Navigation Links
Female lizard turns the table: Why exaggerated coloration makes her a good mate
Date:1/26/2011

ay produce higher-quality offspring, in part because their eggs contain more antioxidants," says Weiss.

Weiss, and collaborators Eileen Kennedy at University of Puget Sound, Rebecca Safran at University of Colorado at Boulder, and Kevin McGraw at Arizona State University, report that the coloration in the female striped plateau lizard probably serves as a sexual signal attractive to males. In evolutionary terms this suggests that more colourful females produce healthier eggs and attract more and/or higher-quality male mates, ultimately producing high-quality offspring.

The research is the first example of a positive relationship between female ornamentation and yolk antioxidants in reptiles. It contributes to an understanding of the evolution of female ornaments and what role they may play. Female ornaments are less common than male ornaments in the animal kingdom, but they do occur, often as a weak expression of the male's typical colour. There has been little empirical examination of this phenomenon until recently. Further research into pterins may explore whether these compounds as with carotenoids do extract some cost from the mother or egg.


'/>"/>

Contact: Dr. Stacey Weiss
sweiss@pugetsound.edu
253-879-2744
Wiley-Blackwell
Source:Eurekalert

Page: 1 2

Related biology news :

1. Young female chimpanzees appear to treat sticks as dolls
2. Differences in brain development between males and females may hold clues to mental health disorders
3. Vet meds big shift to more women, fewer men driven by falling barriers, more female grads
4. Egg meets sperm: The female side of the story
5. Female fish flaunt fins to attract a mate
6. Female marine snails trick amorous males
7. Rice sociologist finds male scientists regret parenthood decisions more than female counterparts
8. Male antelopes trick females into extra sex opportunities
9. Male antelopes deceive females to increase their chances of mating
10. Male or female? In flies, some cells cant tell
11. Hormonal contraceptives associated with higher risk of female sexual dysfunction
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/20/2015)... 2015  Acuity Market Intelligence,s latest research "The ... Commerce and Privacy" forecasts that between 2014 and ... be downloaded to smart mobile devices by 2.2 ... is projected to generate more than $67.9 billion ... forecast period.    "Biometrics is at ...
(Date:7/13/2015)... 13, 2015 NXT-ID, Inc. (NASDAQ: NXTD ... company focused on the growing mobile commerce market, ... 62/188684 for BEHAVIORAL-DIRECTED AUTHENTIATION METHOD AND ... and secure method to make payments.  With this ... introduced with its groundbreaking voice-direct payment patent application, ...
(Date:7/9/2015)... DUBLIN , July 07, 2015 ... has announced the addition of the "Biometrics ... and Forecasts 2015-2020" report to their offering. ... a major contributor to this growth and the ... US$5.5 billion in revenue for companies involved in ...
Breaking Biology News(10 mins):Biometrics on Smart Mobile Devices to Redefine Digital Identity with 12.9 Billion Biometric App Downloads between 2014 and 2020 2NXT-ID Patents Behavior-Directed Payments 2NXT-ID Patents Behavior-Directed Payments 3NXT-ID Patents Behavior-Directed Payments 4Global Banking Biometrics Market 2015-2020 - Market & Technology Analysis, Adoption Strategies and Forecasts 2Global Banking Biometrics Market 2015-2020 - Market & Technology Analysis, Adoption Strategies and Forecasts 3
... line all the cavities and free,surfaces of the body, ... in the body organs. The organized structure of normal ... cancer, according to a,study by University of Helsinki scientists. ... the Proceedings of the National Academy of Sciences,(PNAS). ...
... have designed a nanoscale system to observe and ... By combining microfabricated cantilevers and magnetic ... study showed that cells respond to outside forces ... and their environment. The study also revealed that ...
... discovered why a bacterial lung infection is so lethal ... authorities had thought, according to research published August 23 ... first time that a toxin released by bacteria causes ... pneumonia. It is the bleeding, the authors argue, not ...
Cached Biology News:Cells united against cancer 2Bioengineers at University of Pennsylvania devise nanoscale system to measure cellular forces 2Bleeding, not inflammation, is major cause of early lung infection death 2Bleeding, not inflammation, is major cause of early lung infection death 3
(Date:7/29/2015)... ... July 29, 2015 , ... ... its GHS Label Guide . To align chemical container labeling with OSHA’s ... includes explanations of label components, an example of an accurate label, and pictogram ...
(Date:7/29/2015)... 29, 2015  Therapath Neuropathology ( www.Therapath.com ), ... with VA and Military Medical centers both domestically ... (ENFD) and Sweat Gland Nerve Fiber Density (SGNFD) ... https://therapath.com/skin ). Demonstration of a ... on punch skin biopsy is a highly sensitive ...
(Date:7/29/2015)... 2015  Indivior PLC (LON: INDV) today announced that ... was accepted and received Priority Review by the U.S. ... opioid overdose. This naloxone nasal spray comes as a ... absorption into the nasal mucosa. 1 The device ... may be better equipped to help an opioid overdose ...
(Date:7/29/2015)... 29, 2015 /PRNewswire/ - RepliCel Life Sciences Inc. (OTCQB: ... company, is pleased to announce that the final design ... been locked.  Prototypes for industrial and regulatory testing ... application for CE mark clearance to market the ... 2016. (Photo: http://photos.prnewswire.com/prnh/20150729/248373 )  ...
Breaking Biology Technology:Brady Announces a New GHS Label Guide 2Neuropathology services for VA and Military health systems 2Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 2Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 3Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 4Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 5RepliCel Life Sciences Unveils Innovative Dermal Injector Prototype 2RepliCel Life Sciences Unveils Innovative Dermal Injector Prototype 3RepliCel Life Sciences Unveils Innovative Dermal Injector Prototype 4RepliCel Life Sciences Unveils Innovative Dermal Injector Prototype 5
... PALO ALTO, Calif., Sept. 19 Telik, Inc.,(Nasdaq: ... corporate,overview at the UBS Global Life Sciences Conference in ... p.m. Eastern time (9:30 a.m. Pacific,time). Telik,s presentation will ... the Telik website, http://www.telik.com, through October 3,2007. ...
... 19 NPS,Pharmaceuticals, Inc. (Nasdaq: NPSP ) ... Office of Orphan Products Development has granted,orphan drug ... for the treatment of hypoparathyroidism, a rare deficiency ... therapy. Hypoparathyroidism afflicts approximately 65,000 people in ...
... (Nasdaq: SGMO ) announced today that Edward Lanphier,Sangamo,s ... on,the progress of Sangamo,s ZFP Therapeutic development programs and ... (ET) on Wednesday,September 26, 2007 at the UBS 2007 ... will be webcast live and may be accessed via ...
Cached Biology Technology:PREOS(R) Granted U.S. Orphan Drug Status for Treatment of Hypoparathyroidism 2PREOS(R) Granted U.S. Orphan Drug Status for Treatment of Hypoparathyroidism 3Sangamo BioSciences to Present at the UBS Global Life Sciences Conference 2
The VersArray hybridization chamber is used for manual (coverslip) hybridization of microarrays. The chamber accommodates 2 slides and is watertight to allow incubation of slides in a water bath. Dim...
... The Eclipse is a state-of-the-art separation ... Fractionation (AFFF) technique. The Eclipse integrates easily ... DAWN, miniDAWN Tristar, as well as the ... size and molar mass distributions of the ...
Monoclonal antibodies conjugated with rhodamine...
... Moticam 2300 camera (MC2300) attaches to virtually ... trinocular port. Included in the standard package, ... software offers quick and accurate image capture, ... for examination or documentation purposes. The MC2300s ...
Biology Products: