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  • P-ISSN2765-2203
  • E-ISSN2765-2211

Analysis of Arthropod Communities in Sunflower-cultivated Fields to Develop Risk Assessment Guidelines for LMO Used for Environmental Remediation

Proceedings of the National Institute of Ecology of the Republic of Korea, (P)2765-2203; (E)2765-2211
2021, v.2 no.2, pp.129-138
https://doi.org/10.22920/PNIE.2021.2.2.129
Dong Eon Kim (Division of Ecology Safety, National Institute of Ecology)
Dayeong Kim (Division of Ecology Safety, National Institute of Ecology)
Young-Gyu Ban (Division of Ecology Safety, National Institute of Ecology)
Minji Lee (Division of Ecology Safety, National Institute of Ecology)
Heejo Lee (Division of Ecology Safety, National Institute of Ecology)
Aram Jo (Division of Ecology Safety, National Institute of Ecology)
Sung Min Han (Division of Ecology Safety, National Institute of Ecology)
Jung Ro Lee (Division of Ecology Safety, National Institute of Ecology)
Kyong-Hee Nam (Division of Ecology Safety, National Institute of Ecology)

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Abstract

Living modified organisms (LMOs) are managed by seven government agencies according to their use in South Korea. The Ministry of Environment is responsible for LMOs used for environmental remediation. This study aimed to develop guidelines for assessing potential risks posed by transgenic plants used for remediation to insect ecosystems by investigating arthropod communities in sunflower fields. A total of 2,350 insects and spiders belonging to 134 species of 10 orders and 71 families were collected from sunflower fields over four growth stages ranging from anthesis to seed maturity. At the R3 phase of flower-bud formation, Chironomidae sp. of a decomposer insect guild presented the highest density, while Apis mellifera of a pollinator guild was the most abundant in the R5.8 phase of flowering. During the R7 seed-filling phase and the R9 phase of seed maturity, herbivorous Pochazia shantungensis predominated. During the R9 phase, richness and diversity indices of arthropod communities were distinctly lower whereas their dominance indices were significantly higher than those at other phases. In addition, the composition of arthropod communities was strongly correlated not only with the sampling date, but also with the sampling method depending on the growth stage of sunflowers. Our results suggest that appropriate sampling timing and methods should be considered in advance and that long-term field trials that cover a variety of environmental conditions should be carried out to evaluate potential risks to insect ecosystems.

Submission Date
2021-03-15
Revised Date
2021-03-23
Accepted Date
2021-03-23

Proceedings of the National Institute of Ecology of the Republic of Korea