To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 4 Variation in size of the feeding pool during phase 2d of Ornithodoros rostratus engorgement on mice. Video shows images represented in figure 2K. Physiological characterization of the hematophagy of Ornithodoros rostratus (Acari: Argasidae) on live hosts Gabriel Cerqueira Alves Costa, Adriana Coelho Soares, Marcos HorĂ¡cio Pereira, Nelder Figueiredo Gontijo, MaurĂcio Roberto Viana Sant'Anna, and Ricardo Nascimento Araujo Journal of Experimental Biology 2016. 219:3656-3664; doi: 10.1242/jeb.144246 Download Original Video