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Characteristic tetrapod musculoskeletal limb phenotype emerged more than 400 MYA in basal lobe-finned fishes

Overview of attention for article published in Scientific Reports, November 2016
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  • In the top 5% of all research outputs scored by Altmetric
  • High Attention Score compared to outputs of the same age (95th percentile)
  • High Attention Score compared to outputs of the same age and source (92nd percentile)

Mentioned by

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2 blogs
twitter
54 tweeters
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5 Facebook pages

Readers on

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17 Mendeley
Title
Characteristic tetrapod musculoskeletal limb phenotype emerged more than 400 MYA in basal lobe-finned fishes
Published in
Scientific Reports, November 2016
DOI 10.1038/srep37592
Pubmed ID
Authors

Rui Diogo, Peter Johnston, Julia L. Molnar, Borja Esteve-Altava, Diogo, Rui, Johnston, Peter, Molnar, Julia L, Esteve-Altava, Borja

Abstract

Previous accounts of the origin of tetrapod limbs have postulated a relatively sudden change, after the split between extant lobe-finned fish and tetrapods, from a very simple fin phenotype with only two muscles to the highly complex tetrapod condition. The evolutionary changes that led to the muscular anatomy of tetrapod limbs have therefore remained relatively unexplored. We performed dissections, histological sections, and MRI scans of the closest living relatives of tetrapods: coelacanths and lungfish. Combined with previous comparative, developmental and paleontological information, our findings suggest that the characteristic tetrapod musculoskeletal limb phenotype was already present in the Silurian last common ancestor of extant sarcopterygians, with the exception of the autopod (hand/foot) structures, which have no clear correspondence with fish structures. Remarkably, the two major steps in this long process - leading to the ancestral fin anatomy of extant sarcopterygians and limb anatomy of extant tetrapods, respectively - occurred at the same nodes as the two major similarity bottlenecks that led to the striking derived myological similarity between the pectoral and pelvic appendages within each taxon. Our identification of probable homologies between appendicular muscles of sarcopterygian fish and tetrapods will allow more detailed reconstructions of muscle anatomy in early tetrapods and their relatives.

Twitter Demographics

The data shown below were collected from the profiles of 54 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 17 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United Kingdom 1 6%
Canada 1 6%
Unknown 15 88%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 7 41%
Researcher 5 29%
Student > Master 2 12%
Other 1 6%
Student > Ph. D. Student 1 6%
Other 1 6%
Readers by discipline Count As %
Agricultural and Biological Sciences 10 59%
Earth and Planetary Sciences 2 12%
Environmental Science 1 6%
Biochemistry, Genetics and Molecular Biology 1 6%
Social Sciences 1 6%
Other 2 12%

Attention Score in Context

This research output has an Altmetric Attention Score of 46. 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 11 February 2017.
All research outputs
#201,561
of 8,301,762 outputs
Outputs from Scientific Reports
#2,405
of 36,011 outputs
Outputs of similar age
#12,784
of 277,098 outputs
Outputs of similar age from Scientific Reports
#204
of 2,788 outputs
Altmetric has tracked 8,301,762 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 97th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 36,011 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 14.7. This one has done particularly well, scoring higher than 93% 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 277,098 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 95% of its contemporaries.
We're also able to compare this research output to 2,788 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 92% of its contemporaries.