Effects of reserpine on reproduction and serotonin immunoreactivity in the stable fly Stomoxys calcitrans (L.)

► Sperms in testes and spermathecae of the male and female stable flies were visualized using two fluorescent dyes. ► Adult stable flies were fed with reserpine-treated cattle blood to deplete biogenic amines. ► Reserpine treatment significantly reduced the rate of successful mating by males and oviposition by females. ► The amine-depleting effect of reserpine was confirmed by immunohistology of serotoninergic neurons innervating male testes.