Effects of Acaricides on the Functional and Numerical Responses of the Phytoseid Predator Neoseiulus idaeus (Acari: Phytoseiidae) to Spider Mite Eggs
| Autor: | Rosenya Michely Cintra Filgueiras, Raul Narciso C. Guedes, E P de Sousa Neto, J de A Mendes, Debora B. Lima, José Wagner da Silva Melo |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Integrated pest management Phytoseiidae Numerical response Oviposition Population 01 natural sciences Toxicology 03 medical and health sciences chemistry.chemical_compound Spider mite Animals Tetranychus urticae Pest Control Biological education Acaricides 030304 developmental biology Mites 0303 health sciences education.field_of_study Ecology biology Acaricide General Medicine biology.organism_classification 010602 entomology chemistry Predatory Behavior Insect Science Abamectin Female Tetranychidae |
| Zdroj: | Journal of Economic Entomology. 113:1804-1809 |
| ISSN: | 1938-291X 0022-0493 |
| DOI: | 10.1093/jee/toaa101 |
| Popis: | Integrated control tactics are often necessary for pest management. This is especially true for organisms such as the two-spotted spider mite, Tetranychus urticae Koch. The management of this mite pest species relies on pesticide use, but its short life cycle associated with high selection pressure results in frequent problems of acaricide resistance and population outbreaks. Therefore, combining acaricides and natural enemies is an appealing strategy for managing this pest species. The predatory mite Neoseiulus idaeus Denmark & Muma (Phytoseiidae) is important in arid environments, where other natural enemies show low efficacy. Thus, we investigated the effects of representative acaricides used for managing spider mites around the world in several crops (i.e., abamectin, fenpyroximate, and azadirachtin), on the functional and numerical responses of the phytoseid predator N. idaeus to increasing egg densities of its prey. Acaricide exposure did not affect the type of N. idaeus functional response or attack rate (a). However, acaricide exposure decreased the amount of consumed prey and increased prey handling time (Th). All acaricides affected the numerical response of the predator, which reduced oviposition rates. Therefore, caution is required in attempts to integrate the control methods. |
| Databáze: | OpenAIRE |
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