Broufas G
Faculty of Agriculture, Laboratory of Applied Zoology and Parasitology, Aristotle University of Thessaloniki, 540 06 Thessaloniki, Greece.
Exp Appl Acarol. 2001;25(12):921-32. doi: 10.1023/a:1020623827384.
The course of diapause induction as well as of diapause termination in females of the predatory mite Euseius (Amblyseius) finlandicus Oudemans (Acari: Phytoseiidae) in Northern Greece was determined by transferring females during winter and early spring from peach trees to a short day (LD 8:16) or a long day (LD 16:8) photoperiod both at 20 degrees C. The first diapause females were found in mid September and by the first week of October all the females were in diapause. The mean number of days required for diapause termination under the short day photoperiod LD 8:16 was gradually reduced from 93.7 days in the beginning of October to less than 20 days in mid February and early March. Under the long day photoperiod of LD 16:8 diapause was terminated in less than 20 days irrespective of the date of collection. These results indicate that by mid February photoperiodic sensitivity of females was lost and diapause was terminated. However, females were found in their overwintering sites until the second half of March, probably because of the prevailing relatively low temperatures and lack of adequate food.
通过在冬季和早春将希腊北部捕食螨芬兰真绥螨（Euseius (Amblyseius) finlandicus Oudemans，蜱螨亚纲：植绥螨科）的雌螨从桃树上转移到20摄氏度的短日照（光照周期为8:16）或长日照（光照周期为16:8）光周期环境中，确定了其滞育诱导过程以及滞育终止过程。最早在9月中旬发现滞育雌螨，到10月的第一周，所有雌螨均进入滞育状态。在短日照光照周期LD 8:16下，滞育终止所需的平均天数从10月初的93.7天逐渐减少至2月中旬和3月初的不到20天。在长日照光照周期LD 16:8下，无论采集日期如何，滞育均在不到20天内终止。这些结果表明，到2月中旬，雌螨的光周期敏感性丧失，滞育终止。然而，雌螨在越冬地点一直待到3月下旬，这可能是由于当时普遍存在的相对低温以及缺乏充足食物。
