Medical Entomology and Zoology
Online ISSN : 2185-5609
Print ISSN : 0424-7086
ISSN-L : 0424-7086
Some considerations on the distribution pattern of the mosquito Aedes albopictus (Skuse) and the practical usefulness of the log (x+1) transformation for the field collection data
Kiyoshi MAKIYA
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1976 Volume 27 Issue 4 Pages 399-404

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Abstract
Some ecological considerations were made on the distribution pattern of egg, larval (pupal) and imaginal populations of Aedes albopictus in a cemetery area of Nagoya City, central Japan in 1972. The mean crowding (m^^^*)-mean density (m) relation, or m^^^*=α+βm, was applied to the observed individual counts in order to analyze the distribution pattern of the mosquitoes of each stage. The results indicate that the basic components of the spatial distribution seem to be groups of several individuals, and that such small groups of each stage mosquito distribute aggregatively in the area. Two transformation formulae, y=log(x+1) and z=sin h^<-1>√<(β-1)/(α+1)x>, were compared in their efficiencies of stabilizing variance and normalizing variate frequency distribution, with a result that the former transformation was as useful as the latter.
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© 1976 The Japan Society of Medical Entomology and Zoology
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