Acaricides sublethal effects are more harmful to predatory mite Phytoseiulus macropilis Banks (Acari: Phytoseiidae) than to the pest Tetranychus urticae Koch (Acari: Tetranychidae)
Copyright policy )Acaricides sublethal effects are more harmful to predatory mite Phytoseiulus macropilis Banks (Acari: Phytoseiidae) than to the pest Tetranychus urticae Koch (Acari: Tetranychidae)
To evaluate the lethal and sublethal effect of the abamectin and dimethoate acaricides on the predator P. macropilis and its prey T. urticae. Scope: Lethal and sublethal effect of acaricides on P. macropilis and T. urticae. Methodology: The lethal and sublethal effect of the abamectin and dimethoate acaricides on the predator P. macropilis and its prey T. urticae was determined in laboratory experiments. Main results: T. urticae was 2.6-fold and 4.2-fold more tolerant than P. macropilis to abamectin and dimethoate, respectively. The instantaneous rate of increase of prey and predator decreased linearly with increasing concentrations of both acaricides. However, the instantaneous rate of increase of the predator population decreased more rapidly than that of the pest, resulting in extinction of predator populations, whereas the pest population persisted. Conclusions: Farmers may achieve better control by not spraying acaricides, but managing the populations of this predator in the field using natural enemy conservation techniques.
- University of Caldas Colombia
- Instituto de Ecología Mexico
Mite, Impact of Pesticides on Honey Bee Health, Abamectin, Population, Spider mite, Predation, Horticulture, Toxicology, Agricultural and Biological Sciences, Sociology, Biochemistry, Genetics and Molecular Biology, Dimethoate, Phytoseiidae, Molecular Biology, Biology, Acari, Demography, Ecology, Insect-Plant Interactions in Agricultural Ecosystems, Botany, Life Sciences, Tetranychus urticae, Pesticide Effects, Agronomy, FOS: Sociology, Pesticide, Molecular Mechanisms of Insect Resistance to Xenobiotics, PEST analysis, Insect Science, FOS: Biological sciences, Acaricide, Predator
Mite, Impact of Pesticides on Honey Bee Health, Abamectin, Population, Spider mite, Predation, Horticulture, Toxicology, Agricultural and Biological Sciences, Sociology, Biochemistry, Genetics and Molecular Biology, Dimethoate, Phytoseiidae, Molecular Biology, Biology, Acari, Demography, Ecology, Insect-Plant Interactions in Agricultural Ecosystems, Botany, Life Sciences, Tetranychus urticae, Pesticide Effects, Agronomy, FOS: Sociology, Pesticide, Molecular Mechanisms of Insect Resistance to Xenobiotics, PEST analysis, Insect Science, FOS: Biological sciences, Acaricide, Predator
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