Navigation Links
Faster development might have its costs
Date:1/24/2011

unique "scent of death". These chemicals are released back into the water during the next rains, when the pond fills up again. This apparently provides information to the newborn larvae on the expected water-holding capacity of their pond, and signals them to set a high developmental rate to avoid a similar fate.

While chemicals from previously desiccated larvae can inform as to possible drying of pools in a relatively short time, reducing water levels can serve as a more reliable predictor of imminent pond drying and risk of desiccation. In the second part of the study, the researchers manipulated the water-levels for both groups, to simulate actual drying or non-drying conditions. They found that, after a while, the larvae will adjust their initial rates of development according to the actual water levels of their ponds.

However, they also found that accelerated development carries costs: larvae that developed more quickly suffered greater rates of mortality. Larvae that falsely perceived the pond environment as long-lasting, and thus started life with a slow developmental rate, but then realized their misperception and compensated with significant acceleration, suffered the greatest rates of mortality. The physiological mechanisms underlying these costs are unknown, but are thought to involve both cellular causes such as oxidative damage from increased metabolic rates, and tissue-level causes such as overexploitation of undifferentiated stem cells or disrupted balance between the differentiation and growth of different tissues in the body. These physiological costs may also lead to increased vulnerability to environmental stresses other than drying, such as heat, disease and parasites, and might result in death.

According to Sadeh, these results are consistent with those of recent studies on the costs of acceleration in growth following starvation in various other organisms, including insects, fish, amphibians and mammals. He suggests that this ca
'/>"/>

Contact: Rachel Feldman
rfeldman@univ.haifa.ac.il
972-482-88722
University of Haifa
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Study finds fisheries management makes coral reefs grow faster
2. Major advance in MRI allows much faster brain scans
3. MGH researchers develop faster method of engineering zinc-finger nucleases
4. Faster water flow means greater diversity of invertebrate marine life
5. This faster-growing E. coli strains a good thing
6. Faster CARS, less damage: NIST chemical microscopy shows potential for cell diagnostics
7. Faster DNA analysis at room temperature
8. Synthetic bone graft recruits stem cells for faster bone healing
9. Faster Salmonella detection now possible with new technique
10. UCLA engineers develop faster method to detect bacterial contamination in coastal waters
11. Chubby birds get there faster
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Faster development might have its costs
(Date:6/17/2015)... Germany , June 17, 2015 ... Standard: QIA) today launched new Investigator ® STR assay ... the United States . The new genetic ... key genomic markers (short tandem repeats or STRs) for DNA ... evaluate the quality of DNA in each sample, a novel ...
(Date:6/16/2015)... -- With the increasing number and severity of data breaches ... recent compromise of Federal employee data from OPM,s ... government agencies. HYPR Corp. announced today that ... has been submitted for testing and approval of Federal ... tamper proofing. The proliferation of security ...
(Date:6/15/2015)... June 15, 2015 A new report ... reveals the majority of US consumers using mobile banking applications ... such as fingerprint and voiceprint, instead of having to prove ... to Telstra,s " Mobile Identity   -   The Fusion ... with smartphones now the primary channel used by Gen X ...
Breaking Biology News(10 mins):QIAGEN Launches New Genetic Fingerprinting Kits for U.S. Forensic Labs 2QIAGEN Launches New Genetic Fingerprinting Kits for U.S. Forensic Labs 3QIAGEN Launches New Genetic Fingerprinting Kits for U.S. Forensic Labs 4QIAGEN Launches New Genetic Fingerprinting Kits for U.S. Forensic Labs 5Government Ready Biometric Security Approaching as HYPR Corp. Files FIPS 140-2 Level 3 Validation for Its Proprietary Biometric Token 2Government Ready Biometric Security Approaching as HYPR Corp. Files FIPS 140-2 Level 3 Validation for Its Proprietary Biometric Token 3One in Four US Consumers Would Share Their DNA With Their Bank to Secure Financial and Personal Information, Telstra Report Finds 2One in Four US Consumers Would Share Their DNA With Their Bank to Secure Financial and Personal Information, Telstra Report Finds 3One in Four US Consumers Would Share Their DNA With Their Bank to Secure Financial and Personal Information, Telstra Report Finds 4
... 2008A prestigious group of physicians, nurses, and allied ... March 27-29, 2009 at the Williamsburg Lodge to ... novel diagnostic procedures, and innovative research advances that ... and registration information is available at www.bioconferences.com/wh ...
... be a new, reliable and affordable alternative energy source. A ... like a fish to turn potentially destructive vibrations in fluid ... VIVACE. A paper on it is published in the current ... Arctic Engineering . VIVACE is the first known device ...
... and strokes are treated quite separately from common cancers ... out to involve some of the same critical mechanisms ... to more effective therapies for both cancer and cardiovascular ... come together. The seeds were sown for closer cooperation ...
Cached Biology News:17th Annual Congress on Women's Health convenes 2'Fish technology' draws renewable energy from slow water currents 2'Fish technology' draws renewable energy from slow water currents 3Mechanisms of cardiovascular disease and cancer give clues to new therapies 2Mechanisms of cardiovascular disease and cancer give clues to new therapies 3
(Date:7/1/2015)... ... July 01, 2015 , ... A newly launched business plan ... lower the barriers to innovation in life sciences R&D. The Pistoia Alliance President’s Startup ... prizes of US$15,000 and a period of expert mentorship from a senior industry figure ...
(Date:7/1/2015)... Indianapolis, IN (PRWEB) , ... July 01, 2015 , ... ... the 2015 BIO International Convention in Philadelphia, PA. , The presentation took ... milestones and outlined the plans for the development of APX3330 for the treatment of ...
(Date:7/1/2015)... YORK , July 1, 2015  UCB, ... G ), a global leader in designing, transforming, ... Aecus Innovation Award in recognition of their close ... efficiencies in UCB,s global business services (GBS) finance ... service providers and clients that work together effectively ...
(Date:6/30/2015)... ... June 30, 2015 , ... ... to take part in the first half of “Integrative Biotechnology,” an applied biotechnology ... established in summer 2014, this course combines students from both universities and is ...
Breaking Biology Technology:Pistoia Alliance Launches Startup Challenge 2Pistoia Alliance Launches Startup Challenge 3Apex Therapeutics Presented Company Overview at This Year’s BIO International Convention in Philadelphia, PA 2UCB and Genpact Receive Aecus Innovation Award for Success in Global Business Services 2UCB and Genpact Receive Aecus Innovation Award for Success in Global Business Services 3UCB and Genpact Receive Aecus Innovation Award for Success in Global Business Services 4UCB and Genpact Receive Aecus Innovation Award for Success in Global Business Services 5Rivier University and Beijing City University Academic and Cultural Exchanges Begin 2
... (NYSE Alternext US: PIP), a biodefense company developing ... today that results from a Phase II study ... were presented at the 7th Annual ASM Biodefense ... Baltimore, MD, February 22-25, 2009. David P. Wright, ...
... Feb. 24 Eiger BioPharmaceuticals, Inc.,a start-up biotechnology ... $7.1 million in a Series A financing co-led ... were instrumental in the formation,of the company and ... the board of,directors by general partners Nina Kjellson ...
... biotech company in Madison, Wisconsin is so concerned about ... that they have volunteered to give away free bottles ... the incoming administration who has forgotten to pay taxes ... government employees in positions of responsibility have many important ...
Cached Biology Technology:PharmAthene Presents Data for SparVax(TM) and Valortim(R), a Novel Vaccine and Anti-Toxin for the Prevention and Treatment of Anthrax Infection at the 7th Annual ASM Biodefense Meeting 2PharmAthene Presents Data for SparVax(TM) and Valortim(R), a Novel Vaccine and Anti-Toxin for the Prevention and Treatment of Anthrax Infection at the 7th Annual ASM Biodefense Meeting 3PharmAthene Presents Data for SparVax(TM) and Valortim(R), a Novel Vaccine and Anti-Toxin for the Prevention and Treatment of Anthrax Infection at the 7th Annual ASM Biodefense Meeting 4PharmAthene Presents Data for SparVax(TM) and Valortim(R), a Novel Vaccine and Anti-Toxin for the Prevention and Treatment of Anthrax Infection at the 7th Annual ASM Biodefense Meeting 5PharmAthene Presents Data for SparVax(TM) and Valortim(R), a Novel Vaccine and Anti-Toxin for the Prevention and Treatment of Anthrax Infection at the 7th Annual ASM Biodefense Meeting 6PharmAthene Presents Data for SparVax(TM) and Valortim(R), a Novel Vaccine and Anti-Toxin for the Prevention and Treatment of Anthrax Infection at the 7th Annual ASM Biodefense Meeting 7Eiger BioPharmaceuticals Raises $7.1 Million 'A' Round 2Mental Stimulus Package: Government Officials who Forgot to Pay Taxes Will Receive Free Memory-boosting Supplement 2Mental Stimulus Package: Government Officials who Forgot to Pay Taxes Will Receive Free Memory-boosting Supplement 3
1, 2 or 8 PreMixes are included as part of the FailSafe™ PCR System....
activating transcription factor 4 (tax-responsive enhancer element B67),...
The Hybrid Hunter Yeast Two-Hybrid System uses the activation of reporter genes to indicate positive protein-protein interactions. Two reporters are used an auxotrophic marker and lacZ....
Request Info...
Biology Products: