墨西哥按实蝇在我国的适生性分析

Analysis of the suitability of Mexican fruit fly,Anastrepha ludens in China

墨西哥按实蝇是美洲地区严重危害水果生产的一种重要害虫。本研究采用CLIMEX模型与ArcGIS分析相结合的预测方法，明确了墨西哥按实蝇的CLIMEX参数指标体系和适生性评判标准，分析了该实蝇在我国的的适生范围和适生程度。研究发现冬季低温构成了影响墨西哥按实蝇分布的主要限制因素，墨西哥按实蝇在我国南部较为适生，分布在16．43～27．12°N，97．67～121．29°E和28．19～30．83°N，102．53～108．42°E范围内，其中云南、广西、广东、海南和台湾5省入侵并适生的可能性较高。鉴于该实蝇在我国南方地区适生范围较广，适生程度较高，我国应加强墨西哥按实蝇的植物检疫措施力度，严防该虫的传入。

Mexican fruit fly is an important insect pest causing considerable economic losses of fruits in America. With CLIMEX and ArcGIS approaches, the potential geographical distribution of Mexican fruit fly in China was predicted by confirming CLIMEX parameters and suitability scales. Through analyzing the result, it was found that the cold temperature in winter was the key factor for predicting potential distribution. The results showed that the Mexican fruit fly had a wide potential distribution area in south China, ranging from 16.43-27.12°N to 97.67-121.29°E and from 28.19-30.83°N to 102.53-108.42°E, especially in Yunnan, Guangxi, Guangdong, Hainan and Taiwan provinces with a high suitability. Main plant quarantine measures were discussed in order to prevent the introduction of Mexican fruit fly.