Greenland shark: longest lived vertebrate?

DrLeftover

"I'm different. Let this not upset you" Paracelsus
Joined
Jul 4, 2016
Messages
10,529
Location
Illinois
(quoted material)

The Greenland shark, a big and slow-moving deep-ocean predator that prowls the frigid waters of the Arctic and North Atlantic, can claim the distinction of being the planet's longest-living vertebrate, with a lifespan perhaps reaching about 400 years.

Its extremely sluggish growth rate, about four-tenths of a inch (1 cm) per year, had already tipped off scientists that it lived a very long time, and research published on Thursday calculated the Greenland shark's lifespan for the first time.

Danish marine biologist Julius Nielsen said radiocarbon dating that analyzed the shark's eye lens found that the oldest of 28 sharks studied was likely about 392 years old, with 95 percent certainty of an age range between 272 and 512 years.

Females astoundingly did not reach sexual maturation until they were at least 134 years old, Nielsen said.

The Greenland shark, up to about 18 feet (5.5 meters) long, is among the largest carnivorous sharks.
(end quote)
http://www.reuters.com/article/us-science-shark-idUSKCN10M208



.
 
Top Bottom