Abstract
Studies on the reproductive biology of lone star ticks, Amblyomma americanum (L.), freshly collected from the field, ticks taken from a 25-year established colony, and ticks from reciprocal crosses between wild and colony ticks showed that colony ticks statistically differed significantly in several parameters. Engorged colony females weighed less, took longer to engorge, had longer preoviposition and oviposition periods, laid fewer eggs per female, converted less of the engorged weight to eggs, and had significantly lower egg hatch than wild females. Reciprocal crosses between wild and colony ticks indicated that most reproduction characteristics of wild females mated to colony males were similar to those of wild females mated to wild males; and colony females mated to wild males had reproduction characteristics similar to those of colony females mated to colony males. Reproduction data collected in 1970 of the colony strain were similar to current data from the same strain. Thus, lengthy periods of colonization affected most parameters of reproductive biology of A. americanum
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