| Title |
Reduced Fitness of Daphnia magna Fed a Bt-Transgenic Maize Variety
|
|---|---|
| Published in |
Archives of Environmental Contamination and Toxicology, March 2008
|
| DOI | 10.1007/s00244-008-9150-5 |
| Pubmed ID | |
| Authors |
Thomas Bøhn, Raul Primicerio, Dag O. Hessen, Terje Traavik |
| Abstract |
Genetically modified (GM) maize expressing the Bt-toxin Cry1Ab (Bt-maize) was tested for effects on survival, growth, and reproduction of the water flea Daphnia magna, a crustacean arthropod commonly used as a model organism in ecotoxicological studies. In three repeated experiments, D. magna were fed 100% ground maize in suspension, using either GM or isogenic unmodified (UM) maize. D. magna fed GM-maize showed a significantly reduced fitness performance: The mortality was higher, a lower proportion of females reached sexual maturation, and the overall egg production was lower compared to D. magna fed UM isogenic maize. We conclude that the tested variety of Bt-maize and its UM counterpart do not have the same quality as food sources for this widely used model organism. The combination of a reduced fitness performance combined with earlier onset of reproduction of D. magna fed Bt-maize indicates a toxic effect rather than a lower nutritional value of the GM-maize. |
X Demographics
The data shown below were collected from the profiles of 2 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 1 | 50% |
| Unknown | 1 | 50% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Scientists | 1 | 50% |
| Members of the public | 1 | 50% |
Mendeley readers
The data shown below were compiled from readership statistics for 101 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 3 | 3% |
| Germany | 2 | 2% |
| Netherlands | 1 | <1% |
| France | 1 | <1% |
| Portugal | 1 | <1% |
| Vietnam | 1 | <1% |
| Norway | 1 | <1% |
| Paraguay | 1 | <1% |
| Kenya | 1 | <1% |
| Other | 0 | 0% |
| Unknown | 89 | 88% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 20 | 20% |
| Student > Master | 17 | 17% |
| Student > Ph. D. Student | 15 | 15% |
| Student > Bachelor | 12 | 12% |
| Other | 8 | 8% |
| Other | 17 | 17% |
| Unknown | 12 | 12% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 53 | 52% |
| Environmental Science | 17 | 17% |
| Engineering | 7 | 7% |
| Social Sciences | 2 | 2% |
| Chemistry | 2 | 2% |
| Other | 6 | 6% |
| Unknown | 14 | 14% |
Attention Score in Context
This research output has an Altmetric Attention Score of 9. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 31 May 2014.
All research outputs
#3,830,058
of 23,806,312 outputs
Outputs from Archives of Environmental Contamination and Toxicology
#215
of 2,093 outputs
Outputs of similar age
#12,979
of 83,437 outputs
Outputs of similar age from Archives of Environmental Contamination and Toxicology
#3
of 9 outputs
Altmetric has tracked 23,806,312 research outputs across all sources so far. Compared to these this one has done well and is in the 83rd percentile: it's in the top 25% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 2,093 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 5.6. This one has done well, scoring higher than 89% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 83,437 tracked outputs that were published within six weeks on either side of this one in any source. This one has done well, scoring higher than 84% of its contemporaries.
We're also able to compare this research output to 9 others from the same source and published within six weeks on either side of this one. This one has scored higher than 6 of them.