Mystic Sisterhood

Would you like to react to this message? Create an account in a few clicks or log in to continue.
Mystic Sisterhood

Psychic, Paranormal & Natural Science Forums



Next Chat Event

Blind Cavefish Shed Light on the Dark Days of Mammalian Evolution 5nvklj





Blind Cavefish Shed Light on the Dark Days of Mammalian Evolution 9tpt39

..


Blind Cavefish Shed Light on the Dark Days of Mammalian Evolution

Dragon
Dragon
Senior Administrator
Senior Administrator


Posts : 7625
Points : 24512
Times User Thanked: : 1007
Join date : 2018-01-18

Blind Cavefish Shed Light on the Dark Days of Mammalian Evolution Empty Blind Cavefish Shed Light on the Dark Days of Mammalian Evolution

Post by Dragon Sat Oct 13, 2018 11:17 pm

Like mammals, these cave-dwelling creatures have discarded a solar-powered system that repairs UV-damaged DNA

Pale, shrunken and blind, the Somalian cavefish lives a quiet life in the world’s most light-starved waters. With their ghastly pallor and no eyes to speak of, these pasty fish don’t seem to have much in common with mammals, but there’s far more to the humble cavefish than meets the eye.

Scientists reported yesterday in the journal Current Biology that cavefish could shed some much-needed light on a mysterious chapter of mammalian evolution: the loss of solar-powered DNA repair. Most organisms have mechanisms to repair their own DNA molecules activated by sunlight, but mammals lost the trait somewhere along the way—and so did the Somalian cavefish.

Continued...
Source


_________________
Blind Cavefish Shed Light on the Dark Days of Mammalian Evolution 334pu7m
Dragon
Dragon
Senior Administrator
Senior Administrator


Posts : 7625
Points : 24512
Times User Thanked: : 1007
Join date : 2018-01-18

Blind Cavefish Shed Light on the Dark Days of Mammalian Evolution Empty Re: Blind Cavefish Shed Light on the Dark Days of Mammalian Evolution

Post by Dragon Sat Oct 13, 2018 11:19 pm

Blind Cavefish Shed Light on the Dark Days of Mammalian Evolution Cyprinidae_-_phreatichthys_andruzzii
Image Credit: (Hectonichus / Wikimedia Commons)

Feast your eyes on the blind Somalian cavefish, which has—like mammals—mysteriously lost the ability to use light to fix damaged DNA.

Source / Image Courtesy


_________________
Blind Cavefish Shed Light on the Dark Days of Mammalian Evolution 334pu7m
Dragon
Dragon
Senior Administrator
Senior Administrator


Posts : 7625
Points : 24512
Times User Thanked: : 1007
Join date : 2018-01-18

Blind Cavefish Shed Light on the Dark Days of Mammalian Evolution Empty Re: Blind Cavefish Shed Light on the Dark Days of Mammalian Evolution

Post by Dragon Sat Oct 13, 2018 11:21 pm

Blind Cavefish Shed Light on the Dark Days of Mammalian Evolution 182361
Image Credit: (Luca Scapoli / University of Ferrara)

These blind Somalian cavefish are actually pretty easy on the eyes... even if they don’t have any themselves.

Source / Image Courtesy


_________________
Blind Cavefish Shed Light on the Dark Days of Mammalian Evolution 334pu7m
Dragon
Dragon
Senior Administrator
Senior Administrator


Posts : 7625
Points : 24512
Times User Thanked: : 1007
Join date : 2018-01-18

Blind Cavefish Shed Light on the Dark Days of Mammalian Evolution Empty Re: Blind Cavefish Shed Light on the Dark Days of Mammalian Evolution

Post by Dragon Sat Oct 13, 2018 11:22 pm



Deep underground, in submerged caves, there is no light. Because there is no light, there is almost nothing for animals to eat. Yet life survives here.

The top predator in these sunless ecosystems is a tiny blind cavefish, only a few inches long. These fish are extremely rare, only found in the dark recesses of caves.


_________________
Blind Cavefish Shed Light on the Dark Days of Mammalian Evolution 334pu7m

Sponsored content


Blind Cavefish Shed Light on the Dark Days of Mammalian Evolution Empty Re: Blind Cavefish Shed Light on the Dark Days of Mammalian Evolution

Post by Sponsored content


    Current date/time is Fri Dec 03, 2021 4:21 pm