2024-03-29T14:03:18Z
https://soar-ir.repo.nii.ac.jp/oai
oai:soar-ir.repo.nii.ac.jp:00017041
2022-12-14T04:10:49Z
1628:1629:1662
恙虫病非流行域にあたる松本市域の恙虫類
Chiggers Distributed in Matsumoto,a Nonendemic Area of tsutsuga~ushi Disease
内川, 公人
熊田, 信夫
Although the reoccurrence of tsutsugamushi disease broke out in Naga:no Prefecture in 1981, a case diagnosed retrospectivelyoccurred in the year before. Since that time on,th e geographical distribution of patientshas ap artiality for some regions, and several densely populated areas have been left out of the endemic. The authors carried out a survey of chiggers in the municipal area of Matsumoto, one of the typical nonendemic areas.Rodents werecaptured to examine chiggers on them at sunny grassy sites expected on the basis of former observations to be suitable habitats for the vector chigger, Leptotrombidium pallidum. L. pallidum and other chiggers occurred abundantly on Apodemus speciosus and Microtus montebelli taken on the western slope of Mt. Hachibuse, while chiggers were sparse and no L. pallidum was found on the mice and voles trapped on lhe gentle southern slope at Okada. As to seasonal prevalence of L. pallidum and some other species of chiggers on rodents, two peaks of occurrence were observed,one in spring and the other in autumn, on sites at more than 670m above the sea level. Thus,it is proved that the continued existence of nonendemic area in Matsumoto City is not attributable to lack of the vector chigger. Incidence of pathogenic rickettsiae in the chigger and other problems are to be analyzed.
Article
信州大学環境科学論集8:1-5(1986)
信州大学環境問題研究教育懇談会
1986-03-31
jpn
research report
VoR
http://hdl.handle.net/10091/12615
https://soar-ir.repo.nii.ac.jp/records/17041
0915-7492
AN10562285
信州大学環境科学論集
8
1
5
https://soar-ir.repo.nii.ac.jp/record/17041/files/08-04.pdf
application/pdf
399.1 kB
2015-09-28