Modulates blood feeding of female mosquitoes on vertebrate species by binding and sequestering different mediators involved in the host response, such as biogenic amines and eicosanoids. Binds serotonin, histamine, adrenaline, leukotriene C4, leukotriene D4, leukotriene E4, arachidonic acid and U-46619, a stable analog of thromboxane A2. Does not bind noradrenaline, leukotriene B4, ATP or ADP. Inhibits agonist-induced platelet aggregation and hemostasis