Evidence map›Paper›PMID 28785033›Full record

ArticleScientific reports2017

Hybridization patterns in two contact zones of grass snakes reveal a new Central European snake species.

Carolin Kindler, Maxime Chèvre, Sylvain Ursenbacher, Wolfgang Böhme, Axel Hille, Daniel Jablonski, Melita Vamberger, Uwe Fritz

Abstract read
In one paragraph

Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed.

  1. Article
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  7. PeerJ · 2024
    Article
  8. Article
  9. Article
  10. Hybridization betweenBiology · 2022
    Article
  11. Article
  12. Article
  13. Article
  14. New Evidence on the Distribution of the Highly EndangeredAnimals : an open access journal from MDPI · 2021
    Article
  15. Review
  16. Article
  17. Article
  18. Article
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  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Carolin KindlerMuseum of Zoology (Museum für Tierkunde), Senckenberg Dresden, A. B. Meyer Building, 01109, Dresden, Germany.
Maxime ChèvreDepartment of Environmental Sciences, Section of Conservation Biology, University of Basel, 4056, Basel, Switzerland.
Sylvain UrsenbacherDepartment of Environmental Sciences, Section of Conservation Biology, University of Basel, 4056, Basel, Switzerland.
Wolfgang BöhmeZoologisches Forschungsmuseum Alexander Koenig, Adenauerallee 160, 53113, Bonn, Germany.
Axel HilleRosengarten 21, 33605, Bielefeld, Germany.
Daniel JablonskiDepartment of Zoology, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15, Bratislava, Slovakia.
Melita VambergerMuseum of Zoology (Museum für Tierkunde), Senckenberg Dresden, A. B. Meyer Building, 01109, Dresden, Germany.
Uwe FritzMuseum of Zoology (Museum für Tierkunde), Senckenberg Dresden, A. B. Meyer Building, 01109, Dresden, Germany. uwe.fritz@senckenberg.de.ORCID 0000-0002-6740-7214

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Recent studies found major conflicts between traditional taxonomy and genetic differentiation of grass snakes and identified previously unknown secondary contact zones. Until now, little is known about gene flow across these contact zones. Using two mitochondrial markers and 13 microsatellite loci, we examined two contact zones. One, largely corresponding to the Rhine region, involves the western subspecies Natrix natrix helvetica and the eastern subspecies N. n. natrix, whereas in the other, more easterly, contact zone two lineages meet that are currently identified with N. n. natrix and N. n. persa. This second contact zone runs across Central Europe to the southern Balkans. Our analyses reveal that the western contact zone is narrow, with parapatrically distributed mitochondrial lineages and limited, largely unidirectional nuclear gene flow. In contrast, the eastern contact zone is very wide, with massive nuclear admixture and broadly overlapping mitochondrial lineages. In combination with additional lines of evidence (morphology, phylogeny, divergence times), we conclude that these differences reflect different stages in the speciation process and that Natrix helvetica should be regarded as a distinct species. We suggest a nomenclatural framework for presently recognized grass snake taxa and highlight the need for reconciling the conflicts between genetics and taxonomy.

Indexed as

Hybridization, GeneticAnimalsDNA, MitochondrialEuropeGeographyHaplotypesMicrosatellite RepeatsPhylogenyPopulation DynamicsSequence Analysis, DNASnakesDNA, Mitochondrial

Identifiers

PMID28785033
PMCPMC5547120

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.