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Spider mites of Japan: their biology and control.
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Spider mite biology and control in Japan were reviewed and several of the species recently described were separated from a species complex comprising strains with different ecological performance such as host range.Abstract:
Spider mite biology and control in Japan were reviewed. Seventy-eight spider mite species of 16 genera (Family Tetranychidae) have been recorded in Japan. Several of the species recently described were separated from a species complex comprising strains with different ecological performance such as host range. These separations were first supported by crossing experiments and then confirmed by molecular genetic studies. Spider mite control in Japan is still dependent on heavy acaricide spraying in order to attain products of extremely high quality. The commercial use of natural enemies in spider mite management has just started.read more
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Insect pests of tea and their management.
TL;DR: The advances made in the understanding of the biology and ecology of major insect and mite pests of tea, host plant resistance, cultural practices, biocontrol measures, and need-based application of botanicals and safer pesticides are reviewed to understand the present status of IPM and to identify future challenges to improvement.
Journal ArticleDOI
Species composition and seasonal occurrence of spider mites (Acari : Tetranychidae) and their predators in Japanese pear orchards with different agrochemical spraying programs
TL;DR: The species composition and seasonal occurrence of spider mites and their natural enemies were compared in three Japanese pear orchards with different control pressures, from 1996 to 1999, and it is suggested that the species composition of the predatory insects may be less affected by agrochemicals than that ofSpider mites or phytoseiid mites.
Journal ArticleDOI
Influence of prey on developmental performance, reproduction and prey consumption of Neoseiulus californicus (Acari: Phytoseiidae)
TL;DR: The Spical strain of N. californicus could feed on eggs of all five spider mite species, deposited on a variety of plants with similar rm-values, suggesting that it could be successfully used to control spider mites in orchards and various crop fields of Japan.
Journal ArticleDOI
Acaricidal and oviposition deterring effects of santalol identified in sandalwood oil against two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae)
TL;DR: Thirty-four plant essential oils were screened for their acaricidal and oviposition deterrent activities against two-spotted spider mite, Tetranychus urticae Koch, in the laboratory using a leaf-dip bioassay and only sandalwood oil was significantly active against TSSM adult females.
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Acaricidal and repellent effects of myrtacean essential oils and their major constituents against Tetranychus urticae (Tetranychidae)
TL;DR: Plant essential oils extracted from the family Myrtaceae growing in Australia were screened for their acaricidal and repellent activities against two-spotted spider mite, Tetranychus urticae Koch, in the laboratory by dipping method and choice- and no-choice tests, revealing major components of E. bicostata and E. sideroxylon were 1,8-cineole, limonene, and α-pinene.
References
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Journal ArticleDOI
Species-wide homogeneity of nuclear ribosomal ITS2 sequences in the spider mite Tetranychus urticae contrasts with extensive mitochondrial COI polymorphism
TL;DR: It is argued that rDNA homogeneity over the species range of T. urticae results from the high colonization potential of this species, preventing long-term differentiation.
Book
Insect life-cycle polymorphism: theory, evolution and ecological consequences for seasonality and diapause control.
TL;DR: In insect life--cycle polymorphism, a pivotal factor for latitudinal and seasonal adaptation in Locusta migratoria in Japan, current ideas and future prospects are presented.
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Reproductive interference and its consequences for the competitive interactions between two closely related Panonychus spider mites
TL;DR: It is demonstrated that the stable co-existence of the two species is unlikely and that P. citri will have a much higher chance of excluding P. mori, due to a greater reproductive interference effect and higher reproductive rate than the latter, however, the outcome of competition depends on the initial density ratios, which will be influenced by various stochastic events, thereby reducing the probability of one-sided exclusion over a wider area.
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Inter- and intra-population variations in diapause attribute of the two-spotted spider mite, Tetranychus urticae Koch, in Japan
TL;DR: The results show that diapause inT.