| Title: | Ecotoxicity of pesticides and semiochemicals used for control and prevention of conifer bark beetle (Dendroctonus spp.) outbreaks |
| Author(s): | Rivera-Davila OL; Sanchez-Martinez G; Rico-Martinez R; |
| Address: | "Universidad Autonoma de Aguascalientes, Centro de Ciencias Basicas, Departamento de Quimica, Avenida Universidad 940, Aguascalientes, Aguascalientes, C.P. 20131, Mexico. Centro de Investigacion Regional Norte Centro, Campo Experimental Pabellon, INIFAP, Km. 32.5 Carretera Aguascalientes-Zacatecas, Pabellon de Arteaga, Ags. C.P, 20670, Mexico. Electronic address: sanchezm.guillermo@inifap.gob.mx. Universidad Autonoma de Aguascalientes, Centro de Ciencias Basicas, Departamento de Quimica, Avenida Universidad 940, Aguascalientes, Aguascalientes, C.P. 20131, Mexico. Electronic address: roberto.rico@edu.uaa.mx" |
| DOI: | 10.1016/j.chemosphere.2020.128375 |
| ISSN/ISBN: | 1879-1298 (Electronic) 0045-6535 (Linking) |
| Abstract: | "Application of pyrethroid pesticides and semiochemicals are two treatments used worldwide to control conifer bark beetles (Dendroctonus spp.); their residues can reach water reservoirs and water currents through run off and affect non-target organisms such as freshwater invertebrates. Therefore, we assessed the 48-h lethal toxicity, chronic toxicity (reproduction inhibition), and bioaccumulation of three pyrethroid pesticides (bifenthrin, cypermethrin, and deltamethrin) and two semiochemicals (verbenone and 3-methyl-2-cyclohexen-1-one) in two freshwater invertebrates: the cladoceran Alona guttata and the rotifer Lecane papuana. Bifenthrin was the most toxic of the five chemical compounds tested followed by deltamethrin and then cypermethrin, which was the least toxic pyrethroid for both species. Semiochemicals were far less toxic than pyrethroids and verbenone was most toxic than 3-methyl-2-cyclohexen-1-one for both species. For the rotifer Lecane papuana, the pyrethroid with the highest Bioconcentration Factor was bifenthrin, and for the semiochemicals it was 3-methyl-2-cyclohexen-1-one. For the cladoceran Alona guttata, the pyrethroid with the highest bioconcentration factor was cypermethrin and for the semiochemicals it was verbenone. The pyrethroid with highest body burdens both lethal and chronic was cypermethrin. Semiochemicals showed lethal and chronic body burdens 12-fold higher than pyrethroids and were therefore less toxic than pyrethroids. These results showed that the semiochemicals verbenone and 3-methyl-2-cyclohexen-1-one are a safe tool for the freshwater invertebrates tested when compared with pyrethroid pesticides. Cypermethrin was the least toxic of the pyrethroids tested and therefore could be considered as a good candidate to control outbreaks of the conifer bark beetle" |
| Keywords: | "Animals *Coleoptera Disease Outbreaks *Insecticides/analysis *Pesticides/toxicity Pheromones Plant Bark/chemistry *Pyrethrins/toxicity *Tracheophyta *Water Pollutants, Chemical/analysis Bioaccumulation Body burden Freshwater invertebrates Mch Pyrethroids;" |
| Notes: | "MedlineRivera-Davila, Olga Lidia Sanchez-Martinez, Guillermo Rico-Martinez, Roberto eng England 2020/12/11 Chemosphere. 2021 Jan; 263:128375. doi: 10.1016/j.chemosphere.2020.128375. Epub 2020 Sep 17" |
