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Interspecific mating bias may drive Aedes albopictus displacement of Aedes aegypti during its range expansion

发布时间:2022年04月14日 浏览次数:

Jiayong Zhou#, Shuang Liu#, Hongkai Liu, Zhensheng Xie, Liping Liu, Lifeng Lin, Jinyong Jiang, Mingdong Yang, Guofa Zhou, Jinbao Gu, Xiaohong Zhou, Guiyun Yan, Anthony A. James, Xiao-Guang Chen*


ABSTRACT

Aedes albopictus and Ae. aegypti are highly-invasive mosquitoes and important vectors of arboviruses that cause disease in humans, which make them major public health threats. Both species have sympatric and allopatric populations and appear to be in competition where they overlap with Ae. albopictus often displacing Ae. aegypti. We show that there is sex-based, asymmetric interspecific mating between the two species in China that is characterized by stronger interspecific mating of male Ae. albopictus and higher intraspecific re-mating by female Ae. albopictus that may drive Ae. albopictus displacement of Ae. aegypti during its range expansion. These findings confirm and extend previous studies on interspecific competition between the two species and could benefit novel mosquito control methods and prevent mosquito-borne diseases.

PNAS nexus. 2022.

DOI : https://doi.org/10.1093/pnasnexus/pgac041