How long do ticks live after a bite? - briefly
After engorgement, a tick generally survives for several weeks, while adult females of some species may remain alive for up to a year before laying eggs. Most ticks die within 2–4 weeks after detaching from the host.
How long do ticks live after a bite? - in detail
Ticks remain alive for a limited period after they detach from a host. Once engorged, an adult female typically completes egg production within 1–2 weeks and then dies. Males, which do not take a large blood meal, may survive several weeks after mating, but most perish within a month when environmental conditions become unfavorable.
Survival after detachment depends on temperature, humidity, and species. Warm, moist environments extend life expectancy, whereas dry or cold conditions accelerate mortality. The following approximate durations apply to common North‑American species:
- Ixodes scapularis (black‑legged tick): females die 7–14 days post‑detachment; males survive up to 30 days.
- Dermacentor variabilis (American dog tick): females cease activity 10–15 days after feeding; males persist for 20–25 days.
- Amblyomma americanum (lone star tick): females live 10–12 days after engorgement; males may remain viable for up to 28 days.
Even after removal, a tick can retain viable pathogens for several days, maintaining the potential for transmission if reattached. Prompt disposal of the specimen eliminates the risk of prolonged survival and subsequent bites.