1969•Nagasaki University's Academic Output SITE (Nagasaki University)Open access
Dispersal Experiment of Culex tritaeniorhynchus in Nagasaki Area (Preliminary Report)
Yoshito Wada, Senji Kawai, Tsutomu Oda, Ichiro Miyagi, Osamu Suenaga, Jojiro Nishigaki, Nanzaburo Omori, Katsumi Takahashi, R. Matsuo, Tatsuya Itoh, Yoshiyuki Takatsuki
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Abstract
To make clear the dispersal of Culex tntaeniorhynchus females in rather hilly Nagasaki area, a mark-and-recapture method was applied in summer, 1967. From 3 points, differently marked 156,500 females in total were released at 4 AM, July 29, and recapture catches were made by light traps at 19 points in the area of 8km×10km on 7 succeeding nights from the release. From the results obtained, it is seen that (1) the females disperse generally along valleys and seacoast; (2) usual flight range seems to be at least 1.0km; (3) some of the females have an ability to fly at least 2.0km without landing, and to disperse at least 8.4km. Also a method of estimating daily loss rate of the released females by the daily recapture data was described.
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