PMID- 36495778 OWN - NLM STAT- MEDLINE DCOM- 20230116 LR - 20230116 IS - 1879-1026 (Electronic) IS - 0048-9697 (Linking) VI - 861 DP - 2023 Feb 25 TI - Does pesticide use in agriculture present a risk to the terrestrial biota? PG - 160715 LID - S0048-9697(22)07818-4 [pii] LID - 10.1016/j.scitotenv.2022.160715 [doi] AB - Inadequate pesticide application practices have many implications on human and environmental health. This research aimed at assessing pesticide risks on bees, non-target arthropods (NTAs) and earthworms, using PRIMET (Pesticide Risks in the Tropics to Man, Environment and Trade), a pesticide risk model, in the western highlands agro-ecological zone of Cameroon. For this purpose, information on pesticide usage stratagem (dosage, application interval and number of applications) and ecotoxicological properties (median lethal doses, persistence and no observable effect concentration) were gathered and entered into PRIMET to acquire the Predicted Exposure Concentration (PEC), No Effect Concentration (NEC) and Exposure Toxicity Ratio, ETR = PEC / NEC). The risk assessment revealed that the riskiest pesticides for earthworms were acetamiprid, glyphosate and imidacloprid with ETR values of 2963, 1667 and 419 respectively. For bees, acetamiprid, cypermethrin, emamectin benzoate, imidacloprid, and lambda-cyhalothrin were highly risky, with respective ETR values of 3252, 487, 278, 1383 and 295. The model predicted NTAs to be predominantly defenceless against cypermethrin and imidacloprid, as these compounds exhibited the topmost values of ETR of, 4.3 x 10(8) and 4.4 x 10(7), respectively. Other pesticides that were modelled to be highly risky to NTAs comprised chlorothalonil (ETR = 2076), cymoxanil (ETR = 1133), emamectin benzoate (ETR = 1700), lambda-cyhalothrin (ETR = 4900) and metalaxyl (ETR = 2303). Some compounds gave evidence of multi-level risks: imidacloprid exhibited high risk to all the organisms (earthworms, bees and NTAs); acetamiprid was risky to earthworms and bees, while cypermethrin, emamectin benzoate and lambda-cyhalothrin, were modelled to pose a risk to bees and NTAs. Regulating the use of these perilous pesticides should be encouraged in agroecosystems to protect environmental and human health. CI - Copyright (c) 2022 Elsevier B.V. All rights reserved. FAU - Kenko, Daniel Brice Nkontcheu AU - Kenko DBN AD - Department of Animal Biology and Conservation, Faculty of Science, University of Buea, Cameroon; Biology and Applied Ecology Research Unit, Dschang School of Science and Technology, University of Dschang, Cameroon. Electronic address: kenko.daniel@ubuea.cm. FAU - Ngameni, Norbert Tchamadeu AU - Ngameni NT AD - Biology and Applied Ecology Research Unit, Dschang School of Science and Technology, University of Dschang, Cameroon. FAU - Awo, Miranda Egbe AU - Awo ME AD - Department of Plant Science, Faculty of Science, University of Buea, Cameroon. FAU - Njikam, Nacaire Ahmed AU - Njikam NA AD - Biology and Applied Ecology Research Unit, Dschang School of Science and Technology, University of Dschang, Cameroon. FAU - Dzemo, William Diymba AU - Dzemo WD AD - Department of Biological and Environmental Sciences, Faculty of Natural Sciences, Walter Sisulu University, South Africa. LA - eng PT - Journal Article DEP - 20221207 PL - Netherlands TA - Sci Total Environ JT - The Science of the total environment JID - 0330500 RN - 1TR49121NP (cypermethrin) RN - 0 (Pesticides) RN - V0V73PEB8M (cyhalothrin) RN - 3BN7M937V8 (imidacloprid) RN - HVM3G4A01W (emamectin benzoate) RN - 0 (Insecticides) SB - IM MH - Humans MH - Male MH - Bees MH - Animals MH - *Pesticides/toxicity MH - Agriculture MH - *Insecticides OTO - NOTNLM OT - Exposure toxicity ratio OT - No effect concentration OT - PRIMET OT - Pesticides OT - Predicted exposure concentration OT - Terrestrial risk COIS- Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2022/12/11 06:00 MHDA- 2023/01/17 06:00 CRDT- 2022/12/10 18:28 PHST- 2022/10/02 00:00 [received] PHST- 2022/11/21 00:00 [revised] PHST- 2022/12/02 00:00 [accepted] PHST- 2022/12/11 06:00 [pubmed] PHST- 2023/01/17 06:00 [medline] PHST- 2022/12/10 18:28 [entrez] AID - S0048-9697(22)07818-4 [pii] AID - 10.1016/j.scitotenv.2022.160715 [doi] PST - ppublish SO - Sci Total Environ. 2023 Feb 25;861:160715. doi: 10.1016/j.scitotenv.2022.160715. Epub 2022 Dec 7.