Table 4.

Changes of body weight of larva, nymph, and adult D. nuttalli before and after feeding.

Developmental stage	Number of ticks	Unfed (mg) (Mean ±SD)	Engorged (mg) (Mean ±SD)	Weight ratio (engorge/unfed)
Original
Adult male	25	7.48 ± 0.37	8.12 ± 0.41	1.09
Adult female	25	8.80 ± 0.62	656.00 ± 29.77	74.50
First generation under laboratory conditions
Larva	100	0.05 ± 0.00	0.55 ± 0.07	11.00
Nymph	100	0.38 ± 0.05	24.83 ± 2.39	65.34
Adult male	25	9.48 ± 0.45	10.05 ± 0.66	1.06
Adult female	25	8.68 ± 0.48	283.28 ± 89.79	31.97

SD, standard deviation.