Prokopchak M J, Spangenberg D B, Shaeffer J
Department of Pathology, Eastern Virginia Medical School, Norfolk 23501.
Radiat Res. 1990 Oct;124(1):34-42.
With the aid of the Aurelia metamorphosis test system, the acute and subtle developmental and behavioral effects of X irradiation in the presence and absence of thyroxine on the Norfolk Aurelia aurita were described. Radiation doses were 0 (control), 50, 100, 150, 200, and 400 Gy. Morphology of the ephyrae, and statolith and rhopalia numbers were recorded using the light microscope. Developmental abnormalities of the polyps and ephyrae were recorded with the scanning electron microscope and light microscope. Major findings from this investigation were the absence of rhopalia and statoliths in ephyrae at 150 and 200 Gy, a reduction in pulses per minute in the ephyrae at 100, 150, and 200 Gy, a reduction in ephyrae released at 150, 200, and 400 Gy, and the development of polyp monsters. There was a significantly higher frequency of polyp monsters in the group exposed to thyroxine prior to radiation than in the thyroxine-free group prior to radiation.
借助海月水母变态试验系统，描述了有无甲状腺素情况下，X射线对诺福克海月水母的急性及细微发育和行为影响。辐射剂量分别为0（对照）、50、100、150、200和400戈瑞。使用光学显微镜记录碟状幼体的形态、平衡石和缘膜体数量。用扫描电子显微镜和光学显微镜记录水螅体和碟状幼体的发育异常情况。本次研究的主要发现包括：150和200戈瑞剂量下碟状幼体无缘膜体和平衡石；100、150和200戈瑞剂量下碟状幼体每分钟脉冲数减少；150、200和400戈瑞剂量下释放的碟状幼体数量减少；以及出现了水螅体畸形。辐射前暴露于甲状腺素的组中，水螅体畸形的发生率显著高于辐射前未接触甲状腺素的组。
