THE PATTERN OF SPREAD OF INVADING SPECIES - 2 LEAF-MINING MOTHS COLONIZING GREAT-BRITAIN
THE PATTERN OF SPREAD OF INVADING SPECIES - 2 LEAF-MINING MOTHS COLONIZING GREAT-BRITAIN
复制标题
DOI：
10.2307/5757
复制
发表时间：
1995-03-01
影响因子：
4.8
通讯作者：
LAWTON, JH
中科院分区：
文献类型：
--
作者：
NASH, DR;AGASSIZ, DJL;LAWTON, JH
1. 两种采叶蛾（Phyllonorycter）于 20 世纪 80 年代中期在英国定居，它们都以引进的花园和观赏植物为食：P. leucographelln 吃火棘属植物，P. platani 吃法国悬铃木属植物 2。对这两个物种的分布和传播进行了为期 5 年和 3 年的系统调查。还研究了人类对驱散这两种飞蛾的影响。 3．在这两种情况下，范围的平方根与时间之间的关系都非常线性，这表明飞蛾的传播可以被视为简单的行波。该波的速度对于P. leucographella 为10.3 km a(-1)，对于P. platani 为8.6 km a(-1)。4。与预测的一系列同心圆传播模式略有偏差。对于 P. leucographella 来说，这些现象的部分解释是城市化的变化，而城市化与寄主植物的密度相关。5。由于人类活动，在主要范围之外发现了几个定殖焦点。在主要进展附近也有人为扩散的证据，但这不足以掩盖检测到的简单模式。
1. Two leaf-mining moths in the genus Phyllonorycter colonized Great Britain in the mid-1980s, both feeding on introduced garden and amenity plants: P. leucographelln on Pyracantha spp., and P. platani on Platanus spp.2. Systematic surveys of the distribution and spread of the two species were carried out spanning a period of 5 and 3 years. The effect of humans in dispersing the two moths was also studied.3. The relationship between the square root of the range and time was in both cases remarkably linear, suggesting that the spread of the moths can be viewed as a simple travelling wave. The velocity of this wave was 10.3 km year(-1) for P. leucographella and 8.6 km year(-1) for P. platani.4. There were slight deviations from the predicted pattern of spread as a series of concentric circles. For P. leucographella these are partially explained by variations in urbanization, which is correlated with the density of host plants.5. Several foci of colonization outside the main range were detected, due to human activities. There was also evidence of artificial spread in the vicinity of the main advance, but this was not sufficient to obscure the simple pattern detected.