COMMENSAL RODENTS and THEIR PARASITES in ISRAEL

• Main Authors: Amos Wilamowski, Shumel Moran, Zalan Greenburg
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Rattus rattus; Mite
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.518.84; http://www.icup.org.uk/reports/ICUP210.pdf

Abstract New findings on the geographical distribution and ecto- and endoparasites of Rattus norvegicus, Rattus rattus, and Mus musculus were recorded in 1999-2000. Seven specimens of R. rattus were trapped in the coastal plain of Israel, six of these in the Haifa area and one in Tel Aviv. Up to this record, the coastal plain was known to harbor only R. norvegicus. An adult R. norvegicus was trapped in Jerusalem, a new record of this species inland. The rat flea, Xenopsylla cheopis, is a parasite of R. norvegicus in Israel, and its known geographical distribution was, till now, the coastal plain. X. cheopis is the vector of murine typhus, a few cases of which are recorded each year only in the coastal plain. One specimen of R. norvegicus trapped in Tel Aviv was infested with a single X. cheopis. This level of infestation of 0-1 fleas per rat is in accordance with the infestation index recorded in Israel since the beginning of the 1980s. One specimen of X. cheopis was recorded on the R. norvegicus trapped in Jerusalem, possibly indicating a changing distribution pattern of the rat flea, together with the invasion of R. norvegicus to the inland areas. The most worrying finding was 31 rat fleas recorded on a single R. norvegicus in the Lod area. Such a high infestation level has not been observed in Israel since the 1960s, posing a threat to public health. Only a few mite specimens were found on both rat species. A large population of rat lice, Polyplax spinulosa, was found on R. rattus from the village of Yesodot. Such lice are not a direct danger to man, but it has been shown that they have great epidemiologi-