| Autor: |
Clarke FC; Department of Biology, Medical University of Southern Africa, Medunsa., Els DA, Heller-Haupt A, Rechav Y, Varma MG |
| Jazyk: |
angličtina |
| Zdroj: |
Medical and veterinary entomology [Med Vet Entomol] 1989 Jan; Vol. 3 (1), pp. 35-9. |
| DOI: |
10.1111/j.1365-2915.1989.tb00472.x |
| Abstrakt: |
Acquired immunity in guinea-pigs and rabbits to immature stages of the two-host tick Rhipicephalus evertsi evertsi Neumann was demonstrated. Repeated infestations of both hosts with larvae resulted in a significant reduction in the weight of later engorged nymphs. A sharp decline in the numbers of nymphs which successfully fed on both hosts was also observed. This study provides evidence for a gradual decrease in the mean weight of engorged nymphs towards the end of the detachment period suggesting that, in two-host ticks, the onset of nymphal feeding acts as an immune booster in a host already primed by the larval feed and that this results in a reduced feeding performance. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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