Selection of Effective Ages and Parameters for Qualitative Discrimination between Wild, Mass-Reared, and Irradiated Strains through Comparison of Tethered Flight Sounds of the Melon Flies, Dacus cucurbitae COQUILLETT : (Diptera : Tephritidae

概要

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In order to establish a routine procedure for the quality control of mass-reared Dacus cucurbitae COQUILLETT, six acoustic properties of tethered flight sounds of the wild (W-), mass-reared nonirradiated (M-), and ^<60>Co-irradiated (I-) strains of the male flies were examined in eight age groups. By multivariate analyses we determined that the most effective factors for discriminating between strains were; parameters of fundamental frequency, peak power density of the fundamental frequency, total harmonic distortion, and the bandwidth of the fundamental frequency at ages of 5,13,9,and 22 days. Mahalanobis' D^2 obtained on six acoustic parameter variables in a linear discriminant analysis showed that the overall relative differentiatin between W- and M-strains was 1.3,and that between W- and I- strains was 1.4,times as large as it was between M- and I-strains. Histographical records produced by this discriminant analysis will be useful in monitoring the laboratory-reared strain for timely warning of qualitative changes before release.
日本応用動物昆虫学会の論文
1987-08-25