Evidence map›Paper›PMID 9262399›Full record

ArticleNature1997

Molecular evidence from retroposons that whales form a clade within even-toed ungulates.

M Shimamura, H Yasue, K Ohshima, H Abe, H Kato, T Kishiro, M Goto, I Munechika, N Okada

Abstract read
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In one paragraph

Article in Nature, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed
30.0field-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

70 citing papers in PubMed, 404 citations in OpenAlex.

  1. Cellular Composition of the Brain of a Northern Minke Whale.The Journal of comparative neurology · 2025
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  12. A genomic landscape of mitochondrial DNA insertions in the pig nuclear genome provides evolutionary signatures of interspecies admixture.DNA research : an international journal for rapid publication of reports on genes and genomes · 2017
    Article
  13. Article
  14. Article
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  17. Stress physiology in marine mammals: how well do they fit the terrestrial model?Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2015
    Review
  18. Article
  19. Article
  20. Article

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 4 institutions in 1 country.

M ShimamuraFaculty of Bioscience and Biotechnology, Tokyo Institute of Technology, Kanagawa, Japan.
H Yasue
K Ohshima
H Abe
H Kato
T Kishiro
M Goto
I Munechika
N Okada
Tokyo Institute of Technology · JPJapan Fisheries Research and Education Agency · JPNational Institute of Animal Health · JPTokyo Zoological Park Society · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The origin of whales and their transition from terrestrial life to a fully aquatic existence has been studied in depth. Palaeontological, morphological and molecular studies suggest that the order Cetacea (whales, dolphins and porpoises) is more closely related to the order Artiodactyla (even-toed ungulates, including cows, camels and pigs) than to other ungulate orders. The traditional view that the order Artiodactyla is monophyletic has been challenged by molecular analyses of variations in mitochondrial and nuclear DNA. We have characterized two families of short interspersed elements (SINEs) that were present exclusively in the genomes of whales, ruminants and hippopotamuses, but not in those of camels and pigs. We made an extensive survey of retropositional events that might have occurred during the divergence of whales and even-toed ungulates. We have characterized nine retropositional events of a SINE unit, each of which provides phylogenetic resolution of the relationships among whales, ruminants, hippopotamuses and pigs. Our data provide evidence that whales, ruminants and hippopotamuses form a monophyletic group.

Indexed as

PhylogenyRetroelementsAnimalsArtiodactylaBase SequenceDNAHumansMolecular Sequence DataSequence AlignmentWhalesDNARetroelements

Identifiers

PMID9262399
OpenAlexW1838926299

What OpenQuestion holds

Textmetadata
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.