Abstract
In order to provide more evidence for the evaluation of the ecological risks of transgenic maize, arthropod population dynamics and biodiversity in fields planted with two kinds of transgenic maize (DBN9868, expressing the PAT and EPSPS genes, and DBN9936, expressing the Cry1Ab and EPSPS gene) were investigated by direct observation and trapping for three years. The recorded arthropod species belonged to 19 orders and 87 families, including Aphidoidea, Chrysomelidae, Coccinellidae, Chrysopidae and Araneae. The species richness, Shannon–Wiener diversity index, Pielou evenness index, dominance index and community similarity index of arthropod communities in maize fields were statistically analyzed, and the results showed that (1) the biodiversity difference of arthropod communities between transgenic maize and non-transgenic maize was smaller than that between different conventional cultivars; (2) the differences between ground-dwelling arthropod communities were less obvious than those between plant-inhabiting arthropod communities; and (3) Lepidoptera, the target pests of Bt maize, were not the dominant population in maize fields, and the dominant arthropod population in maize fields varied greatly between years and months. Combining those results, we concluded that the transgenic maize DBN9868 and DBN9936 had no significant effect on the arthropod communities in the field.
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Claims 6
Claim · model-written summary
Recorded arthropods belonged to 19 orders and 87 families.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The recorded arthropod species belonged to 19 orders and 87 families”
e1“arthropod population dynamics and biodiversity in fields planted with two kinds of transgenic maize”
Claim · model-written summary
Arthropod biodiversity differed less between transgenic and nontransgenic maize than between conventional cultivars.
- Interactor
- arthropod communitiese0other
- Outcome
- biodiversity difference of arthropod communitiese0
- Direction
- smallere0
- Comparator
- different conventional cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the biodiversity difference of arthropod communities between transgenic maize and non-transgenic maize was smaller than that between different conventional cultivars”
Claim · model-written summary
Ground-dwelling arthropod communities differed less than plant-inhabiting communities.
- Interactor
- arthropod communitiese0other
- Outcome
- differences between ground-dwelling arthropod communitiese0
- Direction
- less obviouse0
- Comparator
- plant-inhabiting arthropod communitiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the differences between ground-dwelling arthropod communities were less obvious than those between plant-inhabiting arthropod communities”
e1“maize fields were statistically analyzed”
Claim · model-written summary
Lepidoptera were not the dominant arthropod population in maize fields.
- Interactor
- LepidopteraLepidopterae0pest
- Outcome
- not the dominant populatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lepidoptera, the target pests of Bt maize, were not the dominant population in maize fields”
Claim · model-written summary
Dominant arthropod populations varied greatly between years and months.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dominant arthropod population in maize fields varied greatly between years and months”
Claim · model-written summary
The authors conclude that DBN9868 and DBN9936 had no significant effect on field arthropod communities.
- Treatment
- transgenic maize DBN9868 and DBN9936e0
- Interactor
- arthropod communitiese0other
- Outcome
- arthropod communitiese0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the transgenic maize DBN9868 and DBN9936 had no significant effect on the arthropod communities in the field”
The same questions in other papers
transgenic · ecology: diversity · Zea mays (maize)Results agree
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- no effect
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See all 13 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.