Abstract
Ticks released in the field at the point of either hatching (eggs) or molting (larvae and nymphs) showed no differences in survival between those scattered free in the vegetation and those confined in nylon mesh tubes. Although the mean maximum survival period did not differ significantly between the phases of release, the majority of the ticks released in July died much faster than those released in February and September. Larval survival periods were such shorter than those of nymphs and adults. All the stages have a similar survival pattern, which is characterized by a sudden disappearance rather than a gradual reduction in numbers.

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