Three @entity742 were infested 4 times with 100 Amblyomma americanum tick pairs and kept indoors until the natural termination of the @entity277 . Characteristics of the tick populations that show efficiency of feeding, fertility, and offspring development, and ELISA antibodies to tick salivary gland extracts were studied at each @entity277 . On average, female ticks fed on tick-naive @entity742 detached at 12.1 +/- 0.2 (mean +/- standard error) days, weighed 492 +/- 16.8 mg, engorged 40.7 mg per day, and 35% survived to detachment during the first @entity277 . During the fourth @entity277 , they detached at 17.3 +/- 0.8 days, weighed 321 +/- 14.4 mg, engorged 18.8 mg per day on average, and 23% survived to detachment. On average, oviposition of female ticks fed on tick-naive @entity742 started at 11.8 +/- 0.6 days of detachment, the egg mass weighed 236 +/- 13.2 mg, 43% of the female weight turned into eggs, and 89% of the ticks that detached survived to oviposition during the first @entity277 . During the fourth @entity277 , oviposition started at 15.1 +/- 0.5 days, the eggs weighed 103 +/- 9.9 mg, 13% of the tick weight became eggs, and 67% of the ticks survived to oviposition. On average, eclosion started at 35.4 +/- 0.9 days of oviposition and 83% of the egg batches hatched in the first @entity277 . During the fourth @entity277 , eclosion started on day 34.9 +/- 0.7, and 47% of the egg batches hatched. Anti-tick resistance was expressed as an inhibition of feeding, fertility, and offspring development.(ABSTRACT TRUNCATED AT 250 WORDS)

Manifestations of immunity in XXXX repeatedly infested with Amblyomma americanum ticks.

@entity742 :: ('9940', 'Species') :: ['sheep'] @entity277 :: ('MESH:D013984', 'Disease') :: ['infestations', 'infestation']
@entity742 :: (9940,Species) :: ['sheep']
