Evidence map›Paper›PMID 34531386›Full record

ArticleNature communications2021

The cichlid oral and pharyngeal jaws are evolutionarily and genetically coupled.

Andrew J Conith, R Craig Albertson

Abstract read
In one paragraph

Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
–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

29 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Ancestral splice variation is a key substrate for rapid diversification in African cichlids.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Biomechanical Specialization Acts as an Asymmetrical Constraint on the Phenotype.Integrative organismal biology (Oxford, England) · 2025
    Article
  11. Uncovering developmental diversity in the field.Development (Cambridge, England) · 2024
    Article
  12. Article
  13. Article
  14. Article
  15. Four-bar Geometry is Shared among Ecologically DivergentFish Species.Integrative organismal biology (Oxford, England) · 2024
    Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Review
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

2 authors.

Andrew J ConithBiology Department, University of Massachusetts Amherst, Amherst, MA, 01003, USA. ajconith@bio.umass.edu.ORCID http://orcid.org/0000-0001-9357-6620
R Craig AlbertsonBiology Department, University of Massachusetts Amherst, Amherst, MA, 01003, USA. albertson@bio.umass.edu.ORCID http://orcid.org/0000-0002-4120-1840

Funding

Genetic and developmental mechanisms that underlie craniofacial variationR01DE026446 · NIDCR · UNIVERSITY OF MASSACHUSETTS AMHERST · PI Craig Albertson · 2017 to 2026
$3.5M
NIDCR NIH HHS R01 DE026446
6 · The paper itself

Abstract

Evolutionary constraints may significantly bias phenotypic change, while "breaking" from such constraints can lead to expanded ecological opportunity. Ray-finned fishes have broken functional constraints by developing two jaws (oral-pharyngeal), decoupling prey capture (oral jaw) from processing (pharyngeal jaw). It is hypothesized that the oral and pharyngeal jaws represent independent evolutionary modules and this facilitated diversification in feeding architectures. Here we test this hypothesis in African cichlids. Contrary to our expectation, we find integration between jaws at multiple evolutionary levels. Next, we document integration at the genetic level, and identify a candidate gene, smad7, within a pleiotropic locus for oral and pharyngeal jaw shape that exhibits correlated expression between the two tissues. Collectively, our data show that African cichlid evolutionary success has occurred within the context of a coupled jaw system, an attribute that may be driving adaptive evolution in this iconic group by facilitating rapid shifts between foraging habitats, providing an advantage in a stochastic environment such as the East African Rift-Valley.

Indexed as

Biological EvolutionAnimalsCichlidsEcosystemFeeding BehaviorFemaleJawLod ScoreMaleMouthPharynxQuantitative Trait LociSequence Analysis, DNAX-Ray Microtomography

Identifiers

PMID34531386
PMCPMC8445992

What OpenQuestion holds

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LicenceCC BY
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.