Sunday, March 26, 2017
Contact us    |    Advertise    |   Help   RSS icon Twitter icon Facebook icon
    Home  ·  News  ·  Forum  ·  Stories  ·  Image Gallery  ·  Columns  ·  Encyclopedia  ·  Videos
Find: in

Frogs are capable of seeing color in the dark


Posted on Sunday, 5 March, 2017 | Comment icon 3 comments

Frogs and toads can see color in total darkness. Image Credit: CC BY-SA 2.5 Richard Bartz
Scientists have found that frogs and toads possess night vision superior to that of all other animals.
According to a new study by researchers from Lund University in Sweden, frogs and toads are actually the only animals capable of seeing color in total darkness.

In the case of most vertebrates (including humans), the eye features two special types of cells in the retina known as cones and rods. Cones enable us to see color but require a lot of light, so when it is dark the rods take over to provide us with limited (black and white) night vision.

Frogs and toads however have rods with two different sensitivities and scientists now believe that this enables them to distinguish colors even in complete and total darkness.

"It's amazing that these animals can actually see color in extreme darkness, down to the absolute threshold of the visual system," said Professor Almut Kelber. "These results were unexpected."

"We have previously shown moths and geckos are also able to see color in inferior light conditions compared to humans. However, frogs apparently have a unique ability to see color in the dark."

Source: Phys.org | Comments (3)

Tags: Frog, Toad, Night Vision


 
Recent comments on this story
Comment icon #1 Posted by Wickian on 5 March, 2017, 13:26
Neat, I know what I'm getting once gene therapy after birth becomes available to the public when I'm in my 90's.
Comment icon #2 Posted by Sundew on 6 March, 2017, 2:28
Nothing can see color, or anything for that matter, in total darkness. At least some minimal light must strike the object being viewed and be reflected to the eye of the viewer. Frogs and toads may be able to do this better in very low light than any animal, but they do need some minimal lighting to see an object, color or not.
Comment icon #3 Posted by pallidin on 6 March, 2017, 10:09
I agree. Perhaps the article should have made clear that: 1) Some ambient light, however low in intensity, is needed to see reflected color in the dark. Bioluminece excluded. 2) That the visual sensory biologics in frogs and toads have a color sensitivity inlow lightconditions just above biologic sensitivity... The lowest known in Nature. Great finding nonetheless!!


Please Login or Register to post a comment.


  On the forums
Forum posts:
Forum topics:
Members:

5870757
252361
166353

 
Four-legged chicken hatches out in Brazil
3-26-2017
Despite having two additional limbs, the young chick, which wasn't expected to live, is doing quite well.
Hair salon is offering snake neck massages
3-25-2017
The Haar Mode Team salon in Dresden is offering customers a rather unique type of massage service.
'Ghost' causes a stir aboard USS Lexington
3-25-2017
Visitors to a popular attraction in Corpus Christi, Texas came across something they did not expect.
Permian mass extinction 'could happen again'
3-25-2017
A catastrophic rise in temperature wiped out the vast majority of life on Earth 250 million years ago.
Featured book
 
By Guy Lyon Playfair
A look at the story of Peggy Hodgson and her four children who, between 1977 and 1979, were at the center of one of the most terrifying poltergeist cases ever documented.
Featured Videos
Gallery icon 
Most watched animal on YouTube
Posted 3-26-2017 | 0 comments
Maru the cat has accumulated more views than any other animal on the video sharing site.
 
ALMA's 100-ton antennas
Posted 3-25-2017 | 0 comments
A special vehicle is used to carry ALMA's ultra-heavy antennas in to place in the desert.
 
How do we find lost satellites ?
Posted 3-24-2017 | 0 comments
A look at the methods scientists use to locate spacecraft with which contact has been lost.
 
 View: More videos
 
Top   |  Home   |   Forum   |   News   |   Image Gallery   |  Columns   |   Encyclopedia   |   Videos   |   Polls
UM-X 10.7 Unexplained-Mysteries.com 2001-2017
Privacy Policy and Disclaimer   |   Cookies   |   Advertise   |   Contact   |   Help/FAQ