Evidence map›Paper›PMID 32179976›Full record

ArticleOecologia2020

Are you really what you eat? Stomach content analysis and stable isotope ratios do not uniformly estimate dietary niche characteristics in three marine predators.

Julia C Petta, Oliver N Shipley, Sabine P Wintner, Geremy Cliff, Matt L Dicken, Nigel E Hussey

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In one paragraph

Article in Oecologia, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing 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

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

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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

6 authors.

Julia C PettaIntegrative Biology, University of Windsor, Windsor, ON, N9B 3P4, Canada.
Oliver N ShipleySchool of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY, 11794, USA.
Sabine P WintnerBiomedical Resource Unit, University of KwaZulu-Natal, Durban, 4000, South Africa.
Geremy CliffBiomedical Resource Unit, University of KwaZulu-Natal, Durban, 4000, South Africa.
Matt L DickenKwaZulu-Natal Sharks Board, Maritime Centre of Excellence, 1A Herrwood Drive, Umhlanga Rocks, Umhlanga, 4320, South Africa.
Nigel E HusseyIntegrative Biology, University of Windsor, Windsor, ON, N9B 3P4, Canada. nehussey@uwindsor.ca.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Calculation of dietary niche characteristics using stable isotopes has become a popular approach to understand the functional role of taxa across food webs. An underlying assumption of this approach is that stable isotopes accurately reflect the dietary breadth of a species over a temporal duration defined by tissue-specific isotopic turnover rates. In theory, dietary niche estimates derived from fast turnover rate tissues (e.g., blood plasma and liver) may augment stomach content-derived estimates more agreeably than slower turnover rate tissues (e.g., muscle or fin). We tested this hypothesis by comparing commonly used dietary niche estimates derived from stomach contents (niche

Indexed as

Gastrointestinal ContentsSharksAnimalsCarbon IsotopesFood ChainNitrogen IsotopesCarbon IsotopesNitrogen IsotopesCarbon and nitrogen isotopesElasmobranchIsotopic nicheSharkStomach content niche

Identifiers

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.