More Mercury Accumulates in Ocean Fish, Says Study

More Mercury Accumulates in Ocean Fish, Says Study

It has lately been discovered by a collaboration of researchers at the University of Michigan and University of Hawaii, Manoa that accretion of mercury in fish occurs at deeper depths.

As per the findings, the atmosphere carries the mercury before it falls on the ocean, forming the marine food web's part. Thereafter, the photochemical reactions cause the fish to accumulate more mercury at depth. Since, these reactions disintegrate organic mercury in the surface waters.

An earlier study had found that the predatory fish, including opah and swordfish, feeding at deeper depths, had high levels of mercury concentrations. In comparison to them, the fish feeding in waters close to the surface had lower mercury concentrations. These fish could include yellowfin tuna and mahi-mahi.

Hawaii University's Professor of geology and geophysics, Brian Popp, said that the information was known to be true. However, the reason was not known until the latest study.

It is being said that atmospheric mercury is transformed by bacteria in the oceans into organic monomethylmercury form. The same could collect in fish.

"We knew that organic and inorganic mercury dissolved in seawater has a nutrient-like profile, with lower concentrations at the surface and higher concentrations at depth", said PhD candidate in oceanography, Anela Choy.


FrenchTribune Specials

Google is reportedly set to launch its own smartphone by 2016-end

The Telegraph has disclosed in a recent report that tech biggie Google is working on its own Android smartphone; and apparently plans to launch the handset by the end of 2016.

The report, based on information shared by "senior sources" familiar with the developments at Google, has revealed that Google’s decision to launch its own...

Most Popular

Instagram now has more than 500 million active users

Facebook-owned photo-sharing app Instagram has surpassed...

Tumblr is launching new live video feature

Yahoo-owned blogging platform Tumblr is set to foray...

Peter Thiel remains on Facebook’s board

At social network Facebook’s annual shareholder meeting...

Apple ordered to stop iPhone 6s and iPhone 6s Plus sales in China

According to recent reports, a ruling by a Beijing...

Poll

Can Greece Come out of Economic Problems: