Overwintering, cold tolerance and supercooling capacity comparison between Liriomyza sativae and L. trifolii, two invasive leafminers in China

Liriomyza sativae Blanchard and trifolii (Burgess) are two highly polyphagous pests that successively invaded China in the 1990s 2000s, respectively, threatening vegetable horticultural plants. Competitive displacement of L. by occurred during expansion process latter southern China, while whether can expand their range to northern remains unclear. Overwintering cold tolerance capacity largely determine species distribution affect through overwintering phenology. In this study, we compared potential, supercooling point (SCP) between these leafminer species. Our results showed overwinter at higher altitudes than sativae. addition, found they both successfully greenhouses was Moreover, extreme low-temperature survival significantly sativae, SCP former lower latter. We thus conclude is much better findings indicate has potential displace its China. our have important implications for predicting ranges developing management strategies invasive leafminers