Statistical Analyses of the Influence of Meteorological Factors on Flight Activity of Female Tabanids

概要

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The influence of meteorological factors on flight activity of tabanids, especially three dominant species (Tabanus nipponicus, T. fulvimedioides, and Hirosia humilis) was surveyed by daily CO_2-lured net trapping for 11 : 00-12 : 00 AM from 8 April-23 November in Iwate Pref., 1983. The trap catches were largely influenced by some meteorological conditions as well as by the population size at the survey. Using a flight activity index (F.I.) to eliminate the influence of fluctuating population size, multiple regression analyses of the data indicated that in general, solar radiation, relative humidity, and wind velocity were decisive factors affecting flight activity. The importance of each individual factor, however, varied according to species. Wind velocity appeared to have primarily mechanical action inhibiting flight activity. Air temperature was of little importance, except in limiting initiation of flight activity of each species. Solar radition had a strong influence upon flight activity. High relative humidity was a flight depressant for T. nipponicus, which has a diurnal activity pattern, but it did not do so for T. fulvimedioides, and H. humilis, both of which are crepuscular.
日本昆虫学会の論文
1985-03-25