飞行前恒磁场处理对卤虫卵搭乘我国“8885”卫星后发育的影响

干燥卤虫冬卵预先用300—600×10~(-4)T非均匀恒磁场处理113h,再搭乘我国“8885”卫星飞行8天。飞行完成后第10,31,65和227天进行孵育,观察早期发育速度及孵出能力。结果:(1)卤虫卵受磁场处理后,早期发育速度明显提高;(2)磁场处理会增强卤虫卵对空间飞行不利影响(早期发育延缓及孵出率下降)的耐受力,并促进其从受影响状态下的恢复;(3)磁场处理对卤虫卵所产生的潜在生物学作用是相当持久的,至少在处理后的第318天(飞行后第227天)仍可在发育过程中明显表现出来。     

EFFECT OF PRE-FLIGHT TREATMENT WITH CONSTANT MAGNETIC FIELD ON DEVELOPMENT OF Artemia EGGS RETRIEVED FROM CHINESE SATELLITE “8885”

Dry winter eggs of Artemia salina were treated with a 30--60 mT inhomogeneous constantmagnetic field for 113 h, and then carried by Chinese Satellite "8885" to its spaceflight for 8days. Their early development rate and hatching ratio were observed on the 10th, 31st, 65thand 227th days after the accomplishment of the flight. Three main results were obtained asfollows: (i) The treatment accelerated the development of the eggs not flown; (ii) it also en-hanced the resistance of the flown eggs against unfavorable spaceflight effects (retarding ear-ly development and lowering the hatching ratio), and promoted the recovering ability of theflown eggs from the affected state; and (iii) the latent beneficial effect produced by treatmentwas found to be very durable, still appearing in the development of the treated eggs on the318th day after treatment (the 227th day after the flight).