集合したチャバネゴキブリ幼虫の発育を促進する要因について
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概要
- 論文の詳細を見る
German cockroach, Blattella germanica nymphs reared in groups develop faster than those reared in isolation (aggregation effect).To determine the factors responsible for this phenomenon, seven rearing experiments (sets 1-7) were carried out. In each set, the nymphal developmental period was compared beween nymphs reared in isolation and in groups. In sets 1-4,the frequency of removal faeces from the rearing containers was modified among the experimental sets to determine the effect of the presence of faeces on the development rate. However, the difference in the developmental rate between the nymphs reared in isolation and in groups did not change proportionally to the intensity of removal of faeces. In sets 5 and 6,nymphs were reared with a much lower frequency of observations than in other sets to determine the effects of physical stimuli (contact with surroundings or shock) associated with the disturbance caused by observers on the developmental rate. The difference in the developmental rate between the individuals reared in isolation and in groups was greater in sets 5 and 6 than in sets 1-4. In set 7,nymphs were reared individually with or without olfactory stimuli supplied by other individuals. The developmental rate of the nymphs subjected to the stimuli was higher than that of nymphs not subjected to the stimuli. Both the physical and olfactory stimuli are considered to be important factors for the acceleration of the development of nymphs reared in groups.
- 日本応用動物昆虫学会の論文
- 1986-02-25