-
Article
Open AccessPatterns of reproductive isolation in a haplodiploid mite, Amphitetranychus viennensis: prezygotic isolation, hybrid inviability and hybrid sterility
Evolution of reproductive isolation is an important process, generating biodiversity and driving speciation. To better understand this process, it is necessary to investigate factors underlying reproductive is...
-
Article
A new species of Amblyseius Berlese (Acari: Phytoseiidae) from Japan
A new phytoseiid mite species, Amblyseius marunumus sp. n., is described and illustrated based on female and male specimens collected from Gunma, Japan. The new species belongs to the americanus species-group, du...
-
Article
Open AccessImpact of global warming scenarios on life-history traits of Tetranychus evansi (Acari: Tetranychidae)
The tomato red spider mite, Tetranychus evansi Baker & Pritchard (Acari: Tetranychidae), is an agricultural pest of solanaceous crops. Although T. evansi is of South American subtropical origin, it has recently e...
-
Article
UV-B susceptibility and photoreactivation in embryonic development of the two-spotted spider mite, Tetranychus urticae
Developmental errors are often induced in the embryos of many organisms by environmental stress. Ultraviolet-B radiation (UV-B) is one of the most serious environmental stressors in embryonic development. Here...
-
Article
Non-destructive direct polymerase chain reaction (direct PCR) greatly facilitates molecular identification of spider mites (Acari: Tetranychidae)
Spider mites (Acari: Tetranychidae) include serious agricultural pests and some species have spread globally as invasive species.. For this reason, rapid and simple identification of spider mite species is nec...
-
Article
Open AccessIntraspecific variation among Tetranychid mites for ability to detoxify and to induce plant defenses
Two genotypes coexist among Kanzawa spider mites, one of which causes red scars and the other of which causes white scars on leaves, and they elicit different defense responses in host plants. Based on RNA-Seq...
-
Article
Copulation duration, sperm transfer and reproduction of the two closely related phytoseiid mites, Neoseiulus womersleyi and Neoseiulus longispinosus (Acari: Phytoseiidae)
The effects of copulation duration on reproduction were studied in two important biological control agents, Neoseiulus womersleyi (Schicha) and Neoseiulus longispinosus (Evans), to better understand their reprodu...
-
Article
Pesticide-mediated displacement of a phytoseiid predator, Neoseiulus womersleyi, by another phytoseiid predator, N. californicus (Acari: Phytoseiidae)
Neoseiulus womersleyi and N. californicus are two predators that are frequently used to control spider mites in fruit-tree orchards. Neoseiulus womersleyi used to be the dominant predator...
-
Article
Development and reproduction of five Tetranychus species (Acari: Tetranychidae): Do they all have the potential to become major pests?
The objective of this study was to investigate whether four spider mite species, Tetranychus ludeni, T. phaselus, T. piercei and T. truncatus, currently with insignificant economic impact, have the potential to a...
-
Article
Deoxidant-induced anoxia as a physical measure for controlling spider mites (Acari: Tetranychidae)
Tiny agricultural pests such as spider mites (Acari: Tetranychidae) attached to seedlings grown outdoors often invade greenhouses, thereby triggering pest outbreaks. To solve the problem, we examined whether d...
-
Article
Message from the Chief Editor
-
Article
Effects of constant and variable temperatures on development and reproduction of the two-spotted spider mite Tetranychus urticae (Acari: Tetranychidae)
We focused on the influence of different temperature amplitudes on development and reproduction of the two-spotted spider mite, Tetranychus urticae Koch, at a 16:8 (L:D) h photoperiod and 60–95 % RH. The temperat...
-
Article
Factors determining species displacement of related predatory mite species (Acari: Phytoseiidae)
Neoseiulus womersleyi (Acari: Phytoseiidae) used to be the dominant species in fruit-tree orchards throughout Japan, but starting in the 1990s, N. womersleyi began to be displaced by Neoseiulus c...
-
Article
Message from the new Chief Editor
-
Article
Wolbachia Strengthens Cardinium-Induced Cytoplasmic Incompatibility in the Spider Mite Tetranychus piercei McGregor
Wolbachia and Cardinium are maternally inherited intracellular bacteria that can manipulate the reproduction of their arthropod hosts, such as by inducing cytoplasmic incompatibility (CI). Althou...
-
Article
Temperature-dependent development and reproductive traits of Tetranychus macfarlanei (Acari: Tetranychidae)
Development and reproductive traits of Tetranychus macfarlanei Baker & Pritchard (Acari: Tetranychidae) were investigated on kidney bean, Phaseolus vulgaris L., at eleven constant temperatures. Tetranychus macfar...
-
Article
Food scarcity reduces female longevity of Neoseiulus californicus (Acari: Phytoseiidae)
A commercial strain of Neoseiulus californicus (Spical®) has a conspicuously long postoviposition period in comparison with other strains of N. californicus or other phytoseiid mites. In many insects and mites, l...
-
Article
Effect of multiple mating on reproduction and longevity of the phytoseiid mite Neoseiulus californicus
Females of some insects and mites that mate repeatedly (multiple-mated females) or that have limited food supply have a shortened life span, compared to females that are allowed to mate only once (single-mated...
-
Article
Wolbachia-induced cytoplasmic incompatibility in Japanese populations of Tetranychus urticae (Acari: Tetranychidae)
Intracellular bacteria of the genus Wolbachia (alpha Proteobacteria) induce cytoplasmic incompatibility (CI) in many arthropod species, including spider mites, but not all Wolbachia cause CI. In spider mites CI b...
-
Article
Influence of prey on developmental performance, reproduction and prey consumption of Neoseiulus californicus (Acari: Phytoseiidae)
The Spical strain of the predatory mite Neoseiulus californicus (McGregor) is used as a biological control agent, but little is known about its preferred prey and host plants in Japan. Here we studied the develop...
