Tanaka A
Growth. 1985 Autumn;49(3):293-305.
Effects of repeated carbon dioxide anesthesia during particular instars on the number of molts, larval duration and the body size of resulting adults were investigated. Concentration of carbon dioxide administered was 70%, and each anesthesia lasted for 5 min. Anesthesia was repeated four times during a particular instar. Anesthesia administered during the 1st, 2nd, or 3rd instar increased the number of instars required to reach maturity. When larvae were anesthetized during both the 1st and 2nd instar, the number of instars was greatly increased. However, anesthesia during the 4th instar scarcely influenced the number of instars. On the other hand, repeated anesthesia prolonged larval duration whenever administered from the 1st instar through the 4th. The body size of resulting adults remained almost the same as that for controls after the repeated carbon dioxide anesthesia during larval life. Detailed analyses of adult sizes, however, revealed that tibia length was more affected with the gas than femur length. The ratio of tibia length to femur length was also influenced by the experience of extra molt(s).
研究了在特定龄期重复进行二氧化碳麻醉对蜕皮次数、幼虫期持续时间以及羽化后成虫体型大小的影响。所施用的二氧化碳浓度为70%，每次麻醉持续5分钟。在特定龄期重复麻醉4次。在第1、2或3龄期进行麻醉会增加达到成熟所需的龄期数。当幼虫在第1和第2龄期均接受麻醉时，龄期数会大幅增加。然而，在第4龄期进行麻醉几乎不影响龄期数。另一方面，无论从第1龄期到第4龄期的哪个阶段进行重复麻醉，都会延长幼虫期持续时间。幼虫期经历重复二氧化碳麻醉后，羽化后成虫的体型大小与对照组几乎相同。然而，对成虫体型的详细分析表明，与股骨长度相比，胫骨长度受该气体的影响更大。胫骨长度与股骨长度的比例也受额外蜕皮经历的影响。
