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Background   Aedes koreicus  was detected in northern Italy for the first time in 2011, and it is now well established in several areas as a new invasive mosquito species. Data regarding the influence of temperature on mosquito survival and development are not available yet for this species.    Methods  We experimentally investigated the influence of different constant rearing temperatures (between 4 and 33 °C) on the survival rates and developmental times of different life stages of  Ae. koreicus  under laboratory conditions. The resulting data were subsequently used to inform a mathematical model reproducing the  Ae. koreicus  life-cycle calibrated to counts of adult females captured in the field in the autonomous province of Trento (northern Italy) between 2016 and 2018.    Results  We found that temperatures above 28 °C are not optimal for the survival of pupae and adults, whereas temperate conditions of 23–28 °C seem to be very favorable, explaining the recent success of  Ae. koreicus  at establishing into new specific areas. Our results indicate that  Ae. koreicus  is less adapted to local climatic conditions compared to  Ae. albopictus , another invasive species which has been invading the area for the last three decades. Warmer seasons, which are more likely to occur in the future because of climate change, might extend the breeding time and therefore increase the abundance of  Ae. koreicus  in the study region.    Conclusions  Our findings provide, to our knowledge, the first evidence on how temperature influences the bionomics and dynamics of  Ae. koreicus  and highlight the need for further studies on the phenology of this species in temperate areas of Europe.

First report of the influence of temperature on the bionomics and population dynamics of Aedes koreicus, a new invasive alien species in Europe