Evidence map›Paper›PMID 29236686›Full record

ArticleNature2018

Convergent evolution of bilaterian nerve cords.

José M Martín-Durán, Kevin Pang, Aina Børve, Henrike Semmler Lê, Anlaug Furu, Johanna Taylor Cannon, Ulf Jondelius, Andreas Hejnol

Open access · greenAbstract read
In one paragraph

Article in Nature, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 74 papers.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed
38.3field-weighted citation impact, top 1% of its field
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

74 citing papers in PubMed, 234 citations in OpenAlex.

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  9. Early transitions in the evolution of cognition.History and philosophy of the life sciences · 2025
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14 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 1 institution in 1 country.

José M Martín-DuránSars International Centre for Marine Molecular Biology, University of Bergen, Thørmohlensgate 55, 5006 Bergen, Norway.
Kevin PangSars International Centre for Marine Molecular Biology, University of Bergen, Thørmohlensgate 55, 5006 Bergen, Norway.
Aina BørveSars International Centre for Marine Molecular Biology, University of Bergen, Thørmohlensgate 55, 5006 Bergen, Norway.
Henrike Semmler LêSars International Centre for Marine Molecular Biology, University of Bergen, Thørmohlensgate 55, 5006 Bergen, Norway.
Anlaug FuruSars International Centre for Marine Molecular Biology, University of Bergen, Thørmohlensgate 55, 5006 Bergen, Norway.
Johanna Taylor CannonNaturhistoriska Riksmuseet, PO Box 50007, SE-104 05 Stockholm, Sweden.
Ulf JondeliusNaturhistoriska Riksmuseet, PO Box 50007, SE-104 05 Stockholm, Sweden.
Andreas HejnolSars International Centre for Marine Molecular Biology, University of Bergen, Thørmohlensgate 55, 5006 Bergen, Norway.
University of Bergen · NO

Funding

European Research Council 648861
6 · The paper itself

Abstract

It has been hypothesized that a condensed nervous system with a medial ventral nerve cord is an ancestral character of Bilateria. The presence of similar dorsoventral molecular patterns along the nerve cords of vertebrates, flies, and an annelid has been interpreted as support for this scenario. Whether these similarities are generally found across the diversity of bilaterian neuroanatomies is unclear, and thus the evolutionary history of the nervous system is still contentious. Here we study representatives of Xenacoelomorpha, Rotifera, Nemertea, Brachiopoda, and Annelida to assess the conservation of the dorsoventral nerve cord patterning. None of the studied species show a conserved dorsoventral molecular regionalization of their nerve cords, not even the annelid Owenia fusiformis, whose trunk neuroanatomy parallels that of vertebrates and flies. Our findings restrict the use of molecular patterns to explain nervous system evolution, and suggest that the similarities in dorsoventral patterning and trunk neuroanatomies evolved independently in Bilateria.

Indexed as

Biological EvolutionAnimalsAnnelidaBody PatterningCentral Nervous SystemInvertebratesNerve NetNeural PlatePhylogenyRotifera

Identifiers

PMID29236686
PMCPMC5756474
OpenAlexW2774307240

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

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.