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:5/27/2016)... New York, NY (PRWEB) , ... May 27, ... ... health care world, this installment is bolstered by inspiring human interest stories, courtesy ... to the developing trends and tech within the industry, from leading advocates and ...
(Date:5/27/2016)... , ... May 27, 2016 , ... ... name in the pharmaceutical, medical and food industries. Aside from its GMP accreditation, ... (SIC), providing proof of successfully certified products, services and staff. , Validation Center ...
(Date:5/26/2016)... ... May 26, 2016 , ... W.S. Badger Co. Inc ., the maker ... 2016 When Work Works Award for its use of effective workplace strategies to increase ... Works project administered by the Families and Work Institute (FWI) and the Society for ...
(Date:5/26/2016)... ... May 26, 2016 , ... Georgia State University ... specialty academic programs. , Answering to the increasing demand for curricular specializations, the ... law, and environmental and land use law. ,  , “The demand for lawyers ...
(Date:5/26/2016)... ... May 26, 2016 , ... The Woodlands at John Knox Village , ... of care for living and healing, celebrated its grand opening, today. The Woodlands at ... Home provided by Empowered Staff. , “This is an incredibly fulfilling time for John ...
Breaking Medicine News(10 mins):
(Date:5/24/2016)... Cirujanos holandeses han puesto en marcha una ... compartir sus mejores prácticas por el mundo y tratar ... Europa, África, Asia y Estados ... combina la transmisión en vivo con mensajería instantánea y ... "Imagine un médico de Medicines sans Frontieres ...
(Date:5/24/2016)... HENDERSON, Nev. , May 24, 2016  Diana ... painfully "eats" her organs from the inside out.  This ... her completely dependent on her children and grandchildren to ... of her wheelchair, Diana,s family cannot haul the wheelchair.  ... rides in the car, and Diana is left to ...
(Date:5/24/2016)... May 24, 2016 Celsion Corporation (NASDAQ: ... company, today provided an update on its ongoing ... trial combining GEN-1, the Company,s DNA-based immunotherapy, with ... newly-diagnosed patients with advanced ovarian cancer who will ... GEN-1 is an IL-12 DNA plasmid vector formulated ...
Breaking Medicine Technology: