Evidence map›Paper›PMID 41200246›Full record

ArticleEcology and evolution2025

Impact of Tusk Anomalies on the Long-Term Foraging Ecology of Narwhals.

Marie Louis, Alba Rey-Iglesia, Jennifer Routledge, Deon de Jager, Mikkel Skovrind, Mads Peter Heide-Jørgensen, Thomas M Kaiser, Kit M Kovacs, Christian Lydersen, Aqqalu Rosing-Asvid and 2 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Ecology and evolution, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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

1 citing paper in PubMed.

  1. 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

12 authors.

Marie LouisGreenland Institute of Natural Resources Nuuk Greenland.ORCID https://orcid.org/0000-0002-4611-5503
Alba Rey-IglesiaGlobe Institute, University of Copenhagen Denmark.ORCID https://orcid.org/0000-0002-3768-9185
Jennifer RoutledgeDepartment of Anthropology Trent University Peterborough Ontario Canada.
Deon de JagerGlobe Institute, University of Copenhagen Denmark.ORCID https://orcid.org/0000-0003-4388-2624
Mikkel SkovrindGlobe Institute, University of Copenhagen Denmark.ORCID https://orcid.org/0000-0002-5430-5884
Mads Peter Heide-JørgensenGreenland Institute of Natural Resources Nuuk Greenland.ORCID https://orcid.org/0000-0003-4846-7622
Thomas M KaiserCentre for Taxonomy and Morphology, Section Mammalogy & Paleoanthropology Leibniz Institute for the Analysis of Biodiversity Change (LIB) Hamburg Germany.
Kit M KovacsNorwegian Polar Institute, Fram Centre Tromsø Norway.ORCID https://orcid.org/0000-0002-5878-4819
Christian LydersenNorwegian Polar Institute, Fram Centre Tromsø Norway.
Aqqalu Rosing-AsvidGreenland Institute of Natural Resources Nuuk Greenland.ORCID https://orcid.org/0000-0001-7184-4305
Paul SzpakDepartment of Anthropology Trent University Peterborough Ontario Canada.ORCID https://orcid.org/0000-0002-1364-6834
Eline D LorenzenGlobe Institute, University of Copenhagen Denmark.ORCID https://orcid.org/0000-0002-6353-2819

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Male narwhals are unique in having a long, spiralled tusk, while females of the species do not have a tusk. However, a small number of individuals develop tusk anomalies, including two-tusked males or females with a tusk. In this study, we combine genetic sexing and bone collagen stable isotope (

Indexed as

cetaceansdentitiongenetic sexingstable isotopesδ13C and δ15N

Identifiers

PMID41200246
PMCPMC12588726

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.