HOME >> BIOLOGY >> NEWS
Zebra finch males prefer females with exaggerated maternal traits

Researchers have demonstrated that learning about the appearance of their parents may give birds a preference for mates with exaggerated parental traits, rather than traits that more exactly match those of their parents. Such learned mate preferences may help drive the evolution of exaggerated traits and strong morphological differences between sexes phenomena seen frequently in birds and other animals. The findings are reported by Carel ten Cate, Machteld Verzijden and Eric Etman of Leiden University, and appear in the June 6th issue of Current Biology.

In most bird species, young individuals take their parents as a model for what their later sexual partner should look like. This is the process of sexual imprinting, made famous by the Nobel prizewinner Konrad Lorenz. Nonetheless, most birds prefer mates in which specific traits are exaggerated compared with those of their parents. Because learning about a specific stimulus usually leads to a preference for this familiar stimulus over an unfamiliar one, it has generally been assumed that imprinting itself could not give rise to preferences for novel, exaggerated traits.

In their new work, the researchers tested the sexual preferences of zebra finch males that were raised by white parents differing in beak color. For one group of males, the researchers painted the beak color of the mother orange and that of the father red; for another group, the mother got a red beak and the father an orange one. When the males reached adulthood, they were tested with females with a spectrum of beak colors ranging from extreme orange to extreme red. Males in both groups preferred females with beaks that were more extremely colored than their mothers' beaks. This "peak shift" effect is known from other learning processes in which animals learn to distinguish different stimuli, but the presence of this effect in the imprinting process has not been demonstrated previously. The outcome of the study shows that the skewed
'"/>

Contact: Heidi Hardman
hhardman@cell.com
617-397-2879
Cell Press
5-Jun-2006


Page: 1 2

Related biology news :

1. Zebrafish: Its not your parents lab rat
2. Zebra finches remember songs dad sang
3. Zebrafish and CHIP help untangle protein misfolding in brain disease
4. Zebrafish may hold key to improved cancer research
5. Zebrafish may hold key to understanding human nerve cell development
6. Zebrafish study yields observation of muscle formation
7. Zebrafish may offer researchers powerful new tool for studying innate immunity
8. Darwins famous finches and Venters marine microbes
9. Scientists find male finches frugal in their attempts to attract females
10. Females more prone to brain damage from alcohol abuse
11. CU study reveals why starling females cheat

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/30/2017)... , June 30, 2017 Today, ... developer and supplier of face and eye tracking ... Featured Product provider program. "Artificial ... innovative way to monitor a driver,s attentiveness levels ... from being able to detect fatigue and prevent ...
(Date:5/16/2017)... 16, 2017   Bridge Patient Portal , ... MD EMR Systems , an electronic medical ... GE, have established a partnership to build an ... the GE Centricityâ„¢ products, including Centricity Practice Solution ... These new integrations will allow healthcare delivery ...
(Date:4/17/2017)... NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or the "Company"), ... Report on Form 10-K on Thursday April 13, 2017 with the ... The ... section of the Company,s website at http://www.nxt-id.com  under "SEC Filings," ... 2016 Year Highlights: Acquisition of ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... Parks Associates announced today that Tom Kerber , Director ... , October 11 in Scottsdale, Arizona . Kerber will ... safety and security products impact the competitive landscape. ... Parks Associates: Smart Home Devices: Main Purchase Driver ... "The residential security market has experienced continued growth, and the introduction of ...
(Date:10/9/2017)... DIEGO , Oct. 9, 2017  BioTech ... biological mechanism by which its ProCell stem cell ... critical limb ischemia.  The Company, demonstrated that treatment ... amount of limbs saved as compared to standard ... the molecule HGF resulted in reduction of therapeutic ...
(Date:10/9/2017)... Texas (PRWEB) , ... October ... ... study published on October 5, 2017, in the medical journal, Epilepsia, Brain ... with the gold standard, video EEG, in detecting generalized tonic-clonic seizures (GTCS) ...
(Date:10/6/2017)... ... 06, 2017 , ... The HealthTech Venture Network (HTVN) is ... fourth annual Conference where founders, investors, innovative practitioners and collaborators are invited to ... showcasing early stage digital health and med tech companies. , This day-long event ...
Breaking Biology Technology:
Cached News: