アカイエカ(CULEX PIPIENS PALLENS)幼虫の飼育個体密度と生長速度
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概要
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The larvae of Japanese red house mosquito (Culex pipiens pallens) were bred in room temperature (20〜27℃) in various population densities (from an individual per 20cc (distilled water) to 80 per 20cc) using petri dish (56mm in diameter). In the first experiment, the breeding medium (the initial medium was distilled water) was not renewed. The sufficient food (dried yeast) was given. In one or three individuals per 20cc medium, the emergence occurs by 11 days after incubation, but in the higher densities, the longer period it takes. In the densities more than five individuals per 20cc medium, the emergence takes place after getting lower density (two or five per 20cc). In the second experiment, the breeding medium was renewed every day. The similar results are obtained except for the number of larvae which can live in a unit volume. In the third experiment, 17 larvae which had been bred for six days were divided into four ; one, five and six individuals per 20cc distilled water. The larva which is bred alone gets develope into an adult. In the case of larvae which are bred in five per 20cc initial medium the emergence is delayed. The larvae which are bred in five or six larvae per 20cc distilled water take longer developmental period. From the above, it may be concluded that the larvae require a definite volume of medium, in which they live, for the finishing their larval development, and thus the minimum volume per individual required for further development of larvae in each stage is calculated.
- 日本生態学会の論文
- 1963-08-01