title: Treating Prey With Glyphosate Does Not Alter the Demographic Parameters and Predation of the Harmonia axyridis (Coleoptera: Coccinellidae).
abstract: Glyphosate is an herbicide that is used worldwide with potential environmental risks to nontarget organisms. We applied an age-stage, two-sex life table approach to assess the sublethal effects of short-term oral exposure to a glyphosate-based herbicide on the life table parameters and biocontrol potential of Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae). Aphids (Metopolophium dirhodum (Walker) (Sternorrhyncha: Aphididae)) treated with herbicide (an isopropylamine-salt of glyphosate) at low recommended, maximum recommended, and double the maximum recommended concentration for agricultural situations, and untreated controls were offered to the fourth instar of H. axyridis for 24 h. Development, consumption, and fecundity were measured daily until death. We detected minor differences in the hatching rate and mean generation time, whereas the longevity, fecundity, net reproductive rate, intrinsic rate of increase, finite rate of increase, and consumption were unaffected across treatments. We conclude that biocontrol potential of H. axyridis was not affected by acute oral intoxication by a glyphosate-based herbicide during the larval stage for 24 h under the study design.
authors.affiliation: Crop Research Institute, Group Functional Diversity of Invertebrates and Plants in Agro-Ecosystems, Drnovská 507, Prague 6 - Ruzyne, 161 06 Czech Republic (saska@vurv.cz; jirislav@vurv.cz; lukas@vurv.cz; vlach.miroslav@centrum.cz; honek@vurv.cz).
authors.forename: Pavel
authors.initials: P
authors.lastname: Saska
authors.affiliation: Crop Research Institute, Group Functional Diversity of Invertebrates and Plants in Agro-Ecosystems, Drnovská 507, Prague 6 - Ruzyne, 161 06 Czech Republic (saska@vurv.cz; jirislav@vurv.cz; lukas@vurv.cz; vlach.miroslav@centrum.cz; honek@vurv.cz).
authors.forename: Jirí
authors.initials: J
authors.lastname: Skuhrovec
authors.affiliation: Crop Research Institute, Group Functional Diversity of Invertebrates and Plants in Agro-Ecosystems, Drnovská 507, Prague 6 - Ruzyne, 161 06 Czech Republic (saska@vurv.cz; jirislav@vurv.cz; lukas@vurv.cz; vlach.miroslav@centrum.cz; honek@vurv.cz).
authors.forename: Jan
authors.initials: J
authors.lastname: Lukáš
authors.affiliation: Crop Research Institute, Group Functional Diversity of Invertebrates and Plants in Agro-Ecosystems, Drnovská 507, Prague 6 - Ruzyne, 161 06 Czech Republic (saska@vurv.cz; jirislav@vurv.cz; lukas@vurv.cz; vlach.miroslav@centrum.cz; honek@vurv.cz).
authors.forename: Miroslav
authors.initials: M
authors.lastname: Vlach
authors.affiliation: Department of Entomology, National Chung Hsing University, 250 Kuo-Kuang Rd., Taichung, 40227, Taiwan, Republic of China (hsinchi@dragon.nchu.edu.tw; sjtuan@dragon.nchu.edu.tw).
authors.forename: Hsin
authors.initials: H
authors.lastname: Chi
authors.affiliation: Department of Entomology, National Chung Hsing University, 250 Kuo-Kuang Rd., Taichung, 40227, Taiwan, Republic of China (hsinchi@dragon.nchu.edu.tw; sjtuan@dragon.nchu.edu.tw).
authors.forename: Shu-Jen
authors.initials: SJ
authors.lastname: Tuan
authors.affiliation: Crop Research Institute, Group Functional Diversity of Invertebrates and Plants in Agro-Ecosystems, Drnovská 507, Prague 6 - Ruzyne, 161 06 Czech Republic (saska@vurv.cz; jirislav@vurv.cz; lukas@vurv.cz; vlach.miroslav@centrum.cz; honek@vurv.cz).
authors.forename: Alois
authors.initials: A
authors.lastname: Honek
mesh_terms: D000818:Animals; D001042:Aphids / Q000737:chemistry* / Q000254:growth & development; D001517:Coleoptera / Q000187:drug effects* / Q000254:growth & development / Q000502:physiology; D005260:Female; D020387:Food Chain; D005998:Glycine / Q000031:analogs & derivatives* / Q000633:toxicity; D007306:Insecticides / Q000633:toxicity*; D007814:Larva / Q000187:drug effects / Q000254:growth & development / Q000502:physiology; D000071421:Life History Traits; D008297:Male; D009758:Nymph / Q000737:chemistry / Q000254:growth & development; D010572:Pest Control, Biological; D011235:Predatory Behavior / Q000187:drug effects; D011679:Pupa / Q000187:drug effects / Q000254:growth & development / Q000502:physiology; D000097797:Glyphosate
chemical_list: D005998:Glycine; D007306:Insecticides; D000097797:Glyphosate
keywords: Harlequin lady beetle; Roundup; aphidophagy; life table, biocontrol potential