Mammalophilic feeding behaviour of Culex quinquefasciatus mosquitoes collected in the cities of Chetumal and Cancun, Yucatán Peninsula, Mexico

Trop Med Int Health. 2015 Nov;20(11):1488-1491. doi: 10.1111/tmi.12587. Epub 2015 Aug 28.

Abstract

Objective: The studie describes the blood-feeding behaviour of mosquitoes in Mexico, to understand host-vector relationships and dynamics of disease transmission.

Methods: From September 2012 to November 2012 and in November 2013, 911 blood-fed Cx. quinquefasciatus mosquitoes were collected with aspirators inside houses in Chetumal and Cancun. Blood meals were analysed by PCR and subsequent Sanger sequencing of the cytochrome b gene.

Results: 93.3% of mosquitoes fed on mammals, 6.5% on birds and 0.2% on reptiles. The most frequent vertebrate hosts were humans (65.4%), dogs (23.2%), chicken (5.4%), cattle (2.2%) and cats (1.8%).

Conclusions: Cx. quinquefasciatus most frequently fed on humans and dogs in both studied cities, which is in contrast to a previous study that demonstrated lower prevalence of mammalian blood in engorged Cx. quinquefasciatus.

Keywords: Culex quinquefasciatus; PCR; Humano; Mexico; Mexique; Méjico; Pájaro; Reptil; bird; comportement alimentaire lié à l'hôte; conducta de alimentación; host-feeding behaviour; humain; human; oiseau; reptile.