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Bowhead Whale: longest-living mammal on Earth

January 5, 2015 By Marlene R. Litten

bow-head-fish-longest-life

A new study says that a bowhead whale can live more than 200 years of life cycle. Researchers hope this whale can provide insight into how humans can lead a long and healthy life.

Researchers from the University of Liverpool have arranged the genome of the whale and compared it with other short-lived mammals.

They have found some unique genetic alterations is this species that include genetic alterations related to cell division, cancer, DNA repair and aging may have helped increase its longevity and avoid contracting diseases typically associated with old age.

Senior author Dr. João Pedro de Magalhães said in apress release “Our understanding of species’ differences in longevity is very poor, and thus our findings provide novel candidate genes for future studies. My view is that species evolved different ‘tricks’ to have a longer lifespan, and by discovering the ‘tricks’ used by the bowhead we may be able to apply those findings to humans in order to fight age-related diseases.”

It should be mentioned that this whale has about 1000 times more cells than humans do. According to the Scientists this natural mechanism is responsible for the animal’s cancer resistance.

In addition to that the metabolic rate of bowhead whale is far less than that in smaller mammals and boffin have found that changes in one specific gene involved in thermoregulation (UCP1) that may be related to metabolic differences in whale cells.

Bowheads are related to right whales, and like the right whale they are slow-moving filter feeders that subsist largely on zooplankton like copepods, euphausiids and mysids, the NOAA says. And not only are they the longest living mammals at up to 200 years old, but they are also one of the heaviest, reaching 100 tons – that’s second to only the blue whale. They are typically found in icy Arctic waters, though earlier this year one was found very far from home in Cape Cod Bay. There are thought to be between 7,000 and 10,000 of these animals alive today.

Filed Under: Science Tagged With: Bowhead whale, bowhead whale's genome sequenced, genome sequencing, humans, long life', mammals, study, thermoregulation

Riddle behind Ageing could be solved after the Genome Sequencing of the longest living mammal, the Bowhead Whale

January 5, 2015 By Marlene R. Litten

bow-headed-genome-sequencing

Scientists have recently completed the full genome sequencing of the longest living mammal on earth, the Bowhead whale which can live more than 200 years. This could help pave ways for better understanding of the ageing process, which is quite slow in this mammal’s case as discussed above.

Scientists have observed remarkable differences in the bowhead’s genes related to DNA repair, cancer, cell cycle and ageing process which could help them better understand the specie’s lifespan.

Lead researcher João Pedro de Magalhães from the University of Liverpool said: “This is the largest mammal whose genome has been sequenced and also amongst the first big whale species to be sequenced as well”.

“By identifying unique cell maintenance and repair processes, we would be able to identify what is the secret for living longer lives and we may also be able apply this knowledge to improve our own health and preserve human lives as well,” he further added.

These mammals who live longer than any other mammal are also one of the largest creatures as well. They can reach up to 18 meters long and are also one of the heaviest just behind their Blue Whale cousins. They also have a unique anti tumor response mechanism at the cell level which is far more efficient than ours.

Filed Under: Science Tagged With: Bowhead whale, bowhead whale live the longest, bowhead whale's genome sequenced, genome sequencing, João Pedro de Magalhães, University of Liverpool

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