Ticks are blood feeders with an almost worldwide distribution. Most active stages require blood as a nutritive source and, in the case of adults, for sperm or egg production. Because of the mechanical processes and salivary secretions associated with blood feeding, the tick-host parasitic interaction is complex.

• General Aspects
• General Morphology
• Tick Species
• Sensory Organs
• Tick Feeding
• Developmental Cycle

Figure 1: Adult female engorged tick