Spatial distribution of galls caused by Aculus tetanothrix (Acari: Eriophyoidea) on arctic willows
Spatial distribution of galls caused by Aculus tetanothrix (Acari: Eriophyoidea) on arctic willows
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DOI：
10.1007/s10493-005-7551-y
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发表时间：
2005-12-01
影响因子：
2.2
通讯作者：
Skoracka, A
中科院分区：
文献类型：
--
作者：
Kuczynski, L;Skoracka, A
研究了破伤风蜱螨（阿卡里：瘿螨总科）在三种柳属植物上的虫瘿分布。分析了影响这种分布的因素，即杨柳种类、研究面积和枝条长度。还研究了茎内虫瘿分布的空间格局。该研究在俄罗斯科拉半岛进行。A.破伤风杆菌在杨柳种间差异显著。相当高的虫瘿密度记录在白色海岸比在Khibiny山脉。这可能是由于温和的海洋性气候的影响，有利于螨的发生相比，一个苛刻的和多变的山区气候，限制螨的丰度。虫瘿密度与枝长无相关性。虫瘿的最高密度记录在内部分支;分支内，有一个最大密度的第五叶。这种模式是重复的所有芽研究，独立于研究区域，杨柳物种和芽的长度，建议A的最佳条件。破伤风杆菌存在于茎中部的叶片上。这种分布模式可能是叶质量和螨沿枝沿着移动的成本和效益之间的权衡的结果。然而，这一假设需要通过实验来验证。
The distribution of galls caused by Aculus tetanothrix (Acari: Eriophyoidea) on three Salix species was studied. The factors influencing this distribution were analysed, i.e. willow species, study area and shoot length. Spatial pattern of gall distribution within the shoot was also examined. The study was conducted in Russia, Kola Peninsula. Densities of galls caused by A. tetanothrix differed significantly among willow species. Considerably higher gall density was recorded in the White Sea coast than in the Khibiny Mountains. This may be explained by the influence of a milder maritime climate that favors mite occurrence compared to a harsh and variable mountain climate that limits mite abundance. There was no relationship between the gall density and the shoot length. The highest density of galls was recorded on the inner offshoots; within the offshoot, there was a maximum density on the fifth leaf. This pattern was repeatable for all shoots studied, independent of the study area, willow species and length of shoots, suggesting the optimal conditions for A. tetanothrix exist on leaves in the middle part of a shoot. This distribution pattern may be an effect of the trade-off between the costs and benefits resulting from leaf quality and mite movement along the shoot. This hypothesis, however, needs to be tested experimentally.