It looks like a single tick may produce 500 - 15,000 ticks per "ovipostion" (egg-laying session).
LABORATORY STUDIES ON THE OVIPOSITION, EGG-SIZES AND SHAPES AND EMBRYONIC DEVELOPMENT OF DERMACENTOR VA RIA BILlS, RHIPICEPHALUS SANGUINEUS AND AMBLYOMMA MACULATUM http://www1.montpellier.inra.fr/cbgp/acarologia/export_pdf.p...