Evidence map›Paper›PMID 30349939›Full record

ArticleOecologia2018

Amino acid isotope discrimination factors for a carnivore: physiological insights from leopard sharks and their diet.

John P Whiteman, Sora L Kim, Kelton W McMahon, Paul L Koch, Seth D Newsome

Open access · greenAbstract read
PubMed Publisher
In one paragraph

Article in Oecologia, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
2.7field-weighted citation impact, top 10% 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

12 citing papers in PubMed, 41 citations in OpenAlex.

  1. The Single, the Whole, and the Pooled: Implications of Tissue Choice for Stable Isotope Analysis.Journal of experimental zoology. Part A, Ecological and integrative physiology · 2026
    Review
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  3. Comparison of δScientific reports · 2024
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  12. PeerJ · 2019
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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 4 institutions in 1 country.

John P WhitemanDepartment of Biology, University of New Mexico, Albuquerque, NM, 87131, USA. jwhiteman@unm.edu.ORCID http://orcid.org/0000-0002-3348-9274
Sora L KimDepartment of Life and Environmental Sciences, University of California, Merced, CA, 95343, USA.
Kelton W McMahonGraduate School of Oceanography, University of Rhode Island, Narragansett, RI, 02882, USA.
Paul L KochDepartment of Earth and Planetary Sciences, University of California, Santa Cruz, CA, 95064, USA.
Seth D NewsomeDepartment of Biology, University of New Mexico, Albuquerque, NM, 87131, USA.
University of New Mexico · USUniversity of California, Merced · USUniversity of California, Santa Cruz · USUniversity of Rhode Island · US

Funding

National Science Foundation OCE 0345943
6 · The paper itself

Abstract

Stable isotopes are important ecological tools, because the carbon and nitrogen isotopic composition of consumer tissue reflects the diet. Measurements of isotopes of individual amino acids can disentangle the effects of consumer physiology from spatiotemporal variation in dietary isotopic values. However, this approach requires knowledge of assimilation patterns of dietary amino acids. We reared leopard sharks (Triakis semifasciata) on diets of squid (Loligo opalescens; 1250 days; control sharks) or squid then tilapia (Oreochromis sp.; switched at 565 days; experimental sharks) to evaluate consumer-diet discrimination factors for amino acids in muscle tissue. We found that control sharks exhibited lower nitrogen isotope discrimination factors (∆

Indexed as

DietSharksAmino AcidsAnimalsCarbon IsotopesNitrogen IsotopesAmino AcidsCarbon IsotopesNitrogen IsotopesElasmobranchsFractionationGrowthMicrobesUrea

Identifiers

PMID30349939
OpenAlexW2896645767

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.