アカボシゴマダラとゴマダラチョウの休眠後の活動開始に及ぼす温度の影響
2019 年 70 巻 2 号 p. 59-63
詳細
2019 年 70 巻 2 号 p. 59-63
In order to investigate the time of initiation of post-diapause development, we reared diapausing larvae of introduced Hestina assimilis assimilis and native H. persimilis japonica, with a photoperiod of 14L-10D under four regimes of constant temperatures (15.0℃, 17.5℃, 20.0℃ and 22.5℃) and one regime of increasing temperature (10.0℃- 28.0℃). On the lowest temperature regime, the larvae of H. a. assimilis awoke slightly earlier than those of H. p. japonica. On the increasing temperature regime, the larvae of H. a. assimilis awoke from 12℃ and showed many individual differences, while those of H. p. japonica awoke from 14℃ with limited individual differences. The larvae of H. a. assimilis probably secure and dominate food resources more quickly and have a higher adaptability to spring climates. Hestina a. assimilis may have spread its distribution range in Japan due to the above factors.
