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Deep-Sea Snailfish

Dragon
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Post by Dragon Sun May 16, 2021 8:12 am

A team of researchers in China has sequenced and assembled the high-quality reference genome for the Yap hadal snailfish, which was captured at a depth of 7,000 m in the Yap Trench in the western Pacific Ocean.

Hadal environments (depths below 6,000 m) are characterized by extremely high hydrostatic pressures, low temperatures, a scarce food supply, and little light.

Fish are the only vertebrates inhabiting the hadal zone, and hadal snailfishes have been found in at least five geographically separated marine trenches.


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Deep-Sea Snailfish 334pu7m

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Post by Dragon Sun May 16, 2021 8:14 am

Deep-Sea Snailfish Image_9657-Yap-Hadal-Snailfish
Image credit: Mu et al.

The Yap hadal snailfish.

The analysis of the genome revealed multiple adaptations for living in a cold, dark, high-pressure environment.

The scientists also found that the Yap hadal snailfish carries extra genes for DNA repair, which may help keep its genome intact under high pressures.


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Post by Dragon Sun May 16, 2021 8:16 am



Mariana snailfish feeding on the ocean floor

Mariana snailfish, the deepest-living fish in the world, are filmed in the Mariana Trench at depths of 7,000 to 8,145 meters.


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