corporation Reports Full Year 2007 Financial Results 15WorldHeart 10-KSB Audit Report Includes 'Going Concern' Qualification 2
Rabbit Anti-Streptococcus Enterotoxin C Polyclonal Antibody, Unconjugated from Abcam
Cultured Human Visceral (omental) preadipocytes from Zen-Bio, Inc.
Mouse Anti-Human Flavocytochrome b Monoclonal Antibody, FITC Conjugated, Clone 7D5 from MBL International
UltraClean Microbial DNA Isolation Kit from Mo Bio Laboratories, Inc.
Biology Products: