Navigation Links
Color Vision Drove Primates to Develop Red Skin and Hair, Study Finds

You might call it a tale of 'monkey see, monkey do.' Researchers at Ohio University have found that after primates evolved the ability to see red, they began to develop red and orange skin and hair .

Humans, apes and Old World monkeys, such as macaques and leaf monkeys, all have trichromatic vision, which allows these primates to distinguish between blue, green and red colors. Primatologists have disagreed about whether this type of color vision initially evolved to help early primates forage for ripe fruit and young, red leaves among green foliage or evolved to help them select mates.

Now a new study published online this week in American Naturalist by Ohio University researchers Andr Fernandez and Molly Morris rules out an initial advantage for mating and suggests that red-color vision evolved for non-social purposes, possibly foraging. But once developed, trichromaticism drove the evolution of red skin and hair through sexual selection.

Fernandez, the studys lead author, first began to question the strict correlation of food choice and color vision while studying howler monkeys in Costa Rica. He recently compiled data on the color vision, social and sexual habits and red skin and pelage of 203 different primate species.

The researchers then used a phylogenetic tree representing the evolutionary relationships among all the primate species under study to test hypotheses about the order in which the traits of red color vision, gregariousness (highly social behavior) and red coloring evolved. By comparing the traits of individual species in this evolutionary context, Fernandez and Morris could statistically deduce the probability of their ancestors having the same traits, as well if any of the traits were correlated with one another.

They found that the species that could discern red and orange hues were more likely to develop red and orange skin and hair, as well as highly social habits that mak e it easier to visually compare mates. In fact, the more social the trichromats are, the more red coloring they show.

'Neuroscience research has found some evidence of a perceptual bias for more brilliant colors,' said Fernandez, an Ohio University doctoral student. 'So, it is reasonable for primates with trichromatic color vision to respond more when they see bright colors.'

So while foraging may have initially sparked red color vision, the new ability was likely 'recruited' for social purposes. 'It looks like red skin and hair became a sexual preference,' said Morris, a fish biologist who studies how physical traits such as coloring evolve through sexual selection. 'So while the benefits in terms of eating may not apply anymore, the (red-color) vision in some groups is now relevant in social terms.'


'"/>




Related medicine news :

1. Detecting Colorectal Cancer
2. Preventing Colorectal Cancer
3. Screening Test For Early Diagnosis Of Colorectal Cancer
4. Milk Found To Lower Colorectal-Cancer Risk By 12 %
5. New Treatment Option for Colorectal Cancer
6. Red Color Causes The Allergic Reaction To Strawberries
7. Alcohol Consumption A Threat To Colorectal Tumours
8. Alcohol Drinking Affects Risk Of Colorectal Tumours
9. Seeing Is Believing Does Not Hold Good For Color Perception
10. Women More Prone To Risk of Colorectal Cancer from Tobacco
11. Eat The Color and be healthy
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:10/13/2017)... QUEENS, N.Y (PRWEB) , ... October 13, 2017 , ... ... recently became a member of ElderCounsel, a national organization of elder law and special ... constantly changing laws and rules. It also provides a forum to network with elder ...
(Date:10/13/2017)... (PRWEB) , ... October 13, 2017 , ... The Visiting ... Day Market. Featuring a collection of specialty vendors and unique items from across the ... and quality-focused health and wellness services offered by the VNA. The boutique will ...
(Date:10/13/2017)... (PRWEB) , ... October 13, 2017 , ... Yisrayl Hawkins, ... week that explains one of the most popular and least understood books in the ... cryptic and puzzling descriptions that have baffled scholars for centuries. Many have tossed it ...
(Date:10/13/2017)... ... ... “The Journey: From the Mountains to the Mission Field”: the story of a missionary ... Journey: From the Mountains to the Mission Field” is the creation of published author, ... ages and currently teaches a class of ladies at her church, which she has ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... treating sleep apnea using cutting-edge Oventus O2Vent technology. As many as ... disorder characterized by frequent cessation in breathing. Oral appliances can offer significant relief ...
Breaking Medicine News(10 mins):
(Date:9/27/2017)... for their devotion to personalized service, SMP Pharmacy Solutions announces ... the South Florida Business Journal,s 50 Fastest-Growing Companies, and listed ... national specialty pharmacy has found its niche.  To that end, ... honored by SFBJ as the 2017 Power Leader in Health ... his award in October, Bardisa said of the three achievements, ...
(Date:9/25/2017)... 2017   Montrium , an industry leader ... the IQPC Trial Master Files & Inspection Readiness ... EastHORN Clinical Services has selected eTMF Connect ... management. EastHORN, a leading European contract research organization ... transparency to enable greater collaboration with sponsors, improve ...
(Date:9/23/2017)... , Sept. 22, 2017 Janssen Biotech, Inc. ... response letter from the U.S. Food and Drug Administration ... of sirukumab for the treatment of moderately to severely ... additional clinical data are needed to further evaluate the ... severely active RA. ...
Breaking Medicine Technology: