Beneficial arthropods threatened by synthetic agricultural pesticides around the southeast slopes of Mount Cameroon
Agriculture is among the main drivers of global biodiversity decline. This research assessed the ecological risk of synthetic pesticides at the southeast slopes of Mount Cameroon on bees and other non-target arthropods (NTAs) using the PRIMET (Pesticide RIsk in the tropics to Man, Environment and Tr...
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Elsevier
2025-02-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844025006218 |
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| author | Daniel Brice Nkontcheu Kenko Agathe Lambou Fotio Kenfack Donhachi Aimerance Derick Atemlefac Acha Miranda Egbe Awo Eric Bertrand Fokam |
| author_facet | Daniel Brice Nkontcheu Kenko Agathe Lambou Fotio Kenfack Donhachi Aimerance Derick Atemlefac Acha Miranda Egbe Awo Eric Bertrand Fokam |
| author_sort | Daniel Brice Nkontcheu Kenko |
| collection | DOAJ |
| description | Agriculture is among the main drivers of global biodiversity decline. This research assessed the ecological risk of synthetic pesticides at the southeast slopes of Mount Cameroon on bees and other non-target arthropods (NTAs) using the PRIMET (Pesticide RIsk in the tropics to Man, Environment and Trade) model. Data on pesticide usage (active ingredients, interval, dosage, number of applications), and ecotoxicology (LD50 and environmental behaviour) were collected from field surveys and the IUPAC databases, respectively, then imported into PRIMET to assess the level of risk expressed in Exposure Toxicity Ratio (ETR). Tomato was the main crop of the area while insecticides were the main pesticide category utilised in the study area. Nine (09) compounds were predicted to pose a “risk” to bees namely abamectin, fipronil, imidacloprid, thiamethoxam, emamectin-benzoate, cypermethrin, lambda-cyhalothrin, indoxacarb and ethoprophos. Abamectin had the highest ETR in the group (NECbee = 0.05 g a.i./ha; ETRbee = 20000). Fifteen (15) active ingredients were predicted by the model to pose a certain in-field risk to NTAs with lambda-cyhalothrin at the top position (AECNTA = 0.0034 g a.i./ha; ETRIF = 1147000). There was evidence that insecticides were of more risk to beneficial arthropods, as compared to other types of pesticides. Pesticides active ingredients such as abamectin, fipronil, imidacloprid, thiamethoxam, emamectin-benzoate, cypermethrin and lambda-cyhalothrin that were predicted to pose “Risk” both to bees and others NTAs require serious mitigation strategies (biological control, improve cultural practices, target application, farmer's education). |
| format | Article |
| id | doaj-art-6983ae7ffeb44ebc9d22293473a9b2f7 |
| institution | Kabale University |
| issn | 2405-8440 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj-art-6983ae7ffeb44ebc9d22293473a9b2f72025-01-31T05:12:04ZengElsevierHeliyon2405-84402025-02-01113e42241Beneficial arthropods threatened by synthetic agricultural pesticides around the southeast slopes of Mount CameroonDaniel Brice Nkontcheu Kenko0Agathe Lambou Fotio1Kenfack Donhachi Aimerance2Derick Atemlefac Acha3Miranda Egbe Awo4Eric Bertrand Fokam5Department of Animal Biology and Conservation, Faculty of Science, University of Buea, Cameroon; Biology and Applied Ecology Research Unit, University of Dschang, Cameroon; Corresponding author. P.O. Box 63, Buea, South-West Region, Cameroon.Department of Animal Biology and Conservation, Faculty of Science, University of Buea, CameroonAdvanced School of Agriculture, Forestry, Water Resources and Environment, University of Ebolowa, Cameroon; Applied Hydrobiology and Ichthyology Research Unit, University of Dschang, CameroonDepartment of Animal Biology and Conservation, Faculty of Science, University of Buea, CameroonDepartment of Plant Science, Faculty of Science, University of Buea, CameroonDepartment of Animal Biology and Conservation, Faculty of Science, University of Buea, CameroonAgriculture is among the main drivers of global biodiversity decline. This research assessed the ecological risk of synthetic pesticides at the southeast slopes of Mount Cameroon on bees and other non-target arthropods (NTAs) using the PRIMET (Pesticide RIsk in the tropics to Man, Environment and Trade) model. Data on pesticide usage (active ingredients, interval, dosage, number of applications), and ecotoxicology (LD50 and environmental behaviour) were collected from field surveys and the IUPAC databases, respectively, then imported into PRIMET to assess the level of risk expressed in Exposure Toxicity Ratio (ETR). Tomato was the main crop of the area while insecticides were the main pesticide category utilised in the study area. Nine (09) compounds were predicted to pose a “risk” to bees namely abamectin, fipronil, imidacloprid, thiamethoxam, emamectin-benzoate, cypermethrin, lambda-cyhalothrin, indoxacarb and ethoprophos. Abamectin had the highest ETR in the group (NECbee = 0.05 g a.i./ha; ETRbee = 20000). Fifteen (15) active ingredients were predicted by the model to pose a certain in-field risk to NTAs with lambda-cyhalothrin at the top position (AECNTA = 0.0034 g a.i./ha; ETRIF = 1147000). There was evidence that insecticides were of more risk to beneficial arthropods, as compared to other types of pesticides. Pesticides active ingredients such as abamectin, fipronil, imidacloprid, thiamethoxam, emamectin-benzoate, cypermethrin and lambda-cyhalothrin that were predicted to pose “Risk” both to bees and others NTAs require serious mitigation strategies (biological control, improve cultural practices, target application, farmer's education).http://www.sciencedirect.com/science/article/pii/S2405844025006218PollinatorsBeesNon-target arthropodsPesticide risk assessmentMount CameroonAgriculture |
| spellingShingle | Daniel Brice Nkontcheu Kenko Agathe Lambou Fotio Kenfack Donhachi Aimerance Derick Atemlefac Acha Miranda Egbe Awo Eric Bertrand Fokam Beneficial arthropods threatened by synthetic agricultural pesticides around the southeast slopes of Mount Cameroon Heliyon Pollinators Bees Non-target arthropods Pesticide risk assessment Mount Cameroon Agriculture |
| title | Beneficial arthropods threatened by synthetic agricultural pesticides around the southeast slopes of Mount Cameroon |
| title_full | Beneficial arthropods threatened by synthetic agricultural pesticides around the southeast slopes of Mount Cameroon |
| title_fullStr | Beneficial arthropods threatened by synthetic agricultural pesticides around the southeast slopes of Mount Cameroon |
| title_full_unstemmed | Beneficial arthropods threatened by synthetic agricultural pesticides around the southeast slopes of Mount Cameroon |
| title_short | Beneficial arthropods threatened by synthetic agricultural pesticides around the southeast slopes of Mount Cameroon |
| title_sort | beneficial arthropods threatened by synthetic agricultural pesticides around the southeast slopes of mount cameroon |
| topic | Pollinators Bees Non-target arthropods Pesticide risk assessment Mount Cameroon Agriculture |
| url | http://www.sciencedirect.com/science/article/pii/S2405844025006218 |
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