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Groundbreaking Research Reveals Greenland Shark's Longevity and Unique Biology
The Greenland shark grows about one centimetre a year, does not reach sexual maturity until around age 150, and a specimen carbon-dated by Danish researchers in 2016 was estimated to be at least 272 years old, meaning it was already swimming the North Atlantic when Mozart was composing symphonies.
Image: Maketecheasier
Marine biologist Julius Nielsen's research has established that the Greenland shark, which grows about one centimeter per year, can live for centuries, with one specimen estimated to be 272 years old. This discovery sheds light on the species' slow growth, late sexual maturity at around 150 years, and unique DNA-repair mechanisms that contribute to its longevity.
- 01The Greenland shark is the longest-lived vertebrate, with one specimen carbon-dated to between 272 and 512 years.
- 02This species grows at a rate of approximately one centimeter per year and reaches sexual maturity around 150 years.
- 03Nielsen's eye-lens dating method revealed that female Greenland sharks may not reproduce until they are significantly older than previously thought.
- 04The shark's genome shows enhanced DNA-repair pathways, contributing to its longevity and resistance to diseases.
- 05The research opens new avenues in comparative gerontology, helping to understand aging processes in various species.
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Research led by marine biologist Julius Nielsen has revealed that the Greenland shark (Somniosus microcephalus) is the longest-lived vertebrate, with one specimen carbon-dated to between 272 and 512 years old. This groundbreaking study utilized a novel method involving the eye lens to determine the age of these elusive creatures, which grow about one centimeter per year. The findings indicate that female Greenland sharks do not reach sexual maturity until around 150 years, significantly impacting conservation strategies. Additionally, the study highlights the shark's unique DNA-repair mechanisms, which may explain its remarkable longevity and resistance to diseases. The research not only provides insights into the biology of the Greenland shark but also contributes to the broader field of comparative gerontology, enhancing our understanding of aging across species. This innovative approach could potentially be applied to other long-lived species, opening new avenues for research into aging and longevity.
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Understanding the Greenland shark's biology is crucial for conservation efforts, particularly regarding fishing regulations and species protection.
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