Nakamura K, Hodkova M
Department of Biology, Faculty of Science, Osaka City University, Sumiyoshi, Japan.
J Biol Rhythms. 1998 Apr;13(2):159-66. doi: 10.1177/074873098129000002.
The role of compound eyes in photoperiodic regulation of diapause and entrainment of circadian rhythms was studied in a hemipteran, Graphosoma lineatum. Bilateral removal of compound eyes resulted in the loss of locomotor rhythmicity under both 24-h light cycle and constant darkness. The arrhythmicity was associated with the loss of photoperiodic regulation of diapause. Females with removed compound eyes had similar incidence of oviposition under diapause preventing long-day photoperiod (light:dark [LD] 18:6) and diapause inducing short-day photoperiod (LD 12:12). By contrast, both locomotor rhythmicity and photoperiodic regulation of diapause were maintained after unilateral removal of compound eyes. The results suggest that the compound eye-optic lobe axis is involved in the transmission of light signals for both entrainment of rhythms in locomotor activity and photoperiodism. The compound eyes probably act as photoreceptors in both transmission chains. Sites of the clocks for the two phenomena are discussed.
在半翅目昆虫细纹草盲蝽（Graphosoma lineatum）中，研究了复眼在滞育的光周期调节和昼夜节律的同步化中的作用。双侧去除复眼导致在24小时光照周期和持续黑暗条件下运动节律丧失。这种无节律性与滞育的光周期调节丧失有关。去除复眼的雌性在防止滞育的长日照光周期（光照：黑暗[LD]18:6）和诱导滞育的短日照光周期（LD 12:12）下产卵发生率相似。相比之下，单侧去除复眼后，运动节律和滞育的光周期调节均得以维持。结果表明，复眼 - 视叶轴参与了用于运动活动节律同步化和光周期现象的光信号传递。复眼可能在这两个传递链中都充当光感受器。讨论了这两种现象的生物钟位点。
