Evidence map›Paper›PMID 21368831›Full record

ArticleNature2011

Phylogenomic analyses unravel annelid evolution.

Torsten H Struck, Christiane Paul, Natascha Hill, Stefanie Hartmann, Christoph Hösel, Michael Kube, Bernhard Lieb, Achim Meyer, Ralph Tiedemann, Günter Purschke and 1 more

Abstract read
PubMed Publisher
In one paragraph

Article in Nature, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 136 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
136citing papers in PubMed, 1 pooled it
35.1field-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

136 citing papers in PubMed, 1 synthesis or guideline pooled it, 408 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Polychaete annelids from the earliest Cambrian Period.Proceedings of the National Academy of Sciences of the United States of America · 2026
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  15. Annelids as models of germ cell and gonad regeneration.Journal of experimental zoology. Part B, Molecular and developmental evolution · 2024
    Review
  16. New fossil ofRoyal Society open science · 2024
    Article
  17. Article
  18. Article
  19. The first complete mitochondrial genome ofMitochondrial DNA. Part B, Resources · 2024
    Article
  20. Article

76 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 5 institutions in 1 country.

Torsten H StruckUniversity of Osnabrück, FB05 Biology/Chemistry, AG Zoology, Barbarastrasse 11, 49069 Osnabrück, Germany. struck@biologie.uni-osnabrueck.de
Christiane Paul
Natascha Hill
Stefanie Hartmann
Christoph Hösel
Michael Kube
Bernhard Lieb
Achim Meyer
Ralph Tiedemann
Günter Purschke
Christoph Bleidorn
University of Potsdam · DEOsnabrück University · DEJohannes Gutenberg University Mainz · DELeipzig University · DEMax Planck Institute for Molecular Genetics · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Annelida, the ringed worms, is a highly diverse animal phylum that includes more than 15,000 described species and constitutes the dominant benthic macrofauna from the intertidal zone down to the deep sea. A robust annelid phylogeny would shape our understanding of animal body-plan evolution and shed light on the bilaterian ground pattern. Traditionally, Annelida has been split into two major groups: Clitellata (earthworms and leeches) and polychaetes (bristle worms), but recent evidence suggests that other taxa that were once considered to be separate phyla (Sipuncula, Echiura and Siboglinidae (also known as Pogonophora)) should be included in Annelida. However, the deep-level evolutionary relationships of Annelida are still poorly understood, and a robust reconstruction of annelid evolutionary history is needed. Here we show that phylogenomic analyses of 34 annelid taxa, using 47,953 amino acid positions, recovered a well-supported phylogeny with strong support for major splits. Our results recover chaetopterids, myzostomids and sipunculids in the basal part of the tree, although the position of Myzostomida remains uncertain owing to its long branch. The remaining taxa are split into two clades: Errantia (which includes the model annelid Platynereis), and Sedentaria (which includes Clitellata). Ancestral character trait reconstructions indicate that these clades show adaptation to either an errant or a sedentary lifestyle, with alteration of accompanying morphological traits such as peristaltic movement, parapodia and sensory perception. Finally, life history characters in Annelida seem to be phylogenetically informative.

Indexed as

PhylogenyAnimalsAnnelidaExpressed Sequence TagsGenomeGenomicsModels, Biological

Identifiers

PMID21368831
OpenAlexW1989032832

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.