title: Vertical transmission of Wolbachia in Tetranychus kanzawai Kishida and Panonychus mori Yokoyama (Acari: Tetranychidae).
abstract: 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 with infected or uninfected males, and uninfected females produced Wolbachia-free progenies without regard to the infection status of their mating partners. In artificial P. mori populations initiated with 50% infected and 50% uninfected female adults, the infection frequencies among progenies increased with each generation, reaching 100% at the sixth generation in the Sendai population and after the sixth generation in the Toyama population. In another experiment, in which an artificial T. kanzawai population was composed of 50% infected and 50% uninfected female adults, the infection frequency in progeny populations increased very slowly, reaching 62.5% at the 15th generation. The difference in infection frequency in the two spider mites may be due to the different strains of Wolbachia.
authors.affiliation: Laboratory of Applied Entomology and Zoology, Faculty of Agriculture, Ibaraki University, Ami, Ibaraki 300-0393, Japan.
authors.forename: X-Y
authors.initials: XY
authors.lastname: Hong
authors.forename: T
authors.initials: T
authors.lastname: Gotoh
authors.forename: T
authors.initials: T
authors.lastname: Nagata
mesh_terms: D000818:Animals; D004247:DNA / Q000378:metabolism; D005260:Female; D016905:Gram-Negative Bacterial Infections; D018445:Infectious Disease Transmission, Vertical; D008297:Male; D008925:Mites / Q000382:microbiology*; D015233:Models, Statistical; D012098:Reproduction / Q000502:physiology*; D012726:Sexual Behavior, Animal; D013045:Species Specificity; D013997:Time Factors; D020577:Wolbachia / Q000378:metabolism*
chemical_list: D004247:DNA