Urakami H, Takahashi M, Tamura A, Hori E
Department of Microbiology, Niigata College of Pharmacy.
Microbiol Immunol. 1988;32(9):967-72. doi: 10.1111/j.1348-0421.1988.tb01459.x.
Embryos of Leptotrombidium (Leptotrombidium) pallidum mites naturally infected with Rickettsia tsutsugamushi were examined by electron microscopy. Rickettsiae were not found in eggs just after oviposition, but were easily detected in cells at the various parts of the embryos just before hatching, indicating that the rickettsiae are surely vertically transmitted from infected adult mites to the larvae through embryos, and the rickettsiae may multiply in situ during the developing process of the embryo.
用电子显微镜检查了自然感染恙虫病立克次体的苍白纤恙螨（纤恙螨属）胚胎。刚产卵后的卵中未发现立克次体，但在孵化前胚胎各部位的细胞中很容易检测到立克次体，这表明立克次体确实通过胚胎从受感染的成年螨垂直传播给幼虫，并且立克次体可能在胚胎发育过程中在原位繁殖。
