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Discovery of a 240 million year old nematode parasite egg in a cynodont coprolite sheds light on the early origin of pinworms in vertebrates

Overview of attention for article published in Parasites & Vectors, November 2014
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About this Attention Score

  • In the top 5% of all research outputs scored by Altmetric
  • Among the highest-scoring outputs from this source (#34 of 4,506)
  • High Attention Score compared to outputs of the same age (97th percentile)
  • High Attention Score compared to outputs of the same age and source (99th percentile)

Mentioned by

news
7 news outlets
twitter
6 tweeters
wikipedia
2 Wikipedia pages

Citations

dimensions_citation
31 Dimensions

Readers on

mendeley
38 Mendeley
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Title
Discovery of a 240 million year old nematode parasite egg in a cynodont coprolite sheds light on the early origin of pinworms in vertebrates
Published in
Parasites & Vectors, November 2014
DOI 10.1186/s13071-014-0486-6
Pubmed ID
Authors

Jean-Pierre Hugot, Scott L Gardner, Victor Borba, Priscilla Araujo, Daniela Leles, Átila Augusto Stock Da-Rosa, Juliana Dutra, Luiz Fernando Ferreira, Adauto Araújo

Abstract

BackgroundWe report the discovery of a nematode parasite egg (Nemata: Oxyurida) from a coprolite closely associated with the remains of several species of Cynodontia, dated to 240 million years old. This finding is particularly significant because this is the oldest record of an oxyurid nematode yet discovered, and because the cynodonts are considered a stem-group of the mammals.MethodsWe extracted material from a fully mineralized coprolite by both scraping the surface, and removing fragments from its interior with clean dental instruments used a single time. A single drop of glycerol from a new vial was added as a clearing reagent. Each slide was sealed with wax and examined with an optical microscope at 100× to 400× magnification.ResultsFrom one coprolite, 550 slides were examined; from 275 of these slides, sediment was examined that was scraped from the surface of the coprolite, and from the other 275 slides, material was examined that was extracted from the interior of the coprolite. All microscopic structures encountered were photographed, measured, and identified when possible.ConclusionsFrom the coprolite examined, we discovered an egg representing a new species of pinworm that, based on the egg structure, clearly places it in the family Heteroxynematidae. Nematodes of the order Oxyurida have very constrained life-histories, occurring only in animals that are not strictly carnivorous and also ingest large amounts of plant material. This fact enabled us to determine which species of cynodont, from several collected at the site in Brazil, are most likely the depositors of the coprolite, and therefore were the putative host of the parasite.

Twitter Demographics

The data shown below were collected from the profiles of 6 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 38 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
France 2 5%
United States 1 3%
Unknown 35 92%

Demographic breakdown

Readers by professional status Count As %
Researcher 7 18%
Student > Doctoral Student 6 16%
Student > Master 5 13%
Other 3 8%
Student > Ph. D. Student 3 8%
Other 7 18%
Unknown 7 18%
Readers by discipline Count As %
Agricultural and Biological Sciences 8 21%
Earth and Planetary Sciences 7 18%
Veterinary Science and Veterinary Medicine 4 11%
Medicine and Dentistry 3 8%
Biochemistry, Genetics and Molecular Biology 2 5%
Other 6 16%
Unknown 8 21%

Attention Score in Context

This research output has an Altmetric Attention Score of 60. 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 04 March 2020.
All research outputs
#417,891
of 17,145,811 outputs
Outputs from Parasites & Vectors
#34
of 4,506 outputs
Outputs of similar age
#7,455
of 313,508 outputs
Outputs of similar age from Parasites & Vectors
#2
of 219 outputs
Altmetric has tracked 17,145,811 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 4,506 research outputs from this source. They receive a mean Attention Score of 5.0. 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 313,508 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 97% of its contemporaries.
We're also able to compare this research output to 219 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.