Markum B A, Nollen P M
Department of Biological Science, Western Illinois University, Macomb 61455, USA.
J Parasitol. 1996 Aug;82(4):662-3.
Egg cultures of Echinostoma caproni were exposed to 25-W incandescent light at control intensities (9.7 mumol s-1 m-2) and reduced intensities (1.0, 0.5, 0.25, 0.125, 0.06, 0.03, and 0.01 mumol s-1 m-2). Low intensities of light did not affect the diurnal hatching rhythm of the miracidia, with maximum hatching occurring from 1200 to 1300 hr. However, at 0.5, 0.25, and 0.125 mumol s-1 m-2, hatching was delayed 2 days at each interval. From 0.06 to 0.01 mumol s-1 m-2, hatching still occurred, but at 17 days of development rather than at the 11.3-day average found under illumination with a 25-W incandescent light. No appreciable hatching was observed in cultures kept in the dark.
卡氏棘口吸虫的虫卵培养物分别在对照强度（9.7微摩尔·秒⁻¹·米⁻²）和降低强度（1.0、0.5、0.25、0.125、0.06、0.03和0.01微摩尔·秒⁻¹·米⁻²）下接受25瓦白炽灯照射。低强度光照不影响毛蚴的昼夜孵化节律，最大孵化发生在1200至1300时。然而，在0.5、0.25和0.125微摩尔·秒⁻¹·米⁻²时，每次间隔孵化延迟2天。在0.06至0.01微摩尔·秒⁻¹·米⁻²时仍有孵化，但发育到17天时才孵化，而不是在25瓦白炽灯照射下平均11.3天的发育时间孵化。在黑暗中保存的培养物未观察到明显孵化。
