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

Overview of attention for article published in Science, August 2016
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About this Attention Score

  • In the top 5% of all research outputs scored by Altmetric
  • One of the highest-scoring outputs from this source (#9 of 42,915)
  • High Attention Score compared to outputs of the same age (99th percentile)
  • High Attention Score compared to outputs of the same age and source (99th percentile)

Readers on

mendeley
163 Mendeley
citeulike
1 CiteULike
Title
Eye lens radiocarbon reveals centuries of longevity in the Greenland shark (Somniosus microcephalus)
Published in
Science, August 2016
DOI 10.1126/science.aaf1703
Pubmed ID
Authors

Julius Nielsen, Rasmus B. Hedeholm, Jan Heinemeier, Peter G. Bushnell, Jørgen S. Christiansen, Jesper Olsen, Christopher Bronk Ramsey, Richard W. Brill, Malene Simon, Kirstine F. Steffensen, John F. Steffensen, Nielsen, Julius, Hedeholm, Rasmus B, Heinemeier, Jan, Bushnell, Peter G, Christiansen, Jørgen S, Olsen, Jesper, Ramsey, Christopher Bronk, Brill, Richard W, Simon, Malene, Steffensen, Kirstine F, Steffensen, John F, J. Nielsen, R. B. Hedeholm, J. Heinemeier, P. G. Bushnell, J. S. Christiansen, J. Olsen, C. B. Ramsey, R. W. Brill, M. Simon, K. F. Steffensen, J. F. Steffensen

Abstract

The Greenland shark (Somniosus microcephalus), an iconic species of the Arctic Seas, grows slowly and reaches >500 centimeters (cm) in total length, suggesting a life span well beyond those of other vertebrates. Radiocarbon dating of eye lens nuclei from 28 female Greenland sharks (81 to 502 cm in total length) revealed a life span of at least 272 years. Only the smallest sharks (220 cm or less) showed signs of the radiocarbon bomb pulse, a time marker of the early 1960s. The age ranges of prebomb sharks (reported as midpoint and extent of the 95.4% probability range) revealed the age at sexual maturity to be at least 156 ± 22 years, and the largest animal (502 cm) to be 392 ± 120 years old. Our results show that the Greenland shark is the longest-lived vertebrate known, and they raise concerns about species conservation.

Twitter Demographics

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Mendeley readers

The data shown below were compiled from readership statistics for 163 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Germany 2 1%
Brazil 2 1%
Japan 2 1%
United States 2 1%
Iceland 1 <1%
Portugal 1 <1%
Switzerland 1 <1%
Mexico 1 <1%
United Kingdom 1 <1%
Other 2 1%
Unknown 148 91%

Demographic breakdown

Readers by professional status Count As %
Researcher 42 26%
Student > Ph. D. Student 34 21%
Student > Master 31 19%
Student > Bachelor 13 8%
Student > Postgraduate 10 6%
Other 33 20%
Readers by discipline Count As %
Agricultural and Biological Sciences 90 55%
Environmental Science 24 15%
Earth and Planetary Sciences 13 8%
Biochemistry, Genetics and Molecular Biology 8 5%
Unspecified 6 4%
Other 22 13%

Attention Score in Context

This research output has an Altmetric Attention Score of 2672. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 17 December 2017.
All research outputs
#167
of 8,780,936 outputs
Outputs from Science
#9
of 42,915 outputs
Outputs of similar age
#9
of 261,407 outputs
Outputs of similar age from Science
#1
of 890 outputs
Altmetric has tracked 8,780,936 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 99th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 42,915 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 34.5. This one has done particularly well, scoring higher than 99% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 261,407 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 99% of its contemporaries.
We're also able to compare this research output to 890 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 99% of its contemporaries.