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Effect of prey density on sex ratio of two predacious mites, Phytoseiulus persimilis and Amblyseius womersleyi (Acari: Phytoseiidae)
It is concluded that the sex ratio of phytoseiid mites is not determined by the characteristics of the progeny, but by the nutritious condition of the females. Expand
Larval survival and development of the peach fruit moth, Carposina sasakii (Lepidoptera : Carposinidae), in picked and unpicked apple fruits
The results suggest that low survival and the retardation of larval development are caused by factor(s) related to fruit growth, which remains to be detected. Expand
A candidate of predatory phytoseiid mites (Acari: Phytoseiidae) for the control of the European red mite, Panonychus ulmi (Koch), (Acari: Tetranychidae) in Japanese apple orchards
Among phytoseiid mites sampled, T. vulgaris showed a favorable developmental ratio of 75% with the female ratio of 67%, when reared on P. ulmi, and was expected to be an effective predator for suppressing the P. Ulmi population in apple orchards under reduced spray programs. Expand
Diversity and abundance of phytoseiid mites on Magnolia hypoleuca Siebold et Zuccarini, a candidate source of natural enemies in natural vegetation
The species composition and seasonal dynamics of predatory phytoseiid mites on magnolia, Magnolia hypoleuca, were investigated for 4 y to determine whether M. hypoleuca may act as a source of naturalExpand
Diversity and abundance of phytoseiid mites in natural vegetation in the vicinity of apple orchards in Japan
Mite species of the family Phytoseiidae, which includes some important natural enemies of spider mites and insect pests, found on wild plants in the vicinity of apple orchards in north Japan, wereExpand
Species composition and arthropod pest feeding of phytoseiid mites in a Japanese pear greenhouse
A population survey of spider mites and phytoseiid mites was conducted on Japanese pear leaves in a greenhouse and a PCR-based method to detect the ribosomal internal transcribed spacer (ITS) sequences ofSpider mites from phytOSEiid Mite species inhabiting in the greenhouse was developed. Expand
Effects of starvation on reproduction of the predacious mite Neoseiulus californicus (Acari: Phytoseiidae)
Findings suggest that gravid females maintained an oocyte in the dorsal region after laying two eggs during starvation, the oocyte was not absorbed during starvation and the oocytes advanced vitellogenesis and the fusion of two nuclei, and the viteLLogenic oocytes was not enveloped with an eggshell and had not started embryogenesis. Expand
Population survey of phytoseiid mites and spider mites on peach leaves and wild plants in Japanese peach orchard
Results showed that Euseius sojaensis (specialized pollen feeder/generalist predator) uses both spider mites as prey in the field and a PCR-based method to detect the ribosomal ITS sequences from phytoseiid mites was developed. Expand
Intraspecific variation of reproductive characteristics of Amblyseius californicus (McGregor) (Acari: Phytoseiidae)
It is shown that the long post-oviposition period in the commercial strain is the only character that could lead to displacement or competitive exclusion of genetically native populations in crop fields and natural vegetation. Expand
Description of an unrecorded phytoseiid mite, Neoseiulus harrowi (Collyer), from Japanese spinach greenhouses.
The habitat of N. harrowi is described and a simple method of distinguishing it from the three other domestic species of the N. barkeri group is presented, which was observed associating with a spinach-damaging mite, Tyrophagus similis Volgin, in the greenhouse. Expand