Survivorship and fecundity of Culex pipiens pallens feeding on flowering plants and seed pods with differential preferences

•The survival times of Cx. pipiens pallens were significantly affected by their sugar sources.•The ranking of survival of mosquitoes corresponded to their preferences to the nutritional regimes.•The inadequate production of sugar might result in the declines of survival times.•Feeding on different sugar sources affected the fecundity of mosquitoes.