| laboratory and field evaluations of camptothecin sodium salt against phytophagous mites. | camptothecin (cpt), a monoterpene indole alkaloid from camptotheca acuminate (nyssaceae), is toxic to some insect pests but insoluble in water. here we show that an aqueous cpt-na(+) solution can kill the phytophagous mites tetranychus urticae (tu), acaphylla theae (at) and brevipalpus obovatus (bo) under laboratory and field conditions. | 2016 | 25924840 |
| joint effect of solar uvb and heat stress on the seasonal change of egg hatching success in the herbivorous false spider mite (acari: tenuipalpidae). | seasonal population dynamics of an herbivorous mite has been documented in terms of the relationship between thermoresponses and temporal biological factors such as resource availability or predation risk. although recent studies emphasize the deleterious effects of solar ultraviolet-b (uvb; 280-320 nm wavelengths) radiation on plant-dwelling mites, how uvb affects mite population remains largely unknown. on a wild shrub viburnum erosum var. punctatum in kyoto, an herbivorous false spider mite, ... | 2015 | 26314033 |
| stellate hairs on leaves of a deciduous shrub viburnum erosum var. punctatum (adoxaceae) effectively protect brevipalpus obovatus (acari: tenuipalpidae) eggs from the predator phytoseius nipponicus (acari: phytoseiidae). | the eggs of the herbivorous false spider mite brevipalpus obovatus donnadieu have a longer incubation period than those of spider mites and are not protected by webs. brevipalpus obovatus often lays its eggs in the gaps among the hairs on host leaves. we examined the effects of stellate hairs of viburnum erosum var. punctatum (vep) leaves on the survival of b. obovatus eggs. adult b. obovatus and phytoseius nipponicus ehara, a generalist predator, were introduced to vep leaf disks; each b. obova ... | 2013 | 23400449 |
| geotaxis and leaf-surface preferences mitigate negative effects of a predatory mite on an herbivorous mite. | reproductive success and population growth of an herbivorous mite are limited by activities of phytoseiid predators. however, occurrences on upper versus lower leaf surfaces are sometimes mismatched between these prey and predators. the mismatch potentially mitigates predation risk for the prey species. we assessed factors that affect mite distributions on leaf surfaces, testing whether the presence of the phytoseiid mite phytoseius nipponicus alters the leaf-surface distribution and reproductiv ... | 2013 | 23011108 |
| evaluation of the predatory mite amblyseius hainanensis (acari: phytoseiidae) and artificial rainfall for the management of brevipalpus obovatus (acari: tenuipalpidae). | brevipalpus obovatus donnadieu is an important pest mite on tea plants in south china. in the current study, predatory mites of b. obovatus in the tea gardens of guangzhou were extensively surveyed. in total, 13 species of predatory mites (four families with seven genera) were recorded. the population proportion of amblyseius hainanensis wu et qian was the highest (68.6 %), followed by that of anystis baccarum (l.) (8.4 %) and a. theae wu (6.3 %). the effects of starvation time, habitat size and ... | 2012 | 22527834 |
| maturation divisions with double the somatic chromosome number in the privet mite brevipalpus obovatus. | | 1975 | 1120502 |