Navigation Links
Study shows lizard moms dress their children for success

clear why an "orange" social environment triggers this hormonal tweaking of the eggs.

"The females are responding to cues that predict something about the future environment, but we're not sure yet exactly what that is," Lancaster said. "Orange-throated neighbors may indicate a trend in the frequency of orange-throated lizards within the population or in the overall population density."

According to Sinervo, the density of the lizard population is probably a critical factor. At high densities, the aggressive orange-throated males are so busy fighting with other lizards that they are especially vulnerable to predators. As a result, the predators are likely to focus on them, giving a survival advantage to lizards with different patterns.

After Lancaster released the lizards from her breeding experiments into the wild, she found that the ones whose mothers had tweaked their back patterns had a clear survival advantage. The highest survival rates were seen in the induced progeny types--yellow-throated lizards of both sexes with barred backs, orange-throated males with striped backs, and blue-throated females with striped backs.

"The frequencies of yellow and orange were both increasing in the wild that year, so the females exposed to orange neighbors and yellow sires in the experiments had the most fit progeny," Lancaster said. "But under different environments, maybe the progeny that weren't tweaked would have the highest fitness. If these same estradiol-induced types had the highest survival rates in all years, there would be no need for the females to respond to their social environment--they would just always give their eggs estradiol."

To understand these complex interactions more fully, the researchers plan to study the hormones and their effects in the field over several generations of lizards.


'"/>

Source:University of California - Santa Cruz


Page: 1 2 3 4

Related biology news :

1. Novel Asthma Study Shows Multiple Genetic Input Required; Single-gene Solution Shot Down
2. Emory Study Tests Bone Marrow Stem Cells to Improve Circulation in Legs
3. UCLA Study Shows One-Third of Drug Ads in Medical Journals Do Not Contain References Supporting Medical Claims
4. Study Demonstrates Gene Expression Microarrays are Comparable and Reproducible
5. Study Links Ebola Outbreaks To Animal Carcasses
6. Breakthrough Microarray-based Technology for the Study of Cancer
7. NYU Study Reveals How Brains Immune System Fights Viral Encephalitis
8. Study finds more than one-third of human genome regulated by RNA
9. Leukemia Drug Breakthrough Study In New England Journal Of Medicine
10. Study identifies predictors of HIV drug resistance in patients beginning triple therapy
11. New Study from Affymetrix Laboratories Points to Changing View of How Genome Works
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Study shows lizard moms dress their children for success

(Date:9/18/2014)... The ability to acquire and creatively manipulate spoken language ... over the past 6 million years of human evolution ... is the best candidate gene we now have," says ... LMU. In his efforts to understand the molecular biological ... step forward. The results of his latest study, undertaken ...
(Date:9/18/2014)... cheerful, happy-go-lucky characters, so you might expect that most ... In fact some dogs are distinctly more pessimistic than ... , "This research is exciting because it measures positive ... It offers researchers and dog owners an insight into ... Dr Melissa Starling, from the Faculty of Veterinary Science. ...
(Date:9/18/2014)... is it that when people are too stressed they ... from the Brain Mind Institute (BMI) at EPFL have ... relationship between chronic stress and the loss of social ... enzyme attacks a synaptic regulatory molecule in the brain. ... Nature Communications . , Carmen Sandi,s team went ...
Breaking Biology News(10 mins):Language evolution: Quicker on the uptake 2Language evolution: Quicker on the uptake 3Dogs can be pessimists too 2Dogs can be pessimists too 3How stress tears us apart 2
... new species of dinosaur unearthed in Mexico is giving scientists ... according to an international research team led by scientists from ... Utah. To date, the dinosaur record from Mexico has ... Museum of Natural History, Utahs designated natural history museum. ...
... U.S. Department of Homeland,Security (DHS) announced today ... international visitors arriving at San Francisco,International Airport ... the,department,s upgrade from two- to 10-fingerprint collection ... more accurately and,efficiently establishing and verifying visitors, ...
... at the Moores Cancer Center at University of California, San ... who were treated with a gene therapy protocol began making ... will be published on line the week of February 11-15 ... Academy of Science. Researchers led by Thomas J. Kipps, ...
Cached Biology News:New dinosaur from Mexico offers insights into ancient life on West America 2New dinosaur from Mexico offers insights into ancient life on West America 3New dinosaur from Mexico offers insights into ancient life on West America 4New dinosaur from Mexico offers insights into ancient life on West America 5New dinosaur from Mexico offers insights into ancient life on West America 6DHS Begins Collecting 10 Fingerprints From International Visitors at San Francisco International Airport 2Gene therapy protocol at UCSD activates immune system in patients with leukemia 2
(Date:9/19/2014)... rather than electricity, to move data would consume ... a growing concern as chips, transistor counts rise. ... circuits light emitters, modulators, and detectors ... light source for optical chips is molybdenum disulfide ... as a single, atom-thick layer. Other experimental on-chip ...
(Date:9/19/2014)... , Sept. 19, 2014 Pfenex Inc. ... the development of high-value and difficult to manufacture proteins ... presenting at the 21 st Annual NewsMakers in ... . Bertrand Liang , chief executive officer ... development programs and business strategy on Friday, September 26, ...
(Date:9/19/2014)... , September 19, 2014 ... 53rd European Society for Paediatric Endocrinology (ESPE) Meeting  ... science and medical research in the field of growth  ... KGaA, Darmstadt, Germany , today announced ... (GGI) for 2014. The awards were announced during a ...
(Date:9/18/2014)... Sept. 18, 2014 /PRNewswire-iReach/ -- DeepResearchReports.com adds "2014 ... Acid Industry" and "2014 Deep Research Report on ... its research database. Photo - ... Report on Global and China Acetic Acid Industry" ... China and Global Acetic ...
Breaking Biology Technology:Toward optical chips 2Toward optical chips 3Pfenex to Present at Upcoming Industry Conference on September 26 2EMD Serono Awards Grant for Growth Innovation (GGI) for the First Time 2EMD Serono Awards Grant for Growth Innovation (GGI) for the First Time 3Acetic Acid Market & Sodium Stannate Industry (China, Global) Research Report 2Acetic Acid Market & Sodium Stannate Industry (China, Global) Research Report 3Acetic Acid Market & Sodium Stannate Industry (China, Global) Research Report 4
... are subject to a wide array of federal government ... report published by the nonprofit American Botanical Council (ABC). ... dietary supplements that are granted to the U.S. Food ... (FTC), as well as other government agencies. ...
... TRIANGLE PARK, N.C., Feb. 6, 2012  Chimerix, Inc., ... announced positive results from CMX001 Study 201, a ... of cytomegalovirus (CMV) disease in hematopoietic stem cell ... Lipid-Antiviral-Conjugate completing Phase 2 clinical development for the ...
... Inc., a critical care company focused on developing and commercializing ... ill patients in the hospital and ICU settings, today announced ... the 14th Annual BIO CEO & Investor Conference.  Mr. Tasse,s ... 3:30 p.m. EST in the Park South of the Waldorf ...
Cached Biology Technology:Dietary Supplements Extensively Regulated, Say Authors of New Article 2Dietary Supplements Extensively Regulated, Say Authors of New Article 3Dietary Supplements Extensively Regulated, Say Authors of New Article 4Dietary Supplements Extensively Regulated, Say Authors of New Article 5Chimerix Antiviral Compound, CMX001, Meets CMV Phase 2 Primary Endpoint in Allogeneic Hematopoietic Stem Cell Transplant Recipients 2Chimerix Antiviral Compound, CMX001, Meets CMV Phase 2 Primary Endpoint in Allogeneic Hematopoietic Stem Cell Transplant Recipients 3Chimerix Antiviral Compound, CMX001, Meets CMV Phase 2 Primary Endpoint in Allogeneic Hematopoietic Stem Cell Transplant Recipients 4Chimerix Antiviral Compound, CMX001, Meets CMV Phase 2 Primary Endpoint in Allogeneic Hematopoietic Stem Cell Transplant Recipients 5Ikaria® to Present at 14th Annual BIO CEO & Investor Conference 2
... of a class of proteins who function to ... S plays an integral role in proofreading the ... excision repair and in preventing chromosomal recombination between ... DNA specifically at base pair mismatches and small ...
TGase3 (S-20)...
... the industrys first PCI Express image acquisition ... acquire images at the highest speeds, resolutions, ... cameras to perform demanding imaging applications such ... analysis, and advanced motion tracking. In ...
Simple operation and an easy-to-read LCD display characterize our Classic Light balances. * Taring range 0...1510 g...
Biology Products: