Agricultural and Forest Entomology (2015) 17, 214-222

Li Zhao, Peng Hou, Gengping Zhu, Min Li, Tongxin Xie and Qiang Liu (2015)
Mapping the disjunct distribution of introduced codling moth Cydia pomonella in China
Agricultural and Forest Entomology 17 (2), 214-222
Abstract: - Eastern China was once listed as an area infested with the invasive codling moth Cydia pomonella L. (Lepidoptera: Tortricide). Intensive efforts later revealed the absence of such infestation. Currently, the majority of the population is distributed in western China. A disjunct population is also observed in the north east.
- In present study, the disjunct distribution was interpreted by mapping the climate dimension and potential distribution using an ecological niche modelling approach. The preferred niche models were utilized to identify the relative roles of climate, human influence and vegetation with respect to the present distribution and also to extrapolate the climate dimensions suitable for the codling moth in China.
- The results of the present study suggest that a combination of climate suitability and human influence explain the range expansion. Undistributed areas in eastern China were found to have low to medium climate suitability. Nonetheless, these areas belong to apple-growing regions that have high propagule pressure; thus, eventual establishment appears to be possible because of host plant availability, human activity and the wide ecological flexibility of the moth.
- Highly suitable habitats were found to be strongly related to high temperature and low precipitation throughout the year, whereas areas with low temperature and plenty of rainfall are unfavourable.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Gengping Zhu

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution
environment - cropping system/rotation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Cydia pomonella