Navigation Links
Rapid growth in adolescence leads to fewer offspring, UC Riverside biologists find
Date:7/20/2010

RIVERSIDE, Calif. University of California, Riverside biologists working on guppies small freshwater fish that have been the subject of long-term studies report that rapid growth responses to increased food availability after a period of growth restriction early in life have repercussions in adulthood.

Based on their experiments, the biologists found that female guppies that grew rapidly as juveniles produced fewer offspring than usual.

Study results appear in the August issue of Ecology Letters.

"When food levels increase after a period of low availability, many organisms including humans undergo what is called 'catch-up' or compensatory growth," explained Sonya Auer, the first author of the research paper and a Ph.D. graduate student in the Department of Biology. "This accelerated growth response allows them to catch up, fully or in part, to the body size they would have achieved under more favorable food conditions.

"We found that female guppies that underwent compensatory growth as juveniles produced less offspring than would be expected for their body size relative to females that underwent normal growth as juveniles," she said. "In the ecological literature, however, theory and empirical research have assumed that juvenile compensatory growth has only a positive effect on reproduction being bigger is better."

"This study is of interest even for human biology," said David Reznick, a professor of biology and Auer's advisor, "because we want to know if there are any such long-term consequences for rapid growth and weight gain early in life."

Auer explained that low early food availability alone does not have negative effects on future reproductive success in guppies.

"The long-term costs to reproduct
'/>"/>

Contact: Iqbal Pittalwala
iqbal@ucr.edu
951-827-6050
University of California - Riverside
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Reproducing early and often is the key to rapid evolution in plants
2. Forsyth scientist receives major grant to support rapid, accurate, affordable test for tuberculosis
3. Columbia University scientist devises new way to more rapidly generate bone tissue
4. Scattered light rapidly detects tumor response to chemotherapy
5. Study finds hemlock trees dying rapidly, affecting forest carbon cycle
6. HudsonAlpha investigator develops rapid response swine flu test
7. Rapid approach to identify influenza A virus mutations and drug resistance developed
8. German Research Minister Schavan: Rapid knowledge transfer can safe lives
9. K-State host to workshop on rapid methods to detect microorganisms in food
10. Growing Demand for Rapid Screening and Detection Systems Pushes the European Maritime Security Market, Finds Frost & Sullivan
11. Trial of new treatment for advanced melanoma shows rapid shrinking of tumors
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Rapid growth in adolescence leads to fewer offspring, UC Riverside biologists find
(Date:7/25/2014)... link between autism and disrupted brain development is ... disease, and is largely unknown. However, thanks to ... (SFARI), George Washington University (GW) researcher Anthony-Samuel LaMantia, ... and in-depth answers to these key questions in ... professor of pharmacology and physiology at the GW ...
(Date:7/25/2014)... research at the University of Adelaide has opened the way ... to powdery mildew. , In Australia, annual barley production is ... Powdery mildew is one of the most important diseases of ... have discovered the composition of special growths on the cell ... fungus into the leaf. , The research, by the ARC ...
(Date:7/25/2014)... MOResearchers at the Stowers Institute for Medical Research ... pheromone receptors, and found pheromones crucial to triggering the ... of receptors helps a male mouse detect pheromones that ... of receptors lets him know if the female mouse ... pheromones are critical to trigger mating. Stowers, researchers believe ...
Breaking Biology News(10 mins):GW researcher receives grant to answer the how and why of autism during development 2New hope for powdery mildew resistant barley 2It takes two to court 2It takes two to court 3
... wife doesn,t feel good on the Pill. He,d like to have ... responsibility for contraception. But they want another child, so vasectomy is ... drops his electric car off for a quick charge, he pops ... minutes of ultrasound treatment, for 6 months of contraception. Sound ...
... to help assess the spread and impact of the Deepwater ... the request of U.S. disaster response agencies. As part ... instrumented research aircraft the Earth Resources-2 (ER-2) to the Gulf ... observations and conducting additional data processing to assist the National ...
... attempt to silence the biochemical conversations that disease-causing bacteria ... a study in ACS, monthly journal, Biomacromolecules , ... soak up the substances that bacteria produce and pass ... and colleagues point out that more and more disease-causing ...
Cached Biology News:No more pills: Male contraceptive takes new approach 2No more pills: Male contraceptive takes new approach 3No more pills: Male contraceptive takes new approach 4NASA deploys planes, targets satellites to aid in oil spill response 2NASA deploys planes, targets satellites to aid in oil spill response 3
(Date:7/24/2014)... group leader Yung-Eun Sung has announced that they ... nitrogen-doped graphenes which can be applied as high ... Yung-Eun Sung is both a group leader at ... Basic Science* (IBS) and a professor at the ... significance with regards to the development of relative ...
(Date:7/24/2014)... prefer to settle into equilibriuma state of unchanging ... realm of non-equilibrium conditions where new possibilities lie. ... phases, such as temperature fluctuations, freezing and melting, ... their body temperature, airplanes to fly, and the ... But even though these conditions exist naturally and ...
(Date:7/24/2014)... Your cell phone may stay charged ... storage capacity. , New research indicates that lithium-ion ... at Lawrence Livermore National Laboratory and ... components will perform as electrodes. , The growing ... for higher-performance batteries. Several key characteristics of lithium-ion ...
(Date:7/24/2014)... CA (PRWEB) July 24, 2014 Three ... be semi-finalists in Livestrong’s Big C Competition. Out of ... are each headed to the semi-final round. In this ... exclusive three-month accelerator program, complete with mentoring from thought-leaders ... , As part of the angelMD commitment to the ...
Breaking Biology Technology:New approach to form non-equilibrium structures 2Getting More Life out of Lithium-ion Batteries 23 angelMD Startups Make Livestrong Big C Semi-finals 2
... 16 /Xinhua-PRNewswire-FirstCall/ -- Pharmaxis (ASX: PXS;,Nasdaq: PXSL) today ... for its asthma management product, Aridol., "This ... Pharmaxis Chief,Executive Officer Dr Alan Robertson. "Korea is ... Aridol in Asia. There are an estimated 2.5 ...
... 16 /PRNewswire-FirstCall/ - Vasogen Inc.,(NASDAQ: VSGN ; TSX:VAS), ... year ended November 30, 2007. All dollar amounts ... At November 30, 2007, our cash and ... at November 30, 2006. The change in,our cash ...
... 16 Bristol-Myers Squibb,Company (NYSE: BMY ) will ... 2007 on Thursday, January 31. During a 10 a.m. ... financial information and will,address inquiries from investors and analysts., ... listen to a live,webcast of the call at ...
Cached Biology Technology:Pharmaxis' Aridol Gains First Asian Approval 2Vasogen Announces 2007 Year-End Results 2Vasogen Announces 2007 Year-End Results 3Vasogen Announces 2007 Year-End Results 4Vasogen Announces 2007 Year-End Results 5Vasogen Announces 2007 Year-End Results 6Vasogen Announces 2007 Year-End Results 7Vasogen Announces 2007 Year-End Results 8Vasogen Announces 2007 Year-End Results 9Vasogen Announces 2007 Year-End Results 10Vasogen Announces 2007 Year-End Results 11
RORgamma (S-14)...
... Sophions newly introduced QPatch HT is taking ... more powerful level. With its ability to generate ... HT is enabling new screening paradigms in ion ... clamping with the same high quality afforded by ...
... aptamer screening and binding optimization and built ... on-chip synthesis platform. These microarrays are available ... Microarray Service. Probe Content ... than 1500 known aptamer sequences. Add up ...
... provides a comprehensive epitope analysis service ... on Paraflo microfluidic chips for immunological ... This comprehensive service includes assistance with ... sample(s) provided by you, single or ...
Biology Products: