Date: 12/08/2016 19:10:32
From: mollwollfumble
ID: 939608
Subject: Oldest vertebrate.

On the ABC3 news. Until recently, the oldest known vertebrate was the bowhead whale, age 211.

Just now, a Greenland shark has been found with an estimated age of a massive 390 years old. To be less precise 392+-120 years old from radiocarbon dating.

Abstract from Science Magazine at http://science.sciencemag.org/content/353/6300/702
Article from BBC news
Http://www.bbc.com/news/science-environment-37047168

the Greenland shark is a very, very soft shark – it has no hard body parts where growth layers are deposited.
“The Greenland shark’s eye lens is composed of a specialised material – and it contains proteins that are metabolically inert,” explained Mr Neilson.
“Which means after the proteins have been synthesised in the body, they are not renewed any more. So we can isolate the tissue that formed when the shark was a pup, and do radiocarbon dating.”
The team looked at 28 sharks, most of which had died after being caught in fishing nets as by-catch.
Using this technique, they established that the largest shark – a 5m-long female – was extremely ancient.

Reply Quote

Date: 12/08/2016 19:24:45
From: Bubblecar
ID: 939622
Subject: re: Oldest vertebrate.

mollwollfumble said:


On the ABC3 news. Until recently, the oldest known vertebrate was the bowhead whale, age 211.

Just now, a Greenland shark has been found with an estimated age of a massive 390 years old. To be less precise 392+-120 years old from radiocarbon dating.

Abstract from Science Magazine at http://science.sciencemag.org/content/353/6300/702
Article from BBC news
Http://www.bbc.com/news/science-environment-37047168

the Greenland shark is a very, very soft shark – it has no hard body parts where growth layers are deposited.
“The Greenland shark’s eye lens is composed of a specialised material – and it contains proteins that are metabolically inert,” explained Mr Neilson.
“Which means after the proteins have been synthesised in the body, they are not renewed any more. So we can isolate the tissue that formed when the shark was a pup, and do radiocarbon dating.”
The team looked at 28 sharks, most of which had died after being caught in fishing nets as by-catch.
Using this technique, they established that the largest shark – a 5m-long female – was extremely ancient.

Impressive.

Reply Quote

Date: 12/08/2016 19:27:35
From: AwesomeO
ID: 939626
Subject: re: Oldest vertebrate.

And just imagine hiw much longer it feels to the shark, down there in the dark.

Most of the deep sea creatures seem long lived, might be a side effect of a low nutrient lifestyle.

Reply Quote

Date: 12/08/2016 19:29:52
From: monkey skipper
ID: 939628
Subject: re: Oldest vertebrate.

AwesomeO said:


And just imagine hiw much longer it feels to the shark, down there in the dark.

Most of the deep sea creatures seem long lived, might be a side effect of a low nutrient lifestyle.

less predators and populations.

Reply Quote

Date: 12/08/2016 19:37:39
From: dv
ID: 939631
Subject: re: Oldest vertebrate.

So much for veganism eh

Reply Quote

Date: 12/08/2016 19:46:11
From: Ian
ID: 939634
Subject: re: Oldest vertebrate.

Reply Quote

Date: 12/08/2016 20:03:49
From: roughbarked
ID: 939665
Subject: re: Oldest vertebrate.

dv said:


So much for veganism eh

I don’t see the relevance.

Reply Quote

Date: 12/08/2016 20:23:26
From: dv
ID: 939692
Subject: re: Oldest vertebrate.

roughbarked said:


dv said:

So much for veganism eh

I don’t see the relevance.

Sharks are carnivores

Reply Quote

Date: 12/08/2016 20:29:29
From: roughbarked
ID: 939701
Subject: re: Oldest vertebrate.

dv said:


roughbarked said:

dv said:

So much for veganism eh

I don’t see the relevance.

Sharks are carnivores

So? They don’t eat vegetables either.

Reply Quote