Impact of low-cadmium accumulation rice on arthropod community in the rice paddy

In order to further evaluate the safety of low-cadmium rice by exploring the effects of low-cadmium rice varieties on arthropod communities in paddy fields, we investigated the dynamics of arthropod communities in low-cadmium paddy fields and conventional paddy fields in Youxian County, Zhuzhou City, Hunan Province for two consecutive years from 2022 to 2023 by sweep net method and basin-beating method, and analyzed the community characteristic parameters such as arthropod community richness, community dominance index and Shannon index. Through investigation, a total of 7 032 individuals of arthropods were obtained, belonging to 10 orders, 46 families and 65 species. Most of them were phytophagous pests and predatory natural enemies, and there were few parasitic natural enemies and neutral insects. The results showed that the species composition, species richness, Shannon index, evenness index, dominant concentration and time dynamics of arthropods in low-cadmium paddy fields were basically the same as those in conventional paddy fields. The dominant families and dominant species of arthropods were also basically the same, indicating that low-cadmium rice varieties had no negative effect on the arthropod community in paddy fields.