Publications

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wolbachia and nuclear-nuclear interactions contribute to reproductive incompatibility in the spider mite panonychus mori (acari: tetranychidae).maternally transmitted bacteria of the genus wolbachia are obligate, intracellular symbionts that are responsible for cytoplasmic incompatibility in a wide range of arthropods such as insects and mites. spider mites often show uni- and bidirectional incompatibilities among populations with and without wolbachia. therefore, we surveyed the presence of wolbachia by pcr and then conducted crossing experiments among 25 populations of panonychus mori to determine how wolbachia are related to the inco ...200515578046
wolbachia distribution and cytoplasmic incompatibility based on a survey of 42 spider mite species (acari: tetranychidae) in japan.wolbachia are a group of maternally inherited bacteria that infect a wide range of arthropods. wolbachia infections are known to result in the expression of various abnormal reproductive phenotypes, the best known being cytoplasmic incompatibility. the first systematic survey of 42 spider mite species in japan revealed that seven species (16.7%) were infected with wolbachia. wolbachia in the spider mites were grouped into three subgroups in supergroup b by phylogenetic analyses of the wsp gene. ...200312939620
vertical transmission of wolbachia in tetranychus kanzawai kishida and panonychus mori yokoyama (acari: tetranychidae).the vertical transmission of wolbachia in two species of spider mite was investigated and compared. one species, tetranychus kanzawai kishida, was infected with a modification negative strain of wolbachia while the other species, panonychus mori yokoyama, was infected with a modification positive strain. the infection showed perfect maternal transmission in the laboratory population of t. kanzawai in which wolbachia-infected females produced infected offspring regardless of whether they mated wi ...200211920120
does the number of diapausing eggs laid on bark affect the population dynamics of the spider mite panonychus mori?we studied the relationship between number of diapausing eggs produced by the spider mite panonychus mori and the subsequent population trend for a period of 3 years. panonychus mori showed a single population density peak on its host plant moonseed, cocculus trilobus. the position and height of this peak were correlated with the density of diapausing eggs around the moonseed leaf buds produced the winter before. in 1994 the density of diapausing eggs measured in february was 4.3/bud, which was ...200616680567
population survey of phytoseiid mites and spider mites on peach leaves and wild plants in japanese peach orchard.a population survey of phytoseiid mites and spider mites was conducted on peach leaves and wild plants in japanese peach orchards having different pesticide practices. the phytoseiid mite species composition on peach leaves and wild plants, as estimated using quantitative sequencing, changed during the survey period. moreover, it varied among study sites. the phytoseiid mite species compositions were similar between peach leaves and some wild plants, such as veronica persica, paederia foetida, p ...201424659516
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