Evidence map›Paper›PMID 29453332›Full record

ArticleScientific reports2018

Step-wise evolution of complex chemical defenses in millipedes: a phylogenomic approach.

Juanita Rodriguez, Tappey H Jones, Petra Sierwald, Paul E Marek, William A Shear, Michael S Brewer, Kevin M Kocot, Jason E Bond

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.9field-weighted citation impact, top 13% 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

19 citing papers in PubMed, 50 citations in OpenAlex.

  1. The evolution of eyespots in skates and rays.Nature ecology & evolution · 2026
    Article
  2. Review
  3. The hidden life ofApplied and environmental microbiology · 2025
    Article
  4. Article
  5. The Discovery of Complex Heterocycles from Millipede Secretions.Journal of the American Chemical Society · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Natural history of the social millipedeBiodiversity data journal · 2020
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Cryptic diversity inZooKeys · 2018
    Article
  19. 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 at 8 institutions in 2 countries.

Juanita RodriguezDepartment of Biological Sciences, Auburn University, Auburn, AL, 36849, USA.
Tappey H JonesDepartment of Chemistry, Virginia Military Institute, Lexington, VA, 24450, USA.
Petra SierwaldZoology Department, The Field Museum, Chicago, IL, 60605, USA.
Paul E MarekDepartment of Entomology, Virginia Tech, Blacksburg, VA, 24061, USA.
William A ShearBiology Department, Hampden-Sydney College, Farmville, VA, 23943, USA.
Michael S BrewerDepartment of Biology, East Carolina University, Greenville, NC, 27858, USA.
Kevin M KocotDepartment of Biological Sciences, University of Alabama, Tuscaloosa, AL, 35487, USA.
Jason E BondDepartment of Biological Sciences, Auburn University, Auburn, AL, 36849, USA. jeb0037@auburn.edu.
Auburn University · USAustralian National Insect Collection · AUEast Carolina University · USField Museum of Natural History · USHampden–Sydney College · USUniversity of Alabama · USVirginia Military Institute · USVirginia Tech · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

With fossil representatives from the Silurian capable of respiring atmospheric oxygen, millipedes are among the oldest terrestrial animals, and likely the first to acquire diverse and complex chemical defenses against predators. Exploring the origin of complex adaptive traits is critical for understanding the evolution of Earth's biological complexity, and chemical defense evolution serves as an ideal study system. The classic explanation for the evolution of complexity is by gradual increase from simple to complex, passing through intermediate "stepping stone" states. Here we present the first phylogenetic-based study of the evolution of complex chemical defenses in millipedes by generating the largest genomic-based phylogenetic dataset ever assembled for the group. Our phylogenomic results demonstrate that chemical complexity shows a clear pattern of escalation through time. New pathways are added in a stepwise pattern, leading to greater chemical complexity, independently in a number of derived lineages. This complexity gradually increased through time, leading to the advent of three distantly related chemically complex evolutionary lineages, each uniquely characteristic of each of the respective millipede groups.

Indexed as

Biological EvolutionPhylogenyAdaptation, BiologicalAnimalsArthropodsGenomics

Identifiers

PMID29453332
PMCPMC5816663
OpenAlexW2806504808

What OpenQuestion holds

Textmetadata
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.