Evidence map›Paper›PMID 27708680›Full record

ArticleFrontiers in zoology2016

The cephalopod arm crown: appendage formation and differentiation in the Hawaiian bobtail squid

Marie-Therese Nödl, Alexandra Kerbl, Manfred G Walzl, Gerd B Müller, Heinz Gert de Couet

Open access · goldAbstract read
In one paragraph

Article in Frontiers in zoology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
6.1field-weighted citation impact, top 4% 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

15 citing papers in PubMed, 25 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Neuronal segmentation in cephalopod arms.Nature communications · 2025
    Article
  6. Article
  7. Review
  8. Potential evidence of peripheral learning and memory in the arms of dwarf cuttlefish, Sepia bandensis.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2021
    Article
  9. Article
  10. Article
  11. Biology open · 2019
    Article
  12. Article
  13. Article
  14. Review
  15. 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

5 authors at 3 institutions in 3 countries.

Marie-Therese NödlDepartment of Theoretical Biology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria ; Department of Biology, University of Hawaii at Manoa, 2538 McCarthy Mall, Edmondson Hall 413, Honolulu, HI 96822 USA.ORCID 0000-0001-6210-6044
Alexandra KerblMarine Biology Section - Department of Biology, University of Copenhagen, Universitetsparken 4, 2100 Copenhagen, Denmark.
Manfred G WalzlDepartment of Integrative Zoology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria.
Gerd B MüllerDepartment of Theoretical Biology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria.
Heinz Gert de CouetDepartment of Biology, University of Hawaii at Manoa, 2538 McCarthy Mall, Edmondson Hall 413, Honolulu, HI 96822 USA.
University of Hawaiʻi at Mānoa · USUniversity of Vienna · ATUniversity of Copenhagen · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCephalopods are a highly derived class of molluscs that adapted their body plan to a more active and predatory lifestyle. One intriguing adaptation is the modification of the ventral foot to form a bilaterally symmetric arm crown, which constitutes a true morphological novelty in evolution. In addition, this structure shows many diversifications within the class of cephalopods and therefore offers an interesting opportunity to study the molecular underpinnings of the emergence of phenotypic novelties and their diversification. Here we use the sepiolid

resultsWe show that the morphological formation of the cephalopod appendages occurs during distinct phases, including outgrowth, elongation, and tissue differentiation. Early outgrowth is characterized by uniform cell proliferation, while the elongation of the appendages initiates tissue differentiation. The latter progresses in a gradient from proximal to distal, whereas cell proliferation becomes restricted to the distal-most end of the arm. Differences in the formation of arms and tentacles exist, with the tentacles showing an expedite growth rate and higher complexity at younger stages.

conclusionThe early outgrowth and differentiation of the

Indexed as

AppendageArm crownBobtail squidCephalopodDevelopmentEuprymna scolopesEvolutionLophotrochozoaTentacle

Identifiers

PMID27708680
PMCPMC5041568
OpenAlexW2526741182

What OpenQuestion holds

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LicenceCC BY
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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.