積雪寒冷都市札幌市における不快小動物類発生の現状とその特徴

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As a part of the comprehensive research "Analyses and assessments of environmental change in the urbanization of snowy and cold regions", the faunal dynamics of urban pests in Sapporo was studied on the basis of the data collected by municipal health centers. The figures in Sapporo were further compared with those in some other cities of Japan. Main results were : 1. In the cities of Hokkaido, northernmost Japan, ants and sow bugs were commonly dominant among the urban pests hated by citizen, whereas central to southern Japan was dominated by mosquitoes. 2. In Sapporo, however, the troubles by those two pests have been dwindling in recent years probably due to the improvement of the architectural style. In contrast, wasps were increasingly bothering the citizen especially of West Ward and South Ward where woodland inhabited by wasps was rapidly turned into housing lots. 3. The fauna of the urban pests seemed to change with the growth of city. In the small to medium cities, the fauna was dependent on the climatic conditions of the region concerned. When the population overed one million people, however, faunae were apt to converge into similar make-up where ticks and wasps became dominant. The frequency of the wasp troubles was correlated with the scale of deforestation for housing lots. At the population level of about two million, the wasps dwindled away with the contraction of woodland while cockroaches increased with the expansion of amusement quarters.
北海道大学の論文
1987-08-17

積雪寒冷都市札幌市における不快小動物類発生の現状とその特徴

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