Niva Cintia Carla, Takeda Makio
Graduate School of Science and Technology, Kobe University, Rokkodai 1-1, Nada, Kobe, 657 8501, Japan.
Comp Biochem Physiol B Biochem Mol Biol. 2002 Jul;132(3):653-60. doi: 10.1016/s1096-4959(02)00081-7.
Halyomorpha brevis (Heteroptera: Pentatomidae) produces adults with different color patterns, most noticeable in the sternum. The color, ranging from ivory to red, depends on the extent of the accumulation of red pigment. The present work investigated the effects of photoperiod, temperature and aging on the pigmentation. The red pigment was identified as erythropterin by comparing the Rf with standard pteridines in paper chromatography in three solvent systems. Erythropterin was found in all organs, red or light red. Uric acid was detected prominently in ivory or light red sternum. A negative correlation was found between the extent of red pigmentation and that of uric acid content. The relative proportion of males and females with a red sternum progressively increased as they aged from day 0 to day 20 after adult emergence, particularly in males reared under a long day (non-diapausing). In males, an age-dependent decrease in red pigmentation was observed in the gastric ceca and tracheae. The sternum was lighter in short-day adults (diapausing) than that in non-diapausing adults at the same age, and the latter never achieved the intense red color. The possible functions of pteridines are discussed.
短突蝽（半翅目：蝽科）成虫具有不同的颜色模式，在胸节最为明显。颜色从象牙色到红色不等，取决于红色素积累的程度。本研究调查了光周期、温度和老化对色素沉着的影响。通过在三种溶剂系统的纸色谱法中将比移值（Rf）与标准蝶啶进行比较，确定红色素为红蝶呤。在所有红色或浅红色的器官中都发现了红蝶呤。在象牙色或浅红色的胸节中显著检测到尿酸。发现红色素沉着程度与尿酸含量之间呈负相关。从成虫羽化后第0天到第20天，随着年龄增长，胸节为红色的雄性和雌性的相对比例逐渐增加，尤其是在长日照（非滞育）条件下饲养的雄性。在雄性中，观察到胃盲囊和气管中的红色素沉着随年龄增长而减少。短日照成虫（滞育）的胸节比同龄非滞育成虫的胸节颜色浅，且后者从未达到深红色。文中讨论了蝶啶的可能功能。
