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- Title
Overwintering, cold tolerance and supercooling capacity comparison between Liriomyza sativae and L. trifolii, two invasive leafminers in China.
- Authors
Zhang, Qikai; Wu, Shengyong; Wang, Haihong; Xing, Zhenlong; Lei, Zhongren
- Abstract
Liriomyza sativae Blanchard and Liriomyza trifolii (Burgess) are two highly polyphagous pests that successively invaded China in the 1990s and 2000s, respectively, threatening vegetable and horticultural plants. Competitive displacement of L. sativae by L. trifolii occurred during the expansion process of the latter in southern China, while whether L. trifolii can expand their range to northern China remains unclear. Overwintering and cold tolerance capacity largely determine the species distribution range and can affect species displacement through overwintering and phenology. In this study, we compared the overwintering potential, cold tolerance and supercooling point (SCP) between these two leafminer species. Our results showed that L. trifolii can overwinter at higher altitudes than L. sativae. In addition, we found that they can both successfully overwinter in greenhouses in northern China, and the overwintering capacity of L. trifolii was higher than that of L. sativae. Moreover, the extreme low-temperature survival of L. trifolii was significantly higher than that of L. sativae, and the SCP of the former was lower than that of the latter. We thus conclude that the overwintering and cold tolerance capacity of L. trifolii is much better than that of L. sativae. Our findings indicate that L. trifolii has the potential to displace L. sativae and expand its range to northern China. Moreover, our results have important implications for predicting overwinter ranges and developing management strategies for invasive leafminers in China.
- Subjects
CHINA; LEAFMINERS; SUPERCOOLING; SPECIES distribution; PHENOLOGY; ALTITUDES
- Publication
Journal of Pest Science, 2022, Vol 95, Issue 2, p881
- ISSN
1612-4758
- Publication type
Article
- DOI
10.1007/s10340-021-01420-0