智利中部苹果园中苹果蠹蛾（鳞翅目：卷蛾科）的种群遗传结构

Population genetic structure of codling moth (Lepidoptera: Tortricidae) from apple orchards in central Chile.

作者信息

Fuentes-Contreras Eduardo, Espinoza Juan L, Lavandero Blas, Ramírez Claudio C

机构信息

Departamento de Producción Agricola, Facultad de Ciencias Agrarias, Universidad de Talca, Casilla 747, Talca, Chile.

出版信息

J Econ Entomol. 2008 Feb;101(1):190-8. doi: 10.1603/0022-0493(2008)101[190:pgsocm]2.0.co;2.

DOI:10.1603/0022-0493(2008)101[190:pgsocm]2.0.co;2

PMID:18330135

Abstract

Codling moth, Cydia pomonella (L.) (Lepidoptera: Tortricidae), is the main pest of pome fruits worldwide. Despite its economic importance, little is known about the genetic structure and patterns of dispersal at the local and regional scale, which are important aspects for establishing a control strategy for this pest. An analysis of genetic variability using microsatellites was performed for 11 codling moth populations in the two major apple (Malus domestica Borkh) cropping regions in central Chile. Despite the geographical distances between some populations (approximately 185 km), there was low genetic differentiation among populations (F(ST) = 0.002176), with only slight isolation by distance. Only approximately 0.2% of the genetic variability was found among the populations. Geographically structured genetic variation was independent of apple orchard management (production or abandoned). These results suggest a high genetic exchange of codling moth between orchards, possibly mediated by human activities related to fruit production.

摘要

苹果蠹蛾，即苹果小卷蛾（Cydia pomonella (L.)，鳞翅目：卷蛾科），是全球范围内梨果类水果的主要害虫。尽管其具有经济重要性，但对于其在局部和区域尺度上的遗传结构和扩散模式却知之甚少，而这些方面对于制定该害虫的防治策略至关重要。利用微卫星对智利中部两个主要苹果（Malus domestica Borkh）种植区的11个苹果蠹蛾种群进行了遗传变异性分析。尽管一些种群之间存在地理距离（约185公里），但种群间的遗传分化程度较低（F(ST) = 0.002176），仅存在轻微的距离隔离。在种群间仅发现约0.2%的遗传变异。地理结构上的遗传变异与苹果园管理方式（生产园或废弃园）无关。这些结果表明，苹果蠹蛾在果园间存在高度的基因交流，这可能是由与水果生产相关的人类活动介导的。