Evidence map›Paper›PMID 19859805›Full record

ArticleEcotoxicology (London, England)2010

Demographic responses of Daphnia magna fed transgenic Bt-maize.

Thomas Bøhn, Terje Traavik, Raul Primicerio

Abstract read
In one paragraph

Article in Ecotoxicology (London, England), 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing 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

10 citing papers in PubMed.

  1. Plant background, notFrontiers in plant science · 2026
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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

3 authors.

Thomas BøhnGenøk, Center for Biosafety, The Science Park, P.O. Box 6418, 9294, Tromsø, Norway. thomas@genok.org
Terje Traavik
Raul Primicerio

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The food/feed quality of a variety of genetically modified (GM) maize expressing Cry1Ab Bt-toxin was tested over the life-cycle of Daphnia magna, an arthropod commonly used as model organism in ecotoxicological studies. Demographic responses were compared between animals fed GM or unmodified (UM) near isogenic maize, with and without the addition of predator smell. Age-specific data on survival and birth rates were integrated and analysed using life tables and Leslie matrices. Survival, fecundity and population growth rate (PGR) data generally disfavoured transgenic Bt-maize as feed for D. magna compared to animals fed the unmodified (UM) near isogenic line of maize. Decomposition of age-specific effects revealed that the most important contributions to a reduced PGR in the GM-fed group came from both fecundity and survival differences early in life. We conclude that juvenile and young adult stages are the most sensitive experimental units and should be prioritized in future research. These stages are often omitted in toxicological/ecotoxicological studies and in feeding trials.

Indexed as

DemographyAnimal FeedAnimalsBacillus thuringiensis ToxinsBacterial ProteinsDaphniaDietEndotoxinsHemolysin ProteinsInsecticidesPlants, Genetically ModifiedSurvival RateZea maysBacillus thuringiensis ToxinsBacterial ProteinsEndotoxinsHemolysin Proteinsinsecticidal crystal protein, Bacillus ThuringiensisInsecticides

Identifiers

PMID19859805
PMCPMC2811247

What OpenQuestion holds

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LicenceCC BY-NC
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.