Devillers James
CTIS, 3 Chemin de la Gravière, 69140 Rillieux-La-Pape, France.
Toxics. 2020 Mar 13;8(1):20. doi: 10.3390/toxics8010020.
Since the 1990s, the insect growth regulator pyriproxyfen has been widely used worldwide as a larvicide in vector control and in agriculture to fight a very large number of pests. Due to its widespread use it is of first importance to know how pyriproxyfen behaves in the terrestrial ecosystems. This was the goal of this work to establish the fate profile of pyriproxyfen in soils and plants. Thus, in soil, pyriproxyfen photodegrades slowly but its aerobic degradation is fast. The insecticide presents a high tendency to adsorb onto soils and it is not subject to leaching into groundwater. On the contrary its two main metabolites (4'-OH-Pyr and PYPAC) show a different fate in soil. When sprayed to plants, pyriproxyfen behaves as a translaminar insecticide. Its half-life in plants ranges from less than one week to about three weeks. The review ends by showing how the fate profile of pyriproxyfen in soils and plants influences the adverse effects of the molecule on non-target organisms.
自20世纪90年代以来，昆虫生长调节剂吡丙醚作为杀幼虫剂在全球范围内被广泛用于病媒控制和农业领域，以对抗大量害虫。由于其广泛使用，了解吡丙醚在陆地生态系统中的行为至关重要。这项工作的目标是确定吡丙醚在土壤和植物中的归宿情况。因此，在土壤中，吡丙醚光降解缓慢，但其好氧降解迅速。该杀虫剂具有很强的吸附到土壤上的倾向，并且不会渗入地下水。相反，它的两种主要代谢物（4'-OH-Pyr和PYPAC）在土壤中的归宿不同。当喷洒到植物上时，吡丙醚表现为一种跨层杀虫剂。它在植物中的半衰期从不到一周到大约三周不等。综述最后展示了吡丙醚在土壤和植物中的归宿情况如何影响该分子对非靶标生物的不利影响。
