Eye lens radiocarbon reveals centuries of longevity in the Greenland shark (Somniosus microcephalus)

@article{Nielsen2016EyeLR,
  title={Eye lens radiocarbon reveals centuries of longevity in the Greenland shark (Somniosus microcephalus)},
  author={Julius Nielsen and Rasmus Hedeholm and Jan Heinemeier and Peter G Bushnell and J{\o}rgen Schou Christiansen and Jesper Olsen and Christopher Bronk Ramsey and Richard W Brill and M. Simon and Kirstine F. Steffensen and John F. Steffensen},
  journal={Science},
  year={2016},
  volume={353},
  pages={702 - 704}
}
Deep living for centuries We tend to think of vertebrates as living about as long as we do, give or take 50 to 100 years. Marine species are likely to be very long-lived, but determining their age is particularly difficult. Nielsen et al. used the pulse of carbon-14 produced by nuclear tests in the 1950s—specifically, its incorporation into the eye during development—to determine the age of Greenland sharks. This species is large yet slow-growing. The oldest of the animals that they sampled had… Expand
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References

SHOWING 1-10 OF 50 REFERENCES
Vertebral Bomb Radiocarbon Suggests Extreme Longevity in White Sharks
TLDR
The results dramatically extend the maximum age and longevity of white sharks compared to earlier studies, hint at possible sexual dimorphism in growth rates, and raise concerns that white shark populations are considerably more sensitive to human-induced mortality than previously thought. Expand
Bomb dating and age determination of large pelagic sharks
TLDR
The results indicate that porbeagle vertebrae recorded and preserved a bomb radiocarbon pulse in growth bands formed during the 1960s, and confirm the validity of por beagle vertebral growth band counts as accurate annual age indicators to an age of at least 26 years. Expand
Growth analysis and age validation of a deepwater Arctic fish, the Greenland halibut (Reinhardtius hippoglossoides)
The accuracy of age interpretations on a deep-sea, Arctic fish species, the Greenland halibut (Reinhardtius hippoglossoides) was tested using several age validation methods. Consistent annual growthExpand
Bomb radiocarbon dating calibrates beluga (Delphinapterus leucas) age estimates
The ages of many mammals are estimated by counting growth layers in tooth sections, yet validation of age estimation techniques using free-ranging mammals has been problematic. Contrary to age esti...
Movements of Arctic and northwest Atlantic Greenland sharks (Somniosus microcephalus) monitored with archival satellite pop-up tags suggest long-range migrations
Abstract Greenland sharks (Somniosus microcephalus) are large carnivorous sharks that appear to be widely distributed in Arctic seas and in deep, cold temperate waters. In order to examine theirExpand
Age under-estimation in New Zealand porbeagle sharks (Lamna nasus): is there an upper limit to ages that can be determined from shark vertebrae?
TLDR
The results suggest that older porbeagles were under-aged by as much as 50% from vertebral band counts, presumably because band width declined to a point where it became unresolvable, which has important implications for growth studies on other long-lived sharks. Expand
Age and growth estimates of bowhead whales (Balaena mysticetus) via aspartic acid racemization
TLDR
A total of 48 eye globes were collected and analyzed to estimate ages of bowhead whales using the aspartic acid racemization technique, and growth appears faster for females than males, and age at sexual maturity occurs at around 25 years of age. Expand
Bomb dating and age validation using the spines of spiny dogfish (Squalus acanthias)
TLDR
The results indicate that the dorsal spines of spiny dogfish, Squalus acanthias, recorded and preserved a bomb radiocarbon pulse in growth bands formed during the 1960s with a timing which was very similar to that of marine carbonates. Expand
Distribution and feeding ecology of the Greenland shark (Somniosus microcephalus) in Greenland waters
TLDR
The results of this work support the notion that the Greenland shark is an apex predator with the potential to influence trophic dynamics in the Arctic. Expand
Use of radiocarbon from nuclear fallout as a dated marker in the otoliths of haddock Melanogrammus aeglefinus
TLDR
The first preand post-bomb I4C chronology based only on young fish otoliths is reported, thus avoiding all assumptions concerning the age and dale of uptake into the otollth, and any requirement for reference coral chronologies. Expand
...
1
2
3
4
5
...