Dispersal of diapausing Tetranychus urticae and T. kanzawai
Dispersal of diapausing Tetranychus urticae and T. kanzawai
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滞育二斑叶螨和神泽叶螨的扩散
DOI：
10.1111/eea.12467
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发表时间：
2016
影响因子：
1.9
通讯作者：
Shuichi Yano & Hiroshi Amano
中科院分区：
文献类型：
--
作者：
Noureldin Abuelfadl Ghazy;Hatsune Otsuki;Tomoe Sekido;Shuichi Yano & Hiroshi Amano
叶螨 Tetranychus urticae Koch 和 Tetranychus kanzawai Kishida（螨虫：Tetranychidae）主要以交配的滞育雌性成虫越冬。它们的越冬生存部分取决于它们向合适的栖息地的扩散。我们根据已知影响非滞育螨扩散的因素（光、种群密度、重力和湿度）研究了滞育雌性二斑螨和T. kanzawai 的扩散行为。总体而言，在所有测试条件下，二斑玳瑁的滞育雌性都表现出比神泽玳瑁更强的分散倾向。高人口密度促进了滞育二斑斑锥虫的扩散，但没有促进坎泽斑锥虫的扩散。两个物种的滞育雌性的分散并没有受到重力、湿度或摄食损害是由同种还是异种引起的显着影响。在植物上，向下移动的二斑玳瑁（T. urticae）数量多于神泽玳瑁（T. kanzawai）。我们认为，滞育开始后的扩散可能是二斑玳瑁的重要生活史策略，但对于神泽玳瑁来说则不然。
The spider mites Tetranychus urticae Koch and Tetranychus kanzawai Kishida (Acari: Tetranychidae) overwinter mostly as mated adult diapausing females. Their overwintering survival depends in part on their dispersal towards suitable habitats. We investigated the dispersal behaviour of diapausing females of T. urticae and T. kanzawai with respect to factors known to affect the dispersal of non-diapausing mites: light, population density, gravity, and humidity. In general, diapausing females of T. urticae showed a stronger tendency to disperse than did those of T. kanzawai under all test conditions. High population density promoted the dispersal of diapausing T. urticae, but not of T. kanzawai. Dispersal of diapausing females of both species was not significantly affected by gravity, humidity, or whether feeding damage was caused by conspecifics or heterospecifics. On plants, more T. urticae than T. kanzawai moved downward. We propose that dispersal after the onset of diapause may be an important life-history strategy in T. urticae, but not in T. kanzawai.