Impact of a glyphosate-based herbicide on the longevity, fertility, and transgenerational effects on Chrysopa pallens (Rambur) (Neuroptera: Chrysopidae)

• Published in: Environmental science and pollution research international 2024-03, Vol.31 (14), p.21845-21856
• Main Authors: Du, Qiankun, Ren, Xiangliang, Ma, Xiaoyan, Wang, Dan, Song, Xianpeng, Hu, Hongyan, Wu, Changcai, Shan, Yongpan, Ma, Yajie, Ma, Yan
• Format: Article
• Language: English
• Subjects: Adults; Agricultural ecosystems; Agricultural practices; agroecosystems; AKT protein; Aquatic Pollution; arthropods; Atmospheric Protection/Air Quality Control/Air Pollution; Chrysopa; Chrysopa pallens; Chrysopidae; Down-regulation; Earth and Environmental Science; Ecotoxicology; Environment; Environmental Chemistry; Environmental Health; Environmental risk; Extracellular signal-regulated kinase; Fecundity; Fertility; Gene expression; Genes; Genetic modification; Genetically engineered microorganisms; Glyphosate; herbicide resistance; Herbicides; Insulin; insulin receptors; Kinases; Larvae; Life tables; Longevity; natural enemies; Neuroptera; Parameters; Pests; Protein-serine/threonine kinase; pupae; Research Article; risk; serine; threonine; Vitellogenin; Waste Water Technology; Water Management; Water Pollution Control
• ISSN: 1614-7499; 0944-1344; 1614-7499
• DOI: 10.1007/s11356-024-32601-w

Glyphosate-based herbicides (GBHs) are common herbicide formulations used in the field and are increasingly used worldwide with the widespread cultivation of herbicide-tolerant genetically modified crops. As a result, the risk of arthropod exposure to GBH is increasing rapidly. Chrysopa pallens (Rambur) (Neuroptera: Chrysopidae) is a common predatory natural enemy in agroecosystems, which is exposed to GBH (Roundup®) while preying on pests. To identify and characterize the potential effects of GBH on C. pallens , the life tables of C. pallens larvae and adults fed with GBH were constructed. Moreover, the effects of GBH treatment on the expression of genes involved in insulin signalling in adults were analyzed using qRT-PCR. The results showed that GBH treatment altered the pupal period and preadult stage of C. pallens larvae. However, it did no effect on longevity, fecundity, and population parameters and two insulin receptor genes ( InR1 , InR2 ), a serine/threonine kinase ( Akt ), an extracellular-signal-regulated kinase ( erk ), and vitellogenin ( Vg1 ) expression of C. pallens . Adults feeding on GBH significantly altered development, longevity, and differences in the mean generation time of the F 0 generation. However, GBH feeding only minimally influenced the growth and population parameters of the F 1 generation. In addition, InR1 , InR2 , erk , and Vg1 expression in the F 0 generation were downregulated on the fifth day of feeding on GBH. Furthermore, the expression levels of InR1 , InR2 , Akt , erk , and Vg1 in C. pallens decreased with the increase of GBH concentration, although the expression levels returned to control levels on the tenth day. Overall, the consumption of the GBH by larvae and adults of C. pallens had minimal effect on the growth and population parameters of C. pallens . The findings of this study can provide a reference for elucidating the environmental risks of GBH, guiding the optimal use of glyphosate in agricultural practices in the future.