Enslee Eugenie C, Riddiford Lynn M
The Biological Laboratories, Harvard University, 02138, Cambridge, Massachusetts, USA.
Wilehm Roux Arch Dev Biol. 1977 Jun;181(2):163-181. doi: 10.1007/BF00848440.
Embryos ofPyrrhocoris apterus exposed to juvenile hormone mimics (JH) were examined throughout development to determine the progressive effects of treatment. Prior to blastokinesis whole experimental embryos did not differ morphologically from control embryos fixed at the same stage. Treated embryos failed to complete blastokinesis due to abnormal breakage of the extra-embryonic membranes.In the embryo-larva transition, JH exposure interfered with dorsal closure, with the consolidation of the nerve cord, and with the extension of appendages. Yet pigmentation and muscle differentiation occurred.These effects were interpreted and discussed with reference to the role of juvenile hormone in post-embryonic development.
对暴露于保幼激素类似物（JH）的扁刺蛾胚胎在整个发育过程中进行了检查，以确定处理的渐进影响。在胚动之前，整个实验胚胎在形态上与处于相同阶段固定的对照胚胎没有差异。由于胚外膜的异常破裂，处理过的胚胎未能完成胚动。在胚胎-幼虫转变过程中，JH暴露干扰了背侧闭合、神经索的巩固以及附肢的延伸。然而色素沉着和肌肉分化仍会发生。参照保幼激素在胚后发育中的作用对这些影响进行了解释和讨论。
