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The Influence of Number of Generations on the Dynamics of Lime Leaf Miner Phyllonorycter issikii (Kumata, 1963) (Lepidoptera, Gracillariidae) in Udmurtia
Russian Journal of Biological Invasions Pub Date : 2021-03-31 , DOI: 10.1134/s2075111721010057
I. V. Ermolaev , T. B. Domrachev

Abstract

The influence of the number of generations on the dynamics of lime leaf miner Phyllonorycter issikii (Kumata, 1963) was investigated for the first time on four sample plots in the city of Izhevsk (Udmurtia) within the period from 2001 to 2020. The existence of the second generation of the miner depends on the climatic features of the season. The second generation of the miner was observed under the condition that the first generation of the species managed to complete its development in the last ten days of June. If this happened in July, there was no second generation. The variability of phenology influences the dynamics of the invasive species. The density of miner population in limes grew in the current year if in the previous season there was only one generation of the miner. The figure fell if in the previous season there were two generations. The reduction of Ph. issikii density per year with two generations could have occurred owing to a decrease in life span and the actual fecundity of females, as well as the survival rate of the second generation of the miner. This led to a significant reduction in the number of wintering moths.



中文翻译:

世代数对乌德穆尔特州石灰叶矿工Phyllonorycter issikii(Kumata,1963)(鳞翅目,c科)动力学的影响

摘要

世代数对石灰制叶机Phyllonorycter issikii动力学的影响(Kumata,1963年)在2001年至2020年期间首次在伊热夫斯克市(乌德穆尔蒂亚)的四个样地上进行了调查。第二代矿工的存在取决于季节的气候特征。观察到第二代矿工是在第一代物种设法在6月的最后十天完成其开发的条件下进行的。如果这发生在七月,就不会有第二代。物候学的变异性会影响入侵物种的动态。如果在上一个季节中只有一代矿工,那么石灰中矿工人口的密度将在今年有所增长。如果上个赛季有两代人,这个数字就会下降。伊西奇伊氏菌的减少由于寿命缩短和女性的实际生育能力下降,以及第二代矿工的成活率下降,两代人每年都可能发生密度上升。这大大减少了越冬蛾的数量。

更新日期:2021-03-31
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