Climate Change Fuels Invasive Mantis Invasion in Europe

Two species of Asian praying mantises, Hierodula tenuidentata and Hierodula patellifera, are rapidly establishing themselves across Europe. Climate change and urban heat islands have created favorable conditions, allowing these invasive species to expand their territory northward from their native South Asia. Researchers are concerned about the displacement of native praying mantis populations.

These invasive mantises possess significant reproductive advantages, laying twice as many eggs as their native counterparts. Furthermore, their young exhibit lower rates of cannibalism, leading to higher survival rates. Invasive females also pose a threat by killing native males after mating, further impacting native species numbers.

An unexpected ally in controlling the invasive mantis population has emerged: domestic cats. Studies indicate that cats have reduced invasive mantis numbers by 45%. However, this also leads to the predation of native mantises, posing a complex conservation challenge.

Efforts to combat the spread involve citizen science initiatives, where over 2,300 reports have been collected. Additionally, citizens are encouraged to remove invasive egg cases during winter, though expert consultation is advised to ensure accurate identification and removal.